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Table of Contents

Frame Relay Connections

Frame Relay Connections



The frame relay commands let you add, configure, delete, and specify statistical reporting for frame relay connections. In addition to describing the commands, this chapter tells you how to:

The frame relay commands in this chapter operate on an FRP/FRI card set in an IPX or an FRM/FRI or UFM/UFI card set in an IGX. For the frame relay commands that operate on an FRSM in an AXIS shelf (connected to a BPX), refer to the AXIS Command Supplement. For the frame relay commands that operate on the FastPADs and supporting service cards, refer to the FastPAD manuals.

For a greater number of lower-speed connections, the Port Concentrator Shelf (PCS) is available. The PCS is an external device that requires an FRM-2/FRI-2 card set in the IGX or an FRC-2/FRI-2 in an IPX. The node automatically recognizes an FRM-2 or FRC-2 and accepts commands for the PCS.


Note A connection is the same as a PVC (permanent virtual circuit).

Physical and Logical Frame Relay Ports

This section describes the command-related issues for physical and logical frame relay ports.

In the IPX and IGX, the frame relay-only cards are the FRP, FRM and UFM card sets. (The FTM supports frame relay, voice, and serial data but is not described in this manual.) In the FRP and FRM, both physical and logical ports can exist. The UFM has logical ports and physical lines.

Physical and Logical Ports on an FRM

In the FRP and FRM card sets, a logical port is a convention that applies to a T1 or E1 back card. In contrast, the ports on an X.21 or V.35 back card are physical. The reason that T1 and E1 ports on an FRP or FRM card set are logical is that these ports utilize one, bi-directional connector. To support the range of possible PVCs, the traffic passes through a de-multiplexer on a T1 or E1 FRI. Therefore, although only one connector exists on the card, the frame relay commands accept port numbers 1-24 (T1) or 1-31 (E1). When a frame relay command takes the parameter slot.port, the port in this case is logical, and the node tracks it accordingly.


Note Keep in mind the distinction between a logical port and a logical channel: a logical channel is one or more DS0s.

Logical Ports and Physical Lines on a UFM

On the UFI back cards, the presence of multiple physical lines adds a parameter to the connection identifier. When you identify a UFM channel, use the format slot.port line.DS0_range. Due to the architecture of the software, port is a logical specification, and line is a physical specification. The range of logical ports is 1-250. The number of physical lines (hardware connectors) on the UFI-8T1 and UFI-8E1 is 8 (regardless of whether the front card is a UFM-4C or UFM-8C). The range of DS0s is 1-24 for T1 and 1-31 for E1. For X.21 back cards, the range of lines is 1-10. The range for HSSI lines is 1-4.

Setting Up a Frame Relay Connection

Frame relay connections can exist between the following cards:

An IPX or IGX provides a Permanent Virtual Circuit (PVC) Frame Relay Service for interconnecting user-devices (routers, bridges, and packet switches). The PVCs are internally created on the node and rely on FastPacket switching. The user-device connects to the frame relay back card in the node. The back card provides the adaptation layer function to convert between the frame relay format and the FastPacket format.

In addition to the interface cards listed just listed, frame relay connections require a trunk card. Trunk cards can be the NTC or AIT in an IPX or an NTM, BTM, or ALM/B in an IGX. Because frame relay is a purchased option, StrataCom must enable it on each StrataCom node intended to carry frame relay traffic.

A variety of external user-devices can operate with an IPX or IGX. The configuration on these devices must be appropriate for the type of interface on the back card.

The following is the sequence of commands for bringing up a frame relay port and adding a frame relay connection.

Step 1 Activate a frame relay port with the upfrport command.

Step 2 Use cnffrport to specify the frame relay parameters for the frame relay service.

An optional command may be applicable to a Port Concentrator Shelf (PCS): you can use cnffrcport to configure the concentrated link between the PCS and frame relay cards.

Step 3 Use the dspcls command to view the existing frame relay classes. Decide on a class if a suitable class exists, otherwise create a suitable class using the cnffrcls command. Use the class number in the addcon command.

Step 4 Use the vt command to access the node at the remote end of the proposed frame relay connection, then use the upfrport and cnffrport commands as in steps 1 and 2.

Step 5 Use the addcon command on the local node to add the frame relay connection.

Setting Up a Frame Relay Connection Group

A frame relay group is a routing entity in which you can include up to 16 individual frame relay connections (or virtual circuits). Subsequently, the network can route the connections as a group.


  1. Use the addcongrp command to set up a frame relay connection group. For example, if you want a connection group between local node "alpha" and remote node "beta," enter:

    addcongrp beta.1


    The group name consists of the remote node name and a group number. The "1" is the number of the group between alpha and beta. The network establishes the connection group with the group name "beta.1" on node alpha. On node beta, the group name is "alpha.1." You can specify any unused group number in the range 1-255. If you do not specify the group number, the system assigns the next higher, unused number.


    After you finish addcongrp, the group exists but does not yet contain any frame relay circuits.



  2. Initially, a group is empty. Use the grpcon command to assign up to a maximum of 16 frame relay connections to a group. The connections you include in the group must be inter-node, non-bundled, frame relay connections that already exist (through addcon). For example, to assign the connection 8.1.101 to the beta.1 connection group, enter:

    grpcon beta.1 8.1.101


    After you have assigned the group members, you can modify the routing parameters of the whole group (all the individual circuits in the group) by using the group name (remote nodename.group number) in the cnfcos, upcon, dncon, cnfpref, dsprts, and dspcons commands. For individual connections in the group, you can specify non-connection parameters such as the fail state, loop state, and configuration. Other frame relay connection group commands are:


    • dspcongrp, which displays the details of a connection group.

    • dspcongrps, which displays all connection groups at the node.

    • delcongrp, which deletes a connection group. Before deleting a group, you must empty the connection group by using the delcon command.

Using Frame Relay Classes

For each frame relay connection you add, you must specify a frame relay class. A frame relay class is a set of parameters that specify the bandwidth and congestion-prevention characteristics for a connection. StrataCom provides 10 predefined classes, but you can modify any of the 10 frame relay classes with cnffrcls. To see the parameters in all connection classes, execute dspfrcls. A frame relay class is relevant only at the time you add a connection with addcon. Once the connection exists, the system uses the parameters but does not keep track of the class number.

Apart from using the cnffrcls command, you can change one or more frame relay parameters with the addcon command. When you add a frame relay connection with addcon, a prompt appears requesting a frame relay class. At this prompt you can do one of the following:

If you are overriding class parameters, the asterisk causes the connection to use the existing value of the parameter in that class. Most parameters are bi-directional and have the format parameter/parameter. If you want to keep a value for both directions, enter a single *. If you want to change a value for only one direction, enter the parameter in the form */new_parameter or new_parameter/*. When you type individual parameters, you need to enter characters only up to the last changed item. Before the last item, you must enter new values or * as a place holder.

The parameters in the list that follows make up a frame relay class. Collectively, the name of these parameters is frp_bw. For most parameters, you can specify the value for each direction of the connection, so most parameter names appear in the format parameter/parameter. ForeSight (FST) is the exception because ForeSight automatically applies to both directions.

The full range of values for frame relay cards is 0-2048 Kbps. Note that a CIR of 0 is not a standard setting. The standard range is 2.4 Kbps-2048 Kbps. CIR = 0 is a valid parameter only if the connection terminates at both ends on either a UFM, FRM or FRP. Before you can specify CIR = 0 with either addcon or cnffrcls, you must enable IDE-to-DE mapping with the cnffrport command. If you do not first enable IDE-to-DE mapping, the range for CIR is 2.4 Kbps - 2048 Kbps. Additionally, the CIR = 0 specification is necessary at only one end of the connection.
The Port Concentrator Shelf does not support CIR = 0. On the FRP-2 and FRM-2 cards sets, the range for CIR is 2.4 Kbps-2048 Kbps.
OR
Bc/Bc is defined as fr_Bc_Tx /fr_Bc_Rx. If you have selected Frame Relay Forum standard parameters (through the cnfsysparm command), the Committed Burst (Bc) parameter is used instead off vc_q. Bc is defined as the amount of data the network can accept over a variable time interval Tc for committed delivery on a specific PVC. Specify Bc in bytes in the range 1-65535. Bc has meaning for only FST connections. The relationship between Bc and VC_Q is:
Bc = VC_Q / ((1 - (CIR/port speed))
OR
Be/Be is defined as fr_Be_Tx /fr_Be_Rx. If you have selected Frame Relay Forum standard parameters (through the cnfsysparm command), the PVC uses Excess Burst (Be) instead of PIR. Be is the amount of transmit/receive data above the number of bytes set by Bc if enough extra bandwidth is available. Specify Be in bytes within the range 1-65535. Delivery of Be-data is not guaranteed. Be has meaning to only ForeSight. The relationship between Be and PIR is:
Be = Bc * ((PIR/CIR) - 1)

Using Interface Control Templates

X.21 ports use a fixed, active control template. In contrast, although V.35 and V.28 ports use an active control template, you can set the signals that are active to on or off. These ports cannot use looped, conditioned, near, or far.

Configuring Channel Utilization

You can use the cnfchutl command to enter the expected channel utilization of a frame relay circuit into the system. This command helps the system allocate the proper bandwidth to the circuit.

Setting Channel Priorities

A frame relay connection has either low or high priority. The default is low priority. You can use cnfchpri to assign a high priority to a circuit or to re-assign a high priority circuit to low priority.

Displaying Statistics

Nodes collect statistics for frame relay traffic, channel utilization, and Explicit Congestion Notification. Use dspchstats to display these statistics. Use clrchstats to clear the statistics and start collecting new statistics. To display frame relay usage and error statistics, use dspportstats.

Summary of Commands

This table lists the full name and starting page of the description for each frame relay command.

Mnemonic Name Page
addcon Add connection 9-7
addcongrp Add connection group 9-16
addfrport Add frame relay port 9-18
cnfchpri Configure channel priority 9-21
cnfcondsc Configure connection descriptor 9-23
cnffrcls Configure frame relay class 9-25
cnffrcon Configure frame relay connection 9-28
cnffrcport Configure frame relay port on a Port Concentrator Shelf 9-31
cnffrport Configure frame relay port 9-33
cnfict Configure interface control template 9-43
cpyict Copy interface control template 9-48
delcon Delete connection 9-51
delcongrp Delete connection group 9-53
delfrport Delete frame relay port 9-55
dnfrport Down frame relay port 9-57
dspchcnf Display channel configuration 9-59
dspchstats Display channel statistics 9-61
dspcon Display connection 9-64
dspcongrp Display connection group 9-66
dspcongrps Display connection groups 9-68
dspcons Display connections 9-70
dspfrcls Display frame relay class 9-78
dspfrport Display frame relay port 9-80
dspict Display interface control template 9-87
dspportids Display port IDs 9-93
dspportstats Display port statistics 9-95
grpcon Group connections 9-100
prtchcnf Print channel configuration 9-103
prtcongrps Print connection groups 9-104
prtcons Print connections 9-105
prtict Print interface control template 9-107
upfrport Up frame relay port 9-108

addcon

Adds a frame relay connection to the network. After you add a connection, the system automatically routes the connection. The node on which you execute addcon is the owner of the connection. The concept of ownership is important because you must specify automatic rerouting and preferred routing information at the node that owns the connection. See the cnfpref and cnfcos descriptions for information on automatic rerouting. Before it actually adds the connection, the system displays the parameters you have specified and a prompt for confirmation.


Note For cards with Y-cable redundancy specified, you can add connections to only primary cards.

Each frame relay connection (and associated user-device) is locally identified by a unique DLCI. (No two connections in a node can have the same DLCI.) The total DLCI range is 1-1023. DLCIs 16-1007 typically are available for local and remote channels. DLCIs 1-15 and 1008-1022 are reserved by ANSI standards. DLCI 1023 is reserved for LMI.

Only a UFM could come close to using all DLCIs. The maximum number of connections on a UFM is 1000. The maximum number of frame relay connections on an FRC or FRM is 252.

If a user-device can automatically determine the network configuration by using the LMI, you do not need to specify the DLCIs in the network to the device. If a device cannot interrogate the network to determine the DLCIs in the network, you must specify the network DLCIs to the user-device.

As the following sections describe, four types of frame relay connections exist.

Normal Connections

A normal connection is a single PVC where each endpoint is defined by slot.port.DLCI. For example:

addcon 4.2.200 alpha 6.1.300 2

defines a connection from the local node slot 4, logical port 2, and a DLCI of 200 to node alpha, slot 6, port1 and a DLCI of 300. The last argument "2" is the frame relay class (see "Using Frame Relay Classes " for details).

Bundled Connections

Connection bundling creates a full mesh of connections between two groups of frame relay ports with a single execution of the addcon command. When you add a bundle between two groups of ports, you create a connection between each port of one group of ports and each port of the other group of ports. Each group of frame relay ports can include up to four ports. Consequently, the maximum number of connections in a bundle is 16 (resulting from a full mesh of connections between two groups of four ports each). Note that a Port Concentrator Shelf does not support bundling. Characteristics of connection bundling are:

When you create a connection bundle is created with addcon, you do not explicitly specify the required DLCI at each endpoint of each connection. Instead, the DLCIs are automatically assigned using global addressing with the Port IDs, which have been previously assigned to the ports. Consequently, you must first assign a Port ID (other than 0) to every port to which you plan to assign a connection bundle. Use cnffrport to assign a Port ID or dspport to see an existing Port ID.

For example, the command

addcon 6.1x3 alpha 7.2x3 1

defines a single connection bundle between a local group of 3 ports (ports 1, 2, and 3 on card 6) and a remote group of 2 ports (ports 2 and 3 on card 7). The resulting connection bundle consists of the following six connections:

local node slot 6.port 1 to node alpha slot 7.port 2

local node slot 6.port 1 to node alpha slot 7.port 3

local node slot 6.port 2 to node alpha slot 7.port 2

local node slot 6.port 2 to node alpha slot 7.port 3

local node slot 6.port 3 to node alpha slot 7.port 2

local node slot 6.port 3 to node alpha slot 7.port 3

Each connection in the bundle is assigned the parameters of the same frame relay class (class 1, in the example above). Notice that no DLCIs were specified for the six connections. The DLCIs are automatically assigned using the Port IDs of the ports.

As an example, assume that the following Port IDs had been previously assigned for the five ports.

port 6.1 Port ID = 22

port 6.1 Port ID = 534

port 6.3 Port ID = 487

port 7.2 Port ID = 92

port 7.3 Port ID = 796

As a result of the addcon command, the six connections that you create are automatically assigned DLCIs using global addressing as follows.

6.1.92 - 7.2.22

6.1.796 - 7.3.22

6.2.92 - 7.2.534

6.2.796 - 7.3.534

6.3.92 - 7.2.487

6.3.796 - 7.3.487

The dspcons display shows the entire bundle as a single item. Therefore, you cannot see the automatically assigned DLCIs on the dspcons screen. (The automatically assigned DLCIs in the preceding list appear in italics.) To see the DLCIs, use dspcon, as in the following example:

dspcon 6.1x3 alpha 7.2x3

The preceding shows one screen for the whole bundle then an additional screen for each connection in the bundle. The assigned DLCIs appear in these individual connection display screens.

Grouped Connections

A frame relay connection you assign to a group is a grouped connection. A group can consist of up to 16 connections. Grouping involves three commands: addcon, addcongrp, and grpcon. First, before you can assign connections to a group, they must already exist as normal frame relay connections (through addcon). Next, define a connection group for the node using the addcongrp command. Lastly, add each connection to the group using the grpcon command. Refer to the descriptions of addcongrp and grpcon for more details.

Frame Forwarding Connections

A non-frame relay data connection (such as HDLC or SDLC) that is routed through frame relay cards can bypass a router or take advantage of DFM at higher data rates. The format slot.port.* identifies a frame forwarding connection. An example is:

addcon 11.2.* alpha 12.3.* 2

The "*" indicates to the node that a DLCI is meaningless.

Full Name

Add connection

Syntax

addcon [route_avoid]

If you request help for addcon at the command line prompt, the Help line shows type as a parameter. When you are using addcon for a frame relay connection, type is actually the frame relay class described earlier in this chapter in the section titled "Using Frame Relay Classes ." As stated in "Using Frame Relay Classes ," you can optionally change the parameters on the command line. Optionally, you can override any or all of the parameters in the frame relay class by specifying the parameters that appear as frp_bw and avoid in the Help display. See the forthcoming "Optional Parameters" table. Note also that you do not enter the coding parameter shown on the Help line.

Related Commands

delcon, dncon, dspcon, dspcons, upcon

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1 (local addressing)

addcon 6.1.100 beta 6.2.200 3

addcon 6.1 101 delta 4.1.102 2

addcon 4.1.100 beta 6.2.101 4

addcon 4.1.200 gamma 5.1.300 1

Description

Execute the preceding commands at node Alpha to configure the following network.

Example 2a

addcon 9.1.200 gamma 8.1.300 1

Description

Add a connection between the user-device at alpha port 9.1 and the user-device at gamma port 8.1. The user-device at alpha refers to the connection using local DLCI 200. The user-device at gamma refers to this connection using local DLCI 300. The DLCIs have only local significance, so a DLCI must apply to only one connection.

System Response
alpha          TRM   YourID:1        IPX 16    8.2    Mar. 23 1996 10:12 PST 
                                                                                
Local 		Remote	Remote		Route       
Channel		NodeName 	Channel 	State 	Type			C	Compression		Code	Avoid	COS	O 
 5.1		beta		25.1		Ok		256	7/8			0	L 
 9.1.100		gamma	8.1.200	Ok	fr				0	L 
 9.1.200		gamma	8.1.300	Ok	fr 				0	L 
 9.2.400		beta	19.2.302	Ok	fr 				0	L 
 14.1		gamma	15.1	 Ok	v				0	L 
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
Last Command: addcon 9.1.200 gamma 8.1.300 1                                    
                                                                                
Next Command: 
Example 2b

addcon 9.1.100 beta 6.2.300 2

Description

Add another connection at local port 9.1. A DLCI of 100 is used at the local node. A DLCI of 300 can be used at both beta gamma because the DLCIs have only local significance.

Example 3(global addressing)

addcon 6.1.80 beta 9.2.79 2
addcon 6.1.81 gamma 4.1.79 1
addcon 4.1.80 beta 6.2.81 5

Description

The network to configure in this example is as the follows:

Example 4 (bundle connections)

addcon 8.1x3 alpha 19.2x4 1

Description

Add a bundle of connections between frame relay ports 8.1-3 on node gamma and 19.2-4 on node alpha. For this bundle, the network routes traffic between gamma port 8.2 and alpha port 19.2.

System Response
pubsipx3       VT    StrataCom       IPX 8     8.2.00    Jan. 3 1997  19:41 GMT
 Local          Remote      Remote
 Channel        NodeName    Channel         State  Type      Compress  Code COS
	8.1x3	 alpha	 19.2x4	Ok	fr
This Command: addcon 8.1x3 alpha 19.2x4 1
Add these connections (y/n)?
Example 5 (frame forwarding)

addcon 8.2.* alpha 19.2.* 1

Description

Add a frame forwarding connection between the local node's port 8.2 and 19.2 on node alpha.

System Response
Local		Remote	Remote 					Route       
Channel		NodeName	Channel	State	Type	Compression	Code	Avoid	COS	O 
6.1		beta 	25.2	Ok	256	 7/8			0	R 
8.1.200 		alpha 	9.1.100	Ok	fr				0	R 
8.2.300		beta 	19.1.101	Ok	fr				0	R 
15.1		alpha	14.1	Ok	v 				0 	R 
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
This Command: addcon 8.2.* alpha 19.2.* 1                                        
                                                                                
                                                                                
Add these connections (y/n)?      
Example 6 (modifying bandwidth)

addcon 8.3.101 beta 19.3.201 7 * * * * 30/30 * * Y 80/80

Description

Parameters specified by frame relay class 7 for this connection are modified by substituting 30 for Cmax in both directions, enabling ForeSight, and reducing percent utilization from 100% to 80%.

System Response
gamma          TRM   YourID:1        IPX 16    8.2   Mar. 23 1996 12:10 CST 
                                                                               
 Local      Remote      Remote                                     Route       
 Channel    NodeName    Channel    State  Type   Compression  Code Avoid COS O 
 6.1        beta        25.2        Ok     256                 7/8         0  R 
 8.1.200    alpha       9.1.100     Ok     fr                              0  R 
 8.2.300    beta        19.1.101    Ok     fr                              0  R 
 15.1       alpha       14.1        Ok     v                               0  R 
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
Last Command: dspcons                           
                                                                                
Next Command: addcon 8.3.101 beta 19.3.201 7 * * * * 30/30 * * Y 80/80

Table  9-1: addcon-Parameters

Parameter

Description

local channel Specifies the local channel to connect in the format:

slot.port.DLCI | x port | .*

On an FRP or FRM, the range for port is 1-24 or 1-31. On a UFM, the range for port is 1-250. (For connections on a UFM, line is not necessary because of the mapping of port to line through addfrport). The range for DLCIs is 16-1007.

node Specifies the name of the remote node at the other end of the connection.
remote channel Specifies the frame relay channel at the other end of the connection in the
following format:

slot.port.DLCI | x port | .*

frame relay class Specifies a frame relay class. Entering a frame relay class is a shortcut for specifying bandwidth parameters. You must enter a frame relay class, but then you can modify any of the bandwidth parameters specified by the class. To do so, do not press Return after you type the class number but continue typing either a value for the parameter or a * to keep the current value. The system does not display the parameters, but the description of the frp_bw parameters in the"Optional Parameters" table that follows shows the order and ranges of the parameters you can specify. The node comes with 10 predefined frame relay classes. You can view the parameters in a frame relay class by using the dspcls command and modify a class with cnffrcls. For more details on the parameters and the frame relay classes, refer to "Using Frame Relay Classes " earlier in this chapter.

Table  9-2: addcon-Optional Parameters
Parameter Description
frp_bw Optionally specifies individual bandwidth parameters. The parameter name "frp_bw" is the label for the bandwidth parameters described here. The slash (/) between the repeated parameter name shows that you can specify a value for each direction. (FST is the exception.)Two parameters can be either the (default) StrataCom versions or the Frame Relay Forum standard parameters. To switch between StrataCom and Frame Relay Forum, use the cnfsysparm command. Note that all parameters you select with cnfsysparm are network-wide and not confined to the current connection addition. The switchable parameters are as follows:

StrataCom Parameters Standard Parameters

PIR (peak information rate) Be (excess burst)

VC_Q (VC queue depth) Bc (committed burst)

When you are using the StrataCom parameter set, the names and order of specification are as follows:

MIR/MIR, CIR/CIR, VC_Q/VC_Q, PIR/PIR, Cmax/Cmax ECNQ_thresh/ECNQ_thresh, QIR/QIR, FST, %utl/%utl

When you are using the parameters with the two Frame Relay Forum versions, the names and order of specification are as follows:

MIR/MIR, CIR/CIR, Bc/Bc, Be/Be, Cmax/Cmax, ECNQ_thresh/ECNQ_thresh, QIR/QIR, FST, %utl/%utl

For the definition of each parameter and important information on setting CIR=0, refer to the section titled "Using Frame Relay Classes " earlier in this chapter.

avoid Specifies the type of trunk or route to avoid for the connection. The default is no avoidance. To specify an avoid value, type it after the frame relay class or -- if you override the frame relay class -- after the frp_bw values. Be sure to include the asterisk (*). The avoid parameters are:

*s Avoid satellite trunks.

*t Avoid terrestrial trunks.

*z Avoid trunks using zero-code suppression techniques that modify any bit
position to prevent long strings of zeros.

addcongrp

Defines a frame relay connection group between the local node and the specified remote node. The resulting connection group is a routing entity that is initially empty and into which individual connections (virtual circuits) may be added using the grpcon command. Connections added to a group must be of the inter-node, non-bundled, frame relay type. The connections must have the same routing parameters, such as owner, class of service (COS), routing state, route restrictions, and ForeSight enable status.

Connection grouping permits a node to have up to 1000 frame relay connections. A connection group can have up to 16 connections. Up to 250 connection groups can exist at a node. The addcongrp parameters, remote node name, followed by the period ("."), followed by the group number, combine to provide a unique connection group name. If the remote node name only is entered in the command, the system automatically generates the period (".") and the group number. For group number, the system uses the next unused number between the two nodes. An example of a connection group name between the alpha and beta nodes is:

beta.1

at alpha

alpha.1 at beta

If a second group is created between alpha and beta with the addcongrp command but with no specified group number, the automatically generated group names for the second group would be:

beta.2 at alpha
alpha.2 at beta
Full Name

Add connection group

Syntax

addcongrp [.group number]

Related Commands

delcongrp, grpcon, delcon, dspcongrps, dspcons, dspcongrp

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

addcongrp gamma

Description

Add a connection group gamma. If you enter only the remote node name, the system automatically generates a group number.

System Response
beta           TRM   YourID:1        IPX 32    8.2    Mar. 15 1996 15:49 MST 
                                                                                
Only to                        Route                                            
gamma            Count  State  Avoid  COS  FST  Owner                           
gamma.1          0                              Local                           
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
Last Command: addcongrp gamma                                                   
                                                                                
                                                                                
Next Command:

Table  9-3: addcongrp-Parameters
Parameter Description
remote node Uses the name of the remote node as the name of the group.

Table  9-4: addcongrp-Optional Parameters
Parameter Description
group number Specifies the number of a group. The range of group numbers is 1-250. A period separates the name of the remote node and the group number.

addfrport

Activates a logical frame relay port on either an FRP, FRM, or UFM card set. The addfrport command applies to a T1 or E1 line. It does not apply to an FRM with a V.11 or V.35 back card or to a Port Concentrator Shelf.

The addfrport command adds a logical frame relay port by using the slot number of the FRM or and the DS0/timeslots that make up the logical port. On a UFM, the logical ports span the whole range of physical lines: you associate the logical ports to the lines as needed, then include the DS0s as the last field of the argument. Table 9-5 lists the error and warning messages for this command.


Table  9-5:
Messages Reason for Message
"Slot is out of range" Line number not correct for T1/E1.
"Line must first be upped" Line is down.
"invalid channel range" Channel is out of range 1-24 or 1-31 (no 16 for E1).
"Channel is busy" Channel is already assigned to a logical por.t
"You cannot use signalling channel 16" (E1) CAS channel 16 included in logical port (E1). CCS permits the use of channel 16 but not in all countries.
"Invalid rate" Entered rate is not 56 Kbps or 64 Kbps.
"This rate is available for single channel only" Entered rate is 56 Kbps, but multiple channels specified.
Full Name

Add Frame Relay port T1/E1

Syntax

For FRP or FRM card sets: addfrport [DS0 channel] [56 | 64]

For UFM card sets: addfrport

Related Commands

upcln, delfrport, cnffrcport, cnffrport, dspfrport

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

addfrport 21.9 -15

Description

Add a single frame relay port that occupies DS0s (timeslots) in the range 9-15. For a T1 line, this channel rate is 7 x 64 Kbps = 448 Kbps, as the screen example shows. The card is an FRP.

System Response
gamma          TRM   YourID:1        IPX 16    8.2    Mar. 15 1996 17:28 CST 
                                                                                
Port configuration for FRP 21
From	Chan	Speed	Interface	State
1	9-15	448	FRI T1	INACTIVE
                                                                                
                                                                                
Last Command: addfrport 21.9-15
                                                                                
                                                                                
Next Command: 

Table  9-6: addfrport-Parameters
Parameter Description
slot.port (for FRP or FRM series)

slot.port line.DS0 channel (for UFM series)

Specifies the FRI T1 or E1 line number and the logical port number. For example, 8.14 is physical slot 8 and timeslot (or channel) 14.

For the UFM card sets, this parameter specifies the slot and logical port, the physical line (the connector), and one or more contiguous DS0s. The range of logical ports is 1-250. The range of lines is 1-4 for the UFM-4C and 1-8 for the UFM-8C. Note the space between the port and line.


Table  9-7: addfrport-Optional Parameters
Parameter Description
- chan Specifies that multiple DS0/timeslots should form one logical port. A "-" separates the starting and ending DS0s/timeslots). Timeslots must be contiguous. An example is addfrport 8.1-5. The system uses the lowest DS0/timeslot number as the logical port number and shows this in related displays.
rate Specifies the rate of a single, logical port. By default, a single logical port (or channel) is 64Kbps. A single DS0 (timeslot) may be 56 Kbps or 64 Kbps. If you do not enter a rate, it is 64 Kbps. For example, addfrport 8.14 56 specifies a rate of 56 Kbps for 8.14.

clrfrcportstats

Clears port statistics for FRM-2 or FRP-2 physical ports connected to a Port Concentrator Shelf. To see the statistics that you clear with clrfrcportstats, execute dspfrcportstats. The controller card collects statistics from the FRM-2 or FRP-2 once per minute. Because clrfrcportstats clears statistics on the controller card, it may not clear statistics generated within the last minute.

Full Name

Clear FRC/FRM port statistics

Syntax

clrfrcportstats

Related Commands

dspfrcportstats

Attributes
Privilege 1-5
Jobs Yes
Log Yes
Node IPX, IGX
Lock No

Table  9-8: clrfrcportstats-Parameters
Parameter Description
slot,port | * Slot and port of the physical port. The range for port is 1-4. An asterisk (*) specifies all FRC-2/FRM-2 physical ports.

cnfchpri

Sets the channel priority for a frame relay connection. The Channel Priority feature permits some frame relay connections to receive a higher priority within a port queue than other frame relay traffic on a per-connection basis. The default priority is low. You can configure frame relay LMI ports to communicate the priority to a router. You must change the priority on both ends of a connection.

Full Name

Configure frame relay channel priority

Syntax

cnfchpri

Related Commands

dspchcnf

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

cnfchpri 9.1.100 h

Description

Configure a high priority for frame relay connection 9.1.100.

System Response
alpha          TRM   YourID:1        IPX 16    8.2    Mar. 15 1996 16:00 PST 
                                                                                
Conn:  9.1.100    gamma       8.1.200     fr                                    
   MIR       CIR    VC Q Depth      PIR      Cmax   ECN QThresh    QIR    FST   
 9.6/9.6   9.6/9.6      5/5       256/256    10/10  65535/65535  9.6/9.6   n    
% Util: 100/100                                                                 
Owner: LOCAL  Restriction: NONE  COS: 0                     Status: OK          
Group: NONE  Priority: H  TestRTD: 0 msec                                       
                                                                                
Path:     alpha   14--13beta    15--15gamma                                     
Pref:     Not Configured                                                        
                                                                                
                                                                                
alpha 9.1.100                                    gamma 8.1.200                  
FRP:   OK                                        FRP:   OK                      
FRI:   OK                                        FRI:   OK                      
                                                                                
                                                                                
Last Command: cnfchpri 9.1.100 h                                                
                                                                                
                                                                                
Next Command:                

Table  9-9: cnfchpri-Parameters
Parameter Description
channels Specifies the channel or range of channels. The format is slot.port.DLCI.
h | l The priority: h = high; l = low.

cnfcondsc

Assigns a user-specified, reference description to a connection. The connection descriptor is independently configurable at each end of a connection. To remove a descriptor, enter this command and specify a null descriptor. A descriptor cannot be deleted in a job, just reconfigured. The dspcon and dspcons +d commands display any existing connection descriptors.

Full Name

Configure connection description

Syntax

cnfcondsc

Related Commands

dspcon, dspcons

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

cnfcondsc 5.1 gracie's_fax

Description

Give a descriptive name to channel 5.1. In this example, the name "gracie's_fax" is given to the connection 5.1. If a descriptor is desired for the other end of the connection, the user can "vt" to the other end of the connection and use the cnfcondsc command on that connection. The same name can be assigned or a different name.

System Response
alpha          TRM   YourID:1        IPX 16    8.2     Mar. 15 1996 15:40 PST 
                                                                                
Conn:  5.1        beta        25.1        256 7/8    Desc: gracie's_FAX 
                                                                                
                                                                                
                                                                                
Owner: REMOTE  Restriction: NONE  COS: 0                    Status: OK          
Compression: NONE                                                               
                                                                                
Path:     alpha   10-- 7beta                                                    
Pref:     Not Configured                                                        
                                                                                
                                                                                
alpha 5.1                                        beta 25.1                      
SDP:   OK                                        SDP:   OK                      
SDI:   OK                                        SDI:   OK                      
Clock: OK                                        Clock: OK                      
                                                                                
Last Command: cnfcondsc 5.1 gracie's_fax                                      
                                                                                
                                                                                
Next Command:    

Table  9-10: cnfcondsc-Parameters
Parameter Description
channel Specifies the local voice, data, frame relay, or ATM channel to describe.
descriptor Specifies a string of up to 20 displayable characters. The descriptor cannot begin with a number, and no spaces are allowed.

cnffrcls

Configures a system-wide frame relay connection class. Refer to the section titled "Using Frame Relay Classes " at the beginning of this chapter for a definition of a frame relay class. The following are characteristics of this command:

Full Name

Configure Frame Relay class

Syntax

cnffrcls [] []

Related Commands

addcon, dspfrcls

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

cnffrcls 1 *

Description

Configure frame relay class #1 to operate with ForeSight. The list of * parameters leaves those parameters unchanged, and "y" enables ForeSight. Because the utilization and description parameters are not entered, any existing values for these parameters remain in effect.

System Response
alpha          TRM   YourID:1        IPX 16    8.2    Mar. 15 1996 16:05 PST 
                                                                                
                        Frame Relay Connection Classes                          
                                                                                
 #    MIR       CIR    VC Q Depth      PIR      Cmax   ECN QThresh    QIR   FST 
.6/9.6   9.6/9.6  65535/65535    128/128  10/10  65535/65535  9.6/9.6  y  
   % Util: 100/100 Description: "Default 9.6"                                   
 2 19.2/19.2 19.2/19.2 65535/65535     */*      10/10  65535/65535 19.2/19.2 n  
   % Util: 100/100 Description: "Default 19.2"                                  
 3   16/16     16/16   65535/65535     */*      10/10  65535/65535   16/16   n  
   % Util: 100/100 Description: "Default 16"                                    
 4   32/32     32/32   65535/65535     */*      10/10  65535/65535   32/32   n  
   % Util: 100/100 Description: "Default 32"                                    
 5   56/56     56/56   65535/65535     */*      10/10  65535/65535   56/56   n  
   % Util: 100/100 Description: "Default 56"                                    
                                                                                
                                                                                
                                                                                
Last Command: cnffrcls 1 * * * * * * * y                                                     
   
                                                                             
Continue (y): y                                                                                
System Response (continued)
alpha          TRM   YourID:1        IPX 16    8.2    Mar. 15 1996 16:03 PST 
                                                                                
                        Frame Relay Connection Classes                          
                                                                                
 #    MIR       CIR    VC Q Depth      PIR      Cmax   ECN QThresh    QIR   FST 
 6   64/64     64/64   65535/65535     */*      10/10  65535/65535   64/64   n  
   % Util: 100/100 Description: "Default 64"                                    
 7  128/128   128/128  65535/65535     */*      10/10  65535/65535  128/128  n  
   % Util: 100/100 Description: "Default 128"                                   
 8  192/192   192/192  65535/65535     */*      10/10  65535/65535  192/192  n  
   % Util: 100/100 Description: "Default 192"                                   
 9  256/256   256/256  65535/65535     */*      10/10  65535/65535  256/256  n  
   % Util: 100/100 Description: "Default 256"                                   
10  512/512   512/512  65535/65535     */*      10/10  65535/65535  512/512  n  
   % Util: 100/100 Description: "Default 512"                                   
                                                                                
                                                                                
                                                                                
Last Command: cnffrcls 1 * * * * * * * y                                                         
                                                                                
                                                                                
Next Command:   

Table  9-11: cnffrcls-Parameters
Parameter Description
class number Specifies the connection class to configure. The range is 1-10.

Table  9-12: cnffrcls-Optional Parameters
Parameter Description
frp_bw Optionally specifies individual bandwidth parameters. The parameter name "frp_bw" is the label for the bandwidth parameters described here. The slash (/) between the repeated parameter name shows that you can specify a value for each direction. (FST is the exception.)Two parameters can be either the (default) StrataCom versions or the Frame Relay Forum standard parameters. To switch between StrataCom and Frame Relay Forum, use the cnfsysparm command. Note that all parameters you select with cnfsysparm are network-wide and not confined to the current connection addition. The switchable parameters are as follows:

StrataCom Parameters Standard Parameters

PIR (peak information rate) Be (excess burst)

VC_Q (VC queue depth) Bc (committed burst)

When you are using the StrataCom parameter set, the names and order of specification are as follows:

MIR/MIR, CIR/CIR, VC_Q/VC_Q, PIR/PIR, Cmax/Cmax ECNQ_thresh/ECNQ_thresh, QIR/QIR, FST, %utl/%utl

When you are using the parameters with the two Frame Relay Forum versions, the names and order of specification are as follows:

MIR/MIR, CIR/CIR, Bc/Bc, Be/Be, Cmax/Cmax, ECNQ_thresh/ECNQ_thresh, QIR/QIR, FST, %utl/%utl

For the definition of each parameter and important information on setting CIR=0, refer to the section titled "Using Frame Relay Classes " earlier in this chapter.

description Any text string up to 25 characters terminated by a . This is used to provide the user with a descriptive identifier for the class.

cnffrcon

Configures frame relay bandwidth parameters or enables ForeSight for an individual connection. Be sure the MIR you specify is appropriate. If it is too high, bandwidth is wasted. If it is too low, the connection may drop data. The statistics reports are the best source of information to help you decide what the MIR should be.

The PIR usually is set to the port speed. You can specify a lower PIR if other constraints on the data generation rate exist. Be sure the PIR you specify is appropriate. If it is too low, frames are dropped. If it is too high, bandwidth may be wasted unless the network has ForeSight.

The Cmax, VC Q, and ECN Q values should be changed by only knowledgeable users and when tuning data is available to support the determination of appropriate values. These values affect system buffering resources, so any change from the defaults requires caution. Refer to the Release 8.2 System Manual for more details on connection parameters.

If the connection type has ForeSight (FST = y), the result of the last test round trip delay command (Test RTD) is displayed. Note that this is not the current RTD but the result of the last, user-specified test. High or low connection priority is displayed for both standard frame relay connections and ForeSight connections.

The node checks the bandwidth parameters to promote efficient use of network bandwidth. The following messages reflect the checks on bandwidth usage.

Error Min cannot exceed peak.
Warning Min exceeds this port's speed.
Warning Sum of mins exceeds port's speed.
Warning Peak exceeds this port's speed.

Warning messages are informational and do not indicate that the command is failing to execute. Error messages indicate the command is not executing.

When you specify the frp_bw parameters, enter all changes (or unchanged values indicated by an asterisk) on the line. You must specify either a change or a place-holder (*) up to at least the last changed value (after which place-holders are unnecessary). Decide on any changes before starting this command. The parameters section of this command description lists frp_bw parameters. The section "Using Frame Relay Classes " at the beginning of this chapter describes the parameters.

Full Name

Configure Frame Relay Connection

Syntax

cnffrcon [parameters]

Related Commands

addcon, dspcon

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

cnffrcon 8.1.200

Description

Configure frame relay port 8.1.200.

System Response
gamma          TRM   YourID:1        IPX 16    8.2    Mar. 15 1996 17:28 CST 
                                                                                
Conn:  8.1.200    alpha       9.1.100     fr                                    
   MIR       CIR    VC Q Depth      PIR      Cmax   ECN QThresh    QIR    FST   
 9.6/9.6   9.6/9.6      5/5       256/256    10/10  65535/65535  9.6/9.6   n    
% Util: 100/100                                                                 
Owner: REMOTE  Restriction: NONE  COS: 0                    Status: OK          
Group: NONE  Priority: L  TestRTD: 0 msec                                       
                                                                                
Path:     gamma   15--15beta    13--14alpha                                     
Pref:     Not Configured                                                        
                                                                                
                                                                                
gamma 8.1.200                                    alpha 9.1.100                  
FRP:   OK                                        FRP:   OK                      
FRI:   OK                                        FRI:   OK                      
                                                                                
                                                                                
Last Command: cnffrcon 8.1.200                                               
                                                                                
                                                                                
Next Command:        

Table  9-13: cnffrcon-Optional Parameters
Parameter Description
channel Specifies the channel to configure connection parameters. The command configures connection information for one channel at a time. You cannot specify a set of channels. The channel has the following format:

slot.port.DLCI


Table  9-14: cnffrcon-Optional Parameters
Parameter Description
parameters Specifies the bandwidth parameters in the following format:

MIR/MIR, CIR/CIR, VC_Q/VC_Q, PIR/PIR, Cmax/Cmax ECNQ_thresh/ECNQ_thresh, QIR/QIR, FST, %utl/%utl

See "Using Frame Relay Classes " in this chapter for information on the bandwidth parameters. A slash indicates you can specify a value for each direction. FST is either ForeSight enable (y) or disable (n). A "*" is a place-holder for a parameter you do not change.

cnffrcport

Configures the port speed and percent of utilization on the concentrated link of a Port Concentrator Shelf (PCS). This is not a standard command. Primarily, you would use cnffrcport to adjust the rate on the concentrated link due to some unusual system configuration.

Because this command applies to the FRC interface (the concentrated link) rather than the user port for the CPE, the port number and the range of speeds is the same as that of the FRP or FRM card. Thus, the port numbers are 1-4 with rates varying from 56 Kbps through 2 Mbps. During port configuration, a prompt for each parameter appears. To keep the current value of the parameter, press the Return key without typing anything.

Full Name

Configure frame relay port

Syntax

cnffrcport

Related Commands

upfrport, dnfrport, dspfrport, dspcd

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

cnffrcport 6.1 512 88

Description

Reconfigure PCS port 6.1 to have a speed of 512 Kbps and a concentrated link utilization of 88%. (Note that executing dspcd for this slot would show a port count of 44, which indicates that the card set supports a PCS. The Configured Clock of 512 Kbps by itself does not indicate a PCS because a standard FRP-2 or FRM-2 also supports this rate.

System Response
minnow         TN    StrataCom       IPX 8     8.2       Aug. 30 1996 10:16 PST
Physical Port: 6.1            [INACTIVE]
Interface:  FRI-X21 DCE                       Configured Clock:   512 Kbps
Clocking:   Normal                            Measured Rx Clock:    0 Kbps
                                       Min Flags / Frames           1
Port ID                     1022
Port Queue Depth           65535       OAM Pkt Threshold            3 pkts
ECN Queue Threshold        65535       T391 Link Intg Timer        10 sec
DE Threshold                 100 %     N391 Full Status Poll        6 cyl
Signalling Protocol         None       EFCI Mapping Enabled        No
Asynchronous Status           No       CLLM Enabled/Tx Timer   No/  0 msec
T392 Polling Verif Timer      15       IDE to DE Mapping          Yes
N392 Error Threshold           3       Interface Control Template
N393 Monitored Events Count    4          Lead      I
Communicate Priority          No          State   ON
Upper/Lower RNR Thresh  75%/ 25%       Concentrated Link Util    88%
Last Command: cnffrcport 6.1 512 88
Next Command:

Table  9-15: cnffrcport-Parameters
slot.port Specifies the card slot and port number. Because the port number is that of the concentrated link rather than the user port number, the range is 1-4 (not 1-44).
speed Specifies the port clock speed for a 2.0 Mbps FRP-2 or FRM-2. The display shows the configured speed as Configured Clock and the actual speed as Measured Rx Clock. The available speeds are:

1 port (selected speeds, 56-2048 Kbps)
2 ports (selected speeds, 56-1024 Kbps)
3 ports (selected speeds, 56-672 Kbps)
4 ports (selected speeds, 56-512 Kbps)

utilization Specifies the percent of utilization of the concentrated link.

cnffrport

Configures the parameters of a frame relay port. The the cnffrport command applies to the FRP/FRI, FRM/FRI, and UFM/UFI.This command also applies to the FRM-2 or FRP-2. A less-used command for the concentrated link between the PCS and FRM-2 or FRP-2 is cnffrcport.

During port configuration, a prompt for each parameter appears. To keep the current value of the parameter, press the Return key without typing anything. When a parameter is not configurable for a particular application, the parameter appears shaded. You can mix the data rate for each of the ports if the total for all ports does not exceed the maximum composite data rate that the card set supports. The first of the following tables shows the supported data rates for individual T1 and E1 lines


Table  9-16: .
Data Rates at 56 Kbps Increments Data Rates at 64 Kbps Increments
56 112 168 224 64 128 192 256
280 336 392 448 320 384 448 512
504 560 616 672 576 640 704 768
728 784 840 896 832 896 960 1024
952 1008 1064 1120 1088 1152 1216 1280
1176 1232 1288 1344 1344 1408 1472 1536
1400 1456 1512 1568 1600 1664 1728 1792
1624 1680 1736 1792 1856 1920 1984 2048

The following table shows the available data rates on a single, PCS user-port. For the FRP-2 and FRM-2 cards, the maximum composite data rate over the 44 logical, user-ports is 1.792 Mbps.


Table  9-17:
Data Rates in Kbps
9.6 14.4 16 19.2 32 38.4 48 56
64 112 128 168 192 224 256 280
320 336 384

For a PCS, some additional rules for assigning data rates to the 44 ports apply:

Signalling Protocol Timers

This section introduces the implementation of two signalling timers and related parameters you can specify through the cnffrport command.

Periodically, devices use signalling to request the status of other, connected devices or networks. The signalling can be a simple confirmation of the other device's existence or more detailed information, such as the DLCIs, bandwidth, and state of all PVCs. The signalling described here occurs between:

Periodically, frame relay ports within the network transmit a Status Enquiry and wait for a Status response. These exchanges occur across the UNI and the NNI. At the UNI, the user-equipment periodically sends a series of Status Enquiries and awaits a Status response for each enquiry. At the NNI of any network, a frame relay port can generate Status Enquiries and, at alternate times, receive Status Enquiries. In this way, the signalling between networks mirror each other. (The figure on the next page shows the three possible exchanges.) The timers for Status Enquiry and Status response and other, related parameters are the:

In the preceding list, an event is either a Status Enquiry or a Status response. The meaning of event depends on whether the link integrity timer or the polling verification timer is waiting for the event. The link integrity timer waits for Status responses. The polling verification timer waits for Status Enquiries.

Most Status Enquiries contain a sequence number only. After sending these simple Status Enquiries, the polling device checks for the sequence number. Periodically, a full status polling cycle takes place, in which the polling device waits for all applicable information, such as the status of all connections that cross the NNI. For signalling across the UNI, the Frame Relay Forum has recommended a full status polling cycle at every sixth polling cycle. The Frame Relay Forum has not recommended a frequency for the NNI. The cnffrport command lets you select a frequency in the range of once every 1 - 10 polling cycles.

The frame relay port or user-device counts a user-specified number of errors out of a user-specified number of attempts before it signals a Port Communication Failure. These parameters are the error threshold and the monitored events count, respectively. The defaults for these parameters are 3 and 4, respectively. To use the defaults in an example: if 3 out of 4 events are either missing or erroneous within the specified time period, the port signals a Port Communication Failure (a minor alarm).

An event has a user-specified amount of time to arrive. The allowed time period for the arrival of a valid event is the number of seconds you assign to a timer. If an enquiry or response is missing or bad within the timer value, the event is failed. Again, using all default values in an example: if the polling verification timer is 15 seconds and no Status Enquiry arrives within that time, the port records a missing Status Enquiry. If no Status Enquiry arrives during the next two 15-second periods, the port signals a Port Communication Failure. In the UNI example in the figure, the third Status Enquiry does not arrive. Note that each time a Status Enquiry arrives, the polling verification timer restarts counting at 0 seconds rather than waiting until the specified number of seconds has elapsed.

Whether the port is on a UNI or NNI, the polling verification timer setting must be longer than the link integrity timer. (Refer to the forthcoming cnffrport parameters table for values.) You cannot set the link integrity timer for the user-equipment with cnffrport. Usually, the link integrity timer on user-equipment is 10 seconds, which you can verify by executing dspportstats and counting the number of seconds between statistical updates. On the NNI, you can set both timers (they use either Annex A or Annex D).

The 1 Mbps FRI

The data rates available with the 1 Mbps FRI are as follows:


Table  9-18:
Port Data Rates in Kbps for 1Mbps FRI
1024 512 256 128
896 448 224 112
768 384 192 64
672 336 168 56

The rules for assigning data rates to the four ports when using the 1 Mbps FRI are as follows:

Full Name

Configure frame relay port

Syntax (T1/E1 ports on UFM)

cnffrport
<protocol parameters>

Syntax (T1/E1 ports on UFM)

cnffrport
<protocol parameters>

Syntax (All other ports)

cnffrport (for an FRM or FRP) | (for a UFM)

[speed] [clocking]
[port type] [port ID]
[port queue depth] [ECN q_threshold]
[de_threshold] [signalling protocol]
[protocol parameters] [min-flags-bet-frames]
Related Commands

upfrport, dnfrport, dspfrport

Attributes
Privilege 1-2
Jobs Yes
Log Yes
Node IPX, IGX
Lock Yes
Example 1

cnffrport 3.1 48000 48000 100 n N Y 1

Description

Change frame relay port 3.1 to have queue depths of 48000. The interface in this example is a T1.

System Response
pubsigx1       TN    StrataCom       IGX 32    8.2       Sep. 10 1996 16:25 GMT
Port:       3.1               [ACTIVE  ]
Interface:  FRI-T1                            Configured Clock:    64 Kbps
Clocking:   None                              Measured Rx Clock: None
                                       Min Flags / Frames           1
Port ID                        -       Channel Range                1
Port Queue Depth           48000       OAM Pkt Threshold            3 pkts
ECN Queue Threshold        48000       T391 Link Intg Timer        10 sec
DE Threshold                 100 %     N391 Full Status Poll        6 cyl
Signalling Protocol         None       EFCI Mapping Enabled        No
Asynchronous Status           No       CLLM Enabled/Tx Timer   No/  0 msec
T392 Polling Verif Timer      15       IDE to DE Mapping          Yes
N392 Error Threshold           3       Channel Speed               64
N393 Monitored Events Count    4
Communicate Priority          No
Upper/Lower RNR Thresh  75%/ 25%
Last Command: cnffrport 3.1 48000 48000 100 n N Y 1
Next Command:
Example 2

cnffrport 5.1 256 n 12000 10000 100 a N N 15 3 4 3 y y 100 Y 1

Description

Reconfigure frame relay port 8.1 to change queue depths. This is a V.351 interface, so optional parameters begin with the clock speed specification (which has a default of 256 Kbps). An explanation of the screen appears after the screen example.

System Description
padma       VT    StrataCom       IPX 8     8.2       Sep. 10 1996 16:39 GMT
Port:       5.1               [ACTIVE  ]
Interface:  FRI-V35 DCE                       Configured Clock:   256 Kbps
Clocking:   Normal                            Measured Rx Clock:  256 Kbps
                                       Min Flags / Frames           1
Port ID                        0
Port Queue Depth           12000       OAM Pkt Threshold            3 pkts
ECN Queue Threshold        10000       T391 Link Intg Timer        10 sec
DE Threshold                 100 %     N391 Full Status Poll        6 cyl
Signalling Protocol  Annex A UNI       EFCI Mapping Enabled       Yes
Asynchronous Status           No       CLLM Enabled/Tx Timer  Yes/100 msec
T392 Polling Verif Timer      15       IDE to DE Mapping          Yes
N392 Error Threshold           3       Interface Control Template
N393 Monitored Events Count    4          Lead    CTS    DSR    DCD
Communicate Priority          No          State   ON     ON     ON
Upper/Lower RNR Thresh  75%/ 25%
Last Command: cnffrport 5.1 256 NORMAL 0 12000 10000 100 a N N 15 3 4 3 y y 100
Y 1
Next Command:

The screen in Example 2 shows the following:

· Port Queue Depth 12000 Depth of port queue is set at 12000 bytes.
· ECN Queue Depth 10000 Port queue must reach 10000 bytes before FECN and BECN bits are set.
· DE Threshold 100 Port buffer level must be at 100% of capacity before dropping DE frames.
· Signalling Protocol Annex A The selected protocol for the UNI.
· Asynchronous Status N No asynchronous messages to user-device; wait for polling from user-device.
· Polling Verify Timer 15 15 seconds heartbeat period
· Error Threshold 3 3 failures trigger port comm failure
· Monitored Events Count 4 4 events are monitored
· Communicate Priority N Do not communicate port priority to user-device.
· Upper RNR Threshold 75 75% of buffer capacity triggers receiver not ready condition
· Lower RNR Threshold 25 25% of buffer capacity clears a receiver not ready condition
· Minimum Flags/Frame 1 One flag exists for each FR data frame.

Note The following table describes both mandatory and optional parameters because some parameters are mandatory for T1/E1 lines and optional for other line types.

Table  9-19: cnffrport-Parameters
Parameter Description
slot.port Specifies the logical port on the FRP, FRM, or UFM in the format slot.port. For a T1/E1 line, port is a logical number. For a Port Concentrator Shelf, port refers to the logical port in the range 1-44.
interface type Specifies a an interface type for a Port Concentrator Shelf. This parameter applies to only the user interface display and not the PCS. System software does not detect the interface type in the PCS. To change the user-interface type, you must change a card in the PCS.
slot.port line Specifies the UFM slot, port, and line number, where port can be 1-250, and line can be 1-8. Note that the maximum number of T1/E1 lines per node is 32. This maximum could be, for example, spread over 4 UFM-8C card sets that utilize all 8 lines on each back card.
speed Specifies a port clock speed in Kbps for a 2.0 Mbps UFM, FRP, or FRM. The configured speed appears under the Configured Clock heading. The actual clock rate appears under the Measured Rx Clock heading. Note that this option does not apply to T1/E1 lines because these line types use 64 or 56 Kbps timeslots. The range of speeds according to the number of active ports is as follows:

  • 1 port (selected speeds, 56-2048 Kbps)

  • 2 ports (selected speeds, 56-1024 Kbps)

  • 3 ports (selected speeds, 56-672 Kbps)

  • 4 ports (selected speeds, 56-512 Kbps)

Refer to the table at the beginning of this command description for the available clock rates for all port combinations.

clocking Specifies the port's clock type for V.35 and X.21 lines. Clocking does not apply to T1, E1, or Port Concentrator lines. The clock is either normal or looped.

Four combinations of clocking are available for the FRI-V.35. Two combinations of clocking are available for the FRI-X.21. Note that the clock and data direction in DCE mode is the opposite of the direction for DTE mode.

  • FRP or FRM is DCE with normal clocking (V.35 and X.21)

  • FRP or FRM is DCE with looped clocking (V.35 only)

  • FRP or FRM is DTE with normal clocking (V.35 and X.21)

  • FRP or FRM is DTE with looped clocking (V.35 only)

For a description of looped and normal clocking, refer to the IGX Reference Manual, the IPX Reference Manual, or the System Manual.

port type Specifies the port type as either "FR" for frame relay or "ATM" for asynchronous transfer mode. Specify "ATM" when the node uses an AIP or BTM for a V.35 circuit interface to a frame relay port. The port type also configures alarm reporting and other miscellaneous functions for a port. This parameter does not apply to ports on a Port Concentrator Shelf.

When you use cnffrport in a job, the port type parameter follows slot.port. This parameter is not necessary in standard use of cnffrport. Valid entries are V.35, X.21, PORT, or LINE (where LINE indicates a T1 or E1 line).

port ID Specifies the DLCI associated with the port (0-1024) {0}. A node uses this number when you add bundled connections. Otherwise, port ID can be used as a network destination number in global addressing. The port ID does not apply to T1, E1, or PCS ports.
port queue depth Specifies the maximum bytes in the transmission queue at the UFM, FRP, or FRM port. The range is 0-65535 bytes. The default is 65535 bytes.
ecn queue threshold Specifies the threshold at which the system begins to generate explicit congestion notification (BECN and FECN bits) for the port. The range is 0-65535 bytes. The default is 65535 bytes.
de threshold Specifies the port queue depth above which the system discards frames with a set Discard Eligibility (DE) bit. The range is 0-100%. The default is 100%. A threshold of 100% disables DE for the port because a queue cannot contain more than 100% of its capacity.
signalling protocol Specifies the LMI operation mode. The range is 0-255. The default is LMI=2. The system recognizes the following definitions:

LMI = 0 LMI is disabled at this port.

LMI = 1 StrataCom LMI and the asynchronous update process is enabled at this port. Greenwich Mean Time is also enabled.

LMI = 2 LMI is disabled at this port.

LMI = 3 StrataCom LMI is enabled at this port, but asynchronous update process is disabled.

LMI = 4 The port configuration is UNI using CCITT Q.933 Annex A parameters.

LMI = 5 The port configuration is UNI using ANSI T1.617 Annex D parameters.

LMI = 6 The port configuration is NNI using CCITT Q.933 Annex A parameters.

LMI = 7 The port configuration is NNI using ANSI T1.617 Annex D parameters.

asynchronous status Specifies whether the node should send unsolicited LMI update messages when they appear or wait for the user-device to poll. Enter y (yes) or n (no).
polling verify timer Specifies a Link Integrity Verification Timer heartbeat (keep-alive) period. The range is 5-30. The default is 15. Set the timer to 5 secs. more than the setting in the user equipment.
error threshold Specifies the number of failures in the monitored events that cause the "keep alive" process to report an alarm. The theoretical range is 0-255. The valid range is 1-10. A threshold of 0 reverts to 1. A threshold greater than 10 reverts to 10.
monitored events count Specifies the number of monitored events for the "keep alive" process. It has a theoretical range of 0-255 and a valid range of 1-10. A port communication-fail condition is cleared after this number of successful polling cycles. A value of 0 reverts to 1, and a value more than 10 reverts to 10.
communicate priority Specifies whether the system should communicate the SNA priority of the connections to the user-device on the port. Enter y (yes) or n (no). (SNA priority is either H or L.)
upper/lower RNR
threshold
Specifies the receiver not ready (RNR) thresholds. The upper threshold is the number of receiver not ready indications from the user equipment before an alarm is generated for this port. The lower RNR threshold is the number of indications from the user equipment before an alarm is cleared. The range is 1-255. The default for the upper RNR threshold is 75. The default for the lower RNR threshold is 25.
Enable EFCI to BECN mapping Directs the system to map the Frame Relay BECN bit to the EFCI bit in a FastPacket.
ForeSight over port Specifies whether the system should use CLLM over the port.
min. flags/frame Specifies the minimum number of flags between frames when the direction of transmission is from the node to the user-equipment. Any value greater than 0 is valid on the UFM, FRP or FRM. The default is 1. On a Port Concentrator Shelf, the range is 1-16.
OAM FastPacket
threshold
Specifies how many OAM FastPackets must arrive from a remote NNI port before the local port generates "A-bit = 0" in the signalling protocol message to the locally attached device. The range for this parameter is 0-15 packets. The default is 3 packets. A 0 disables this function. The OAM FastPacket threshold setting applies to UNI and NNI ports. The following two paragraphs provide a more detailed explanation of the A-bit and OAM FastPacket threshold usage.

On any frame relay port (UNI or NNI) that is using a signalling protocol (StrataCom LMI, Annex A, or Annex D), the FRP or FRM provides a Status message to the attached equipment in response to a Status Enquiry message or as an Asynchronous Update. These Status messages contain details about every PVC configured on the port. In particular, the "PVC Active" bit (the A-bit) represents whether a PVC is active (A-bit=1) or out of service (A-bit = 0). If the other end of the connection PVC on a UNI port, the only conditions that can cause the local frame relay card to send an A-bit=0 are:

  • The PVC being "down" (intentionally taken out of service)

  • The PVC being failed for any reason (such as a hardware failure, trunk failure with no ability to reroute, and so on)

If the other end of the PVC terminates on an NNI port, one additional condition can cause the local UFM, FRP, or FRM to send an A-bit=0 to the local device: if the remote NNI port on the card receives an A-bit=0 from the remote network over the remote NNI, then the local card can propagate an A-bit=0 out the local port. The mechanism by which the remote card notifies the local card of the A-bit=0 coming from the remote network is OAM FastPackets. The local node sends one OAM FastPacket every 5 seconds for as long as the A-bit coming from the remote network is 0.

link integrity timer
(T391)
Specifies the interval after which the system sends Status Enquiry messages across the NNI port. The range for the interval is 5-30 seconds. The default is 6 seconds. Both networks do not need to have the same T391 value.

On a frame relay NNI port, the Link Integrity Timer (T391) specifies how often the UFM, FRP, or FRM generates a Status Enquiry message to the attached network using the selected NNI signalling protocol (Annex A or Annex D). The card should receive a Status message for every Status Enquiry message it transmits. If the frame relay card receives no responses or invalid responses, a Port Communication Failure results. (This causes a minor alarm.) Using the default values for N392 Error Threshold and N393 Monitored Events Count in an example: an error occurs when no response (or a bad response) arrives for 3 out of the last 4 Status Enquiry messages. (The default for N392 Error Threshold is 3. For N393 Monitored Events Count, the default is 4.)

N392 error threshold Specifies the number of bad or undelivered responses to Status Enquiry messages that can occur before the system records a Port Communication Failure. The range is 1-10. The default is 3. See the description of the link integrity timer parameter for example usage.
N393 monitored events count Specifies the number of Status Enquiry messages in a period wherein the system waits for responses to the enquiries. The range is 1-10. The default is 4. See the description of the link integrity timer parameter for example usage.
full status polling cycle (N391) Specifies the interval at which the system sends the Full Status Report request for all PVCs across the NNI port. The range is 1-255 polling cycles. The default is 10 cycles. The Full Status reports the status of all the connections across the NNI.
card type Specifies the card type when you enter the cnffrport command in a job. This parameter is not available except when you specify cnffrport in a job by using the addjob command. During the job specification, you enter the card type just after the slot.port during the command specification phase of addjob. Valid card types are "V.35," "X.21," "port," and "line," where "line" indicates a T1 or E1 line.
CLLM status Tx Timer Specifies an interval for the system to send ForeSight congestion messages across the NNI. The range is 40 ms-350 ms. The default is 100 ms. Both networks must be StrataCom networks.
IDE to DE mapping Specifies whether the destination system should map the internal DE bit (IDE) status in the FastPacket or ATM cell to the frame relay DE bit at the destination. Enter y (yes) or n (no). If you specify the non-standard case of CIR=0 with either addcon or cnffrcls, you must first enable IDE to DE mapping. Refer to the section titled "Using Frame Relay Classes " for important information on setting CIR=0.
interface control
template
Specifies the control leads available on the V.35 and X.21 physical frame relay ports and the meaning for each lead.
channel range Specifies the DS0s for the T1 or E1 logical port. The value can be 1 or a contiguous combination in the range 1-24 for T1 or 1-31 for E1. For example, 7-12 indicates 6 DS0s for the port, starting with DS0 7. Before you use this command, specify the valid channel range with the addfrport command.
channel speed Specifies the bandwidth available to a logical port. The speed is 64 Kbps times the number of DS0s you specify with the channel range parameter.

cnfict

Configures the interface control template signals. Each interface control lead must be individually configured. (Each data channel has a default interface control template for its active, conditioned, and looped-near and far states.) The signals available to cnfict depend on the type of back card and whether the port mode is DCE or DTE. On an IPX, the applicable front cards are the SDP, LDP, FRP, CDP (for data), and FTC (for data). On an IGX, the applicable front cards are the LDM, HDM, FRM, UFM, CVM (for data), and FTM (for data).


Note The cnfict command is not valid for V.11 and X.21 interfaces. For FRP V.35 and Port Concentrator V.35 and V.28 interfaces, only the active template is usable, and you can configure the leads to on or off.

When Y-cable redundancy is in effect, the control template configuration for the data channels terminating at the primary slot also applies to the data channels of the secondary slot. Any configuration information you attempt to apply to the secondary slot is ignored. The following lists which leads are configurable for each type of data interface supported by the IPX or IGX. The entries under the "IPX or IGX Name" column indicate the abbreviations to use when you specify input or output leads on the command line.


Table  9-20:
Configurable Lead Listing
Source IPX/IGX name RS-232C RS-232D RS-449 V.35 X.21 Fast EIA CCITT (ITU-T) Equivalent Function
DTE RTS CA CA RS C F4 105 Request to Send
DCE CTS CB CB CS D F4 106 Clear to Send
DCE DSR CC CC DM E F3 107 Data Set Ready
DCE DCD CF CF RR F F7 109 Data Carrier Detect (RLSD)
DCE QM QM QM Equalizer Mode
DTE pin 11 11 11 Sometimes used for Data
DCE SDCD SCF SCF 122 Secondary Data Carrier Detect
DCE SCTS SCB SCB 121 Secondary Clear to Send
DTE STxD SBA SBA F5 118 Secondary Transmit Data
DTE NS NS F7 New Sync
DCE SRxD SBB SBB F5 119 Secondary Receive Data
DCE DCR DCR Divided Receiver Clock
DTE RL RL RL F6 Remote Loopback
DTE SRTS SCA SCA 120 Secondary Request to Send
DTE DTR CD CD TR H F3 108.2 Data Terminal Ready
DCE SQ CG CG SQ 110 Signal Quality Detect
DCE RI CE CE IC J** 125 Ring Indicator
DTE SF CH CH SF 111 Signal Rate Select (to DCE)
DCE SI CI CI SI 112 Signal Rate Select (to DTE)
DTE BSY BSY IS F1 Busy (In Service)
DCE SB TST SB F1 Test Indicator
DTE LL LL F2 Local Loopback
DCE TM TM K** F6 Test Mode
DTE SS SS Select Standby
DTE C C Control
DCE I I Indicator

Asterisk (**) indicate the listing is applicable to only an SDP or HDM card. Pins 11 and 23 on an RS-232 port are bi-directional, and their default direction is input. See the cnfcldir command for information on changing the direction of these pins. The cpyict command can be used to copy an interface control template from one data channel to another. The template can then be edited using the cnfict command. The dspbob command displays the state of leads at specified intervals.

The preceding list shows the equivalence between RS-232C, RS-232D, RS-449, V.35, and X.21 interfaces. An IPX or IGX treats leads impartially for non-interleaved connections. Any signal arriving on an EIA pin at one end may be transmitted to any pin at the other end. An imposed maximum of 12 EIA leads applies to any interface type. For interleaved EIA connections, the "Fast EIA" column shows which leads are carried in the interleaved bytes in the data packets. All remaining leads are carried in traditional control lead packets.

Full Name

Configure interface control template

Syntax

cnfict