FTC Trunk Commands

This chapter describes the commands to configure, display, and debug FTC ports. There are two setups for FTC trunks:

• Back to back, from one Cisco 3800 system to another Cisco 3800 system

• From a Cisco 3800 system to a Cisco Stratacom IGX or IPX switch through a Frame Relay cloud

Commands are listed in Table 5-1, Table 5-2, and Table 5-3 and are described in detail later in this chapter.

Table  5-1: Commands to Configure FTC Ports

Command	Description
ftc-trunk session-trunk	Configure a session trunk.
ftc-trunk management-dlci	Set which DLCI carries management traffic.
ftc-trunk voice-dlci	Set which DLCI carries voice traffic.
ftc-trunk frame-relay-dlci	Set which DLCI carries Frame Relay traffic.
ftc-trunk management protocol	Set an FTC trunk to be an IPX switch or other device.
ftc trunk retry-count	Set the number of times to retry management messages.
ftc-trunk transmit-timeout	Set the amount of time to await acknowledgment.
frame-relay lmi-n391dte	Configure the full status polling counter.
frame-relay lmi-n392dte	Configure the DCE and NNI error threshold.
frame-relay lmi-n393dte	Configure a monitored event count on a DTE or NNI interface.
frame-relay lmi-type	Select local management interface (LMI) type.
keepalive	Set the LMI interface keepalive mechanism interval.
loopback	Loop the entire trunk or only frames for a specified connection.
shutdown	Disable the FTC port.

Table  5-2: Command to Display FTC Ports

Command	Description
show interface serial	Display configuration and statistics on a serial interface.

Table  5-3: Commands to Debug FTC Ports

Command	Description
debug ftc management	Display FTC trunk-related debug messages.
debug ftc verbose	Display detailed debug messages.

Quick Reference of FTC Commands and Modes

Figure 5-1 illustrates FTC commands with modes and prompts.

Figure 5-1: FTC Commands with Modes and Prompts

Configuration Information

To configure the FTC trunk, specify a serial interface with an encapsulation of ftc-trunk--for example, as follows:

Europa# config term
Europa(conf)# interface serial 0/0
Europa(conf-if)# encap ftc-trunk

debug ftc management

From privileged exec mode, you can enable the FTC trunk management related debugger message display. Use the no form of the command to disable the FTC trunk management related debugger message display.

Europa# debug ftc management
Europa# no debug ftc management

debug ftc verbose

From privileged exec mode, you can enable the display of detailed debug messages when encapsulation type is ftc-trunk. Use the no form of this command to disable the display of detailed debug messages when encapsulation type is ftc-trunk.

Europa# debug ftc verbose
Europa# no debug ftc verbose

ftc-trunk frame-relay-dlci

From global configuration mode, you can configure which FTC trunk DLCI will carry Frame Relay traffic. Use the no form of this command to undo the FTC trunk DLCI configuration for Frame Relay traffic.

Europa(conf-if)# ftc-trunk frame-relay-dlci dlci-number
Europa(conf-if)# no ftc-trunk frame-relay-dlci dlci-number

Syntax Description

dlci-number

A DLCI from 16 to 1007.

ftc-trunk management protocol

From global configuration mode, you can set whether the FTC trunk is a Cisco StrataCom IPX switch or other device.

Europa(conf-if)# ftc-trunk management protocol { normal | inverted | none }

Syntax Description

normal	Act as a Cisco 3800 communicating with an IPX switch.
inverted	Act as a Cisco IPX switch communicating with a Cisco 3800.
none	Don't communicate FTC management information because there is a public Frame Relay network at the other end of the trunk.

ftc-trunk management-dlci

From global configuration mode, you can configure which FTC trunk DLCI will carry management traffic. Use the no form of this command to undo the configuration for the FTC trunk DLCI to carry management traffic.

Europa(conf-if)# ftc-trunk management-dlci dlci-number
Europa(conf-if)# no ftc-trunk management-dlci dlci-number 

Syntax Description

dlci-number

A DLCI from 16 to 1007.

ftc trunk retry-count

From global configuration mode, you can configure how many times the FTC trunk retries management messages. Use the no form of this command to undo the configuration for FTC trunk retries.

Europa(conf-if)# ftc-trunk retry-count number
Europa(conf-if)# no ftc-trunk retry-count number

Syntax Description

number

The number of retries from 2 to 100. The default is 5.

ftc-trunk session-trunk

Specifies a connection ID for a trunk when the trunk is attached to a Cisco StrataCom network, or DLCI when the trunk is attached to a public network. Use the following syntax from global configuration mode:

Europa(conf-if)# ftc-trunk session-trunk connection-id cid-number { dlci dlci-number }

Syntax Description

cid-number	A connection ID chosen by the user from 1 to 252.
dlci-number	A DLCI from 16 to 1007.

ftc-trunk transmit-timeout

From global configuration mode, you can configure the amount of time the FTC trunk waits for acknowledgment. Use the no form of this command to undo the configuration of the FTC trunk to wait for acknowledgment.

Europa(conf-if)# ftc-trunk transmit-timeout number
Europa(conf-if)# no ftc-trunk transmit-timeout number

Syntax Description

number

The number of retries from 1 to 60. The default is 5.

ftc-trunk voice-dlci

You can configure which FTC trunk DLCI carries voice traffic. Use the no form of this command to undo the configuration.

Europa(conf-if)# ftc-trunk voice-dlci dlci-number
Europa(conf-if)# no ftc-trunk voice-dlci dlci-number

Syntax Description

dlci-number

A DLCI from 16 to 1007.

frame-relay lmi-n391dte

You can configure the full status polling counter. Use the no form of the command to undo the full status polling counter.

Europa(conf-if)# frame-relay lmi-n391dte keep_exchanges_number
Europa(conf-if)# no frame-relay lmi-n391dte keep_exchanges_number

Syntax Description

keep_exchanges_number

The number of keep exchanges performed before requesting a full status message, from 1 to 255. The default is 6.

frame-relay lmi-n392dte

You can configure the DCE and Network-to-Network Interface (NNI) error threshold.

Europa(conf-if)# frame-relay lmi-n392dte error_threshold_number

Syntax Description

error_threshold_number

The number of errors, from 1 to 10. The default is 2.

frame-relay lmi-n393dte

You can configure the monitored event count on a DTE or NNI interface.

Europa(conf-if)# frame-relay lmi-n393dte event-count

Syntax Description

event-count

The number of monitored events, from 1 to 10. The default is 4.

frame-relay lmi-type

From global configuration mode, you can select the local management interface (LMI) type.

Europa(conf-if)# frame-relay lmi-type { ansi | cisco | q933a }

Syntax Description

ansi	Annex D defined by the ANSI standard T1.617.
cisco	LMI type defined jointly by Cisco and three other companies.
q933a	ITU-T Q.933, Annex A.

keepalive

From global configuration mode, you can configure the LMI interface keepalive mechanism interval. Use the no form of the command to disable the keepalive interval.

Europa(conf-if)# keepalive number
Europa(conf-if)# no keepalive number

Syntax Description

number

The number of seconds from 0 to 32767. The default is 10.

---

Note This command works on any port, not only FTC.

---

loopback

You can enable the loop for the entire FTC trunk or only frames for a specified connection. Use the no form of this command to disable loopback.

Europa(conf-if)# loopback [ connection-id cid-number ]
Europa(conf-if)# no loopback [ connection-id cid-number ]

Syntax Description

cid-number

Connection identifier from 1 to 252.

---

Note This command works on any port, not only FTC.

---

shutdown

Disables the FTC trunk. Use the no form of this command to restart the FTC trunk.

Europa(conf-if)# shutdown
Europa(conf-if)# no shutdown

---

Note This command works on any port, not only FTC.

---