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The ATM-CES port adapters (PA-A2-4T1C-OC3SM, PA-A2-4T1C-T3ATM, PA-A2-4E1XC- OC3SM, PA-A2-4E1XC-E3ATM, PA-A2-4E1YC-OC3SM, and PA-A2-4E1YC-E3ATM) are available on Cisco 7200 series routers. The ATM-CES has four T1 (1.544 Mbps) or four E1 (2.048 Mbps) ports (75- or 120-ohm) that can support both structured (N x 64 kbps) and unstructured ATM Forum-compliant circuit emulation services (CES), and one port that supports an OC-3 (155 Mbps) single-mode intermediate reach interface or a T3 (45 Mbps) or E3 (34 Mbps) standards-based ATM interface. The target application of the ATM-CES port adapter is access to a broadband public or private ATM network where multiservice consolidation of voice, video, and data traffic over a single ATM link is a requirement.
The ATM-CES port adapter supports the following features:
This feature is supported on the Cisco 7200 series routers.
For information on how to configure the ATM-CES interfaces, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the "Configuring Interfaces" chapter of the Configuration Fundamentals Configuration Guide. All ATM and interface commands might not be applicable to the ATM-CES interface. If a command is not available, the router displays the message "Command not supported on this interface."
In addition to the commands in the "Configuring ATM" chapter, you can configure the four T1 or E1 interfaces as a CBR interface to convert CBR traffic into ATM cells for transport across an ATM network. You can also configure the the OC3 or DS3 or E3 interface.
Perform the tasks in the following sections to configure the interfaces on the ATM-CES port adapter. The first five tasks are required. Depending on the type interface on the ATM-CES port adapter, perform only one of the first three tasks.
For information on other commands that can be used by the ATM-CES port adapter such as LAN emulation and bridging, refer to the Cisco IOS Release 11.1 configuration guides.
For ATM-CES configuration examples, see "Configuration Examples" later in this section.
Voice and video services (circuit emulation) allow you to interconnect existing T1 or E1 interfaces and other kinds of constant bit rate (CBR) equipment. CBR services include such features as PBX interconnect, consolidated voice and data traffic, and video conferencing.
With circuit emulation, data received from an external device at the edge of an ATM network is converted to ATM cells, sent through the network, reassembled into a bit stream, and passed out of the ATM network to its destination. T1/E1 circuit emulation does not interpret the contents of the data stream. All the bits flowing into the input edge port of the ATM network are reproduced at one corresponding output edge port.
An emulated circuit is carried across the ATM network on a PVC, which is configured through the network management system.
The ATM-CES port adapter offers two types of services:
CES-IWF is a service based on ATM Forum standards that allows communications to occur between CBR and ATM UNI interfaces, that is, between non-ATM telephony devices (such as classic PBXs or TDMs) and ATM devices (such as Cisco 7200 series routers). Thus, a Cisco 7200 series router equipped with an ATM-CES port adapter offers a migration path from classic T1/E1 CBR data communications services to emulated CES T1/E1 unstructured (clear channel) services or structured (N x 64) services in an ATM network.
Figure 2 shows a simplified representation of CES-IWF functions in an ATM network.
The ATM-CES port adapter offers the following circuit emulation services:
For information on configuring CES services, refer to "Configure the ATM-CES Port Adapter for Circuit Emulation Services" later in this section.
CES-IWF and CBR traffic relate to a quality of service (QOS) classification defined by the ATM Forum for Class A (AAL1) traffic in ATM networks. In general, Class A traffic pertains to voice and video transmissions.
In an ATM networking environment, CBR refers to a particular class of traffic that is generated by edge (source) devices and propagated into ATM networks for transmission to other edge (destination) devices in the network.
The ATM-CES port adapter has been designed specifically to handle CBR traffic in an ATM networking environment. To provide requisite timing functions in support of CES operations, you can specify any one of three clocking modes:
However, to support synchronous clocking or SRTS clocking in your ATM networking environment, your network must incorporate the following facilities:
For information on configuring timing services, refer to "Configure Network Clock Source and Priorities" later in this section.
For information on how to configure the OC3 interface on the ATM-CES port adapter, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the "Configuring Interfaces" chapter of the Configuration Fundamentals Configuration Guide. All ATM and interface commands might not be applicable to the ATM-CES interface. If a command is not available, the router displays the message "Command not supported on this interface."
For information on other commands that can be used by the ATM-CES port adapter such as LAN emulation and bridging, refer to the Cisco IOS Release 11.1 configuration guides.
The ATM-CES port adapter can contain a DS3 (45 Mbps) standards-based ATM interface. You must configure at least one permanent virtual circuit (PVC) or switched virtual circuit (SVC) on the DS3 port. The virtual circuit options you use must match in three places: on the router, on the ATM switch, and at the remote end of the PVC or SVC connection.
To configure the DS3 port on the ATM-CES port adapter, perform the following tasks beginning in global configuration mode:
| Task | Command |
|---|---|
| Step 1 Specify an ATM-CES port adapter interface. | interface atm slot/0 |
| Step 2 If IP routing is enabled on the system, assign a source IP address and subnet mask to the interface. | ip address ip-address mask |
| Step 3 Optionally, set the cable length to long. The default is short. Short is up to 50 feet, and long is greater than 50 feet. | atm lbo {long | short} |
| Step 4 Optionally, set the clock source to external. | no atm clock internal |
| Step 5 Optionally, enable DS3 scrambling. | atm ds3-scramble |
| Step 6 Specify the DS3 framing mode. | atm framing {cbitadm | cbitplcp | m23adm | m23plcp} |
| Step 7 Configure a permanent virtual circuit (PVC).1 | atm pvc vcd vpi vci aal-encap [peak average burst] [oam seconds] |
| Step 8 Associate an existing map list to an interface.2 | map-group name |
| Step 9 Change the shutdown state to up and enable the ATM interface, thereby starting the segmentation and reassembly (SAR) operation on the interface. | no shutdown |
For additional commands that can be used with the DS3 port, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the "Configuring Interfaces" chapter of the Configuration Fundamentals Configuration Guide. All ATM and interface commands might not be applicable to the ATM-CES interface. If a command is not available, the router displays the message "Command not supported on this interface."
For information on other commands that can be used by the ATM-CES port adapter such as LAN emulation and bridging, refer to the Cisco IOS Release 11.1 configuration guides.
The ATM-CES port adapter can contain a E3 (34 Mbps) standards-based ATM interface. You must configure at least one permanent virtual circuit (PVC) or switched virtual circuit (SVC) on the E3 port. The virtual circuit options you use must match in three places: on the router, on the ATM switch, and at the remote end of the PVC or SVC connection.
To configure the E3 port on the ATM-CES port adapter, perform the following tasks beginning in global configuration mode:
| Task | Command |
|---|---|
| Step 1 Specify an ATM-CES port adapter interface. | interface atm slot/0 |
| Step 2 If IP routing is enabled on the system, assign a source IP address and subnet mask to the interface. | ip address ip-address mask |
| Step 3 Optionally, set the clock source to external. | no atm clock internal |
| Step 4 Optionally, disable E3 scrambling. | no atm e3-scramble |
| Step 5 Optionally, specify the E3 framing mode. The default is G.751 PLCP encapsulation. | atm framing [g832adm | g751adm | g751plcp] |
| Step 6 Configure a permanent virtual circuit (PVC).1 | atm pvc vcd vpi vci aal-encap [peak average burst] [oam seconds] |
| Step 7 Associate an existing map list to an interface.2 | map-group name |
| Step 8 Change the shutdown state to up and enable the ATM interface, thereby starting the segmentation and reassembly (SAR) operation on the interface. | no shutdown |
For additional commands that can be used with the DS3 port, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the "Configuring Interfaces" chapter of the Configuration Fundamentals Configuration Guide. All ATM and interface commands might not be applicable to the ATM-CES interface. If a command is not available, the router displays the message "Command not supported on this interface."
For information on other commands that can be used by the ATM-CES port adapter such as LAN emulation and bridging, refer to the Cisco IOS Release 11.1 configuration guides.
After you create the ATM interface, you can perform the tasks in the following sections to configure the T1/E1 interfaces on the ATM-CES port adapter. The T1/E1 interface is called a constant bit rate (CBR) port and supports circuit emulation services (CES):
A circuit that you set up on a CBR port for unstructured service is always identified as "circuit 0," because only one such circuit can be established on any given CBR port. Such a circuit consumes the entire bandwidth of the port, which is provisioned manually at the time you set up the unstructured circuit and remains dedicated to that port, whether that port is actively transmitting CBR data or not.
A CES module converts CBR traffic into ATM cells for propagation through an ATM network. The ATM cell stream is directed to an outgoing ATM port or CBR port. If the outgoing port is an ATM port on the same Cisco 7200 series router, the PVC is called a "hard PVC." As a general rule when setting up a hard PVC, you must interconnect a CBR port and the ATM port in the same ATM-CES port adapter. Only hard PVCs are supported in the Cisco 7200 series router.
To configure the T1/E1 port on the ATM-CES port adapter for unstructured (clear channel) CES services, perform the following tasks beginning in global configuration mode:
For additional command that can be used with the CBR port, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the "Configuring Interfaces" chapter of the Configuration Fundamentals Configuration Guide. All ATM and interface commands might not be applicable to the ATM-CES interface. If a command is not available, the router displays the message "Command not supported on this interface."
For information on other commands that can be used by the ATM-CES port adapter such as LAN emulation and bridging, refer to the Cisco IOS Release 11.1 configuration guides.
Structured (N x 64 kbps) CES services differ from unstructured CES services in that the structured services allow you to allocate the bandwidth in a highly flexible and efficient manner. With the structured services, you use only the bandwidth actually required to support the active structured circuit(s) that you configure.
For example, in configuring an ATM-CES port adapter for structured service, you can define multiple hard PVCs for any given ATM-CES port adapter's T1/E1 port. The ATM-CES port adapter provides up to 24 time slots per T1 port and up to 31 time slots per E1 for defining structured CES circuits. To see the bandwidth that is required on an ATM link for this particular circuit, use the show ces circuit command.
For simplicity in demonstrating configuration tasks for structured CES services, the procedures in this section are directed primarily at setting up a single CES circuit per T1/E1 port. However, these procedures outline the essential steps and command syntax that you would use if you were to set up multiple CES circuits on a T1/E1 port.
Structured CES services require network clock synchronization by means of the synchronous clocking mode. You must select the clock source and define its priority locally for each Cisco 7200 series router in your network. You do this by means of the network-clock-select command.
To configure the T1/E1 port on the ATM-CES port adapter for structured (N x 64 kbps) CES services without CAS, perform the following tasks beginning in global configuration mode:
| Task | Command |
|---|---|
| Step 1 Specify an ATM-CES port adapter interface. | interface cbr slot/port |
| Step 2 Configure the port to perform structured CES services. The default is unstructured. | ces aal1 service [structured | unstructured] |
| Step 3 Optionally, select the clock method. The default is synchronous. Adaptive and SRTS are only available for unstructured mode. | ces aal1 clock {adaptive | srts | synchronous} |
| Step 4 If synchronous clocking is selected, configure the clock source. | ces dsx1 clock {loop-timed | network-derived} |
| Step 5 Specify the line code format used for the physical layer. The default is AMI. | ces dsx1 linecode {ami | b8zs} (for T1)
ces dsx1 linecode {ami | hdb3} (for E1) |
| Step 6 Specify the framing format The default for T1 is ESF and for E1 is E1_LT. | ces dsx1 framing {esf | sf} (for T1)
ces dsx1 framing {e1_crc_mfCASlt | e1_crc_mflt | e1_lt | e1_mfCAS_lt} (for E1) |
| Step 7 Optionally, specify the line build out (cable length). Values are (in feet): 0_110, 10_200, 220_330, 330_440, 440_550, 550_660, 660_above, and square_pulse. The default is 0_110 feet. | ces dsx1 lbo length |
| Step 8 Specify the circuit number for structured services and optionally specify the logical name of the PVC. For T1 structured service the range is 1 through 24. For E1 structured service the range is 1 through 31. If you do not specify a circuit name, the default is CBRx/x:x. | ces circuit circuit-number [circuit-name name] |
| Step 9 Specify the timeslots to be used by the PVC. For T1 the range is 1 through 24. For E1 structured service the range is 1 through 31. Use a dash to indicate a range (for example 1-24). Use a comma to separate the timeslot (for example, 1,3,5). | ces circuit circuit-number timeslots range |
| Step 10 Optionally, configure the circuit cell delay variation. Range is 1 through 65535 milliseconds. The default range is 2000 milliseconds. | ces circuit cdv range |
| Step 11 Define the particular ATM destination port for the PVC. | ces pvc circuit-number interface atm slot/port vci number vpi number |
| Step 12 Change the shutdown state to up and enable the ATM interface, thereby starting the segmentation and reassembly (SAR) operation on the interface. | no shutdown |
| Step 13 Enable the PVC. | no ces circuit circuit-number shutdown |
For additional command that can be used with the CBR port, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the "Configuring Interfaces" chapter of the Configuration Fundamentals Configuration Guide. All ATM and interface commands might not be applicable to the ATM-CES interface. If a command is not available, the router displays the message "Command not supported on this interface."
For information on other commands that can be used by the ATM-CES port adapter such as LAN emulation and bridging, refer to the Cisco IOS Release 11.1 configuration guides.
Because the ATM-CES port adapter emulates constant bit rate services over ATM networks, it must be capable of providing support for handling channel-associated signaling (CAS) information introduced into structured CES circuits by PBXs and time-division multiplexing (TDM) devices. The ces circuit cas interface command provides this feature.
With respect to the CAS information carried in a CBR bit stream, an ATM-CES port adapter can be configured to operate as follows:
When the CAS feature is enabled for a CES circuit, the bandwidth of the DS0 channel is limited to 56 kbps for user data, because CAS functions consume 8 kbps of channel bandwidth for transporting the ABCD signaling bits. These signaling bits are passed transparently from the ingress node to the egress node as part of the ATM AAL1 cell stream.
In summary, when the optional CAS and on-hook detection features are enabled, the following conditions apply:
To configure the T1/E1 port on the ATM-CES port adapter for channel associated signaling, first perform the tasks in the "Configure Structured (N x 64) CES Services" section and then perform the following tasks beginning in global configuration mode:
You can specify up to four network clock sources for a Cisco 7200 series router. The highest priority active port in the chassis supplies primary reference source to all other chassis interfaces that require network clock synchronization services. The fifth network clock source is always the local oscillator on the ATM-CES port adapter.
To direct a CBR port to use the network-derived clock, you must configure the CBR port with the ces dsx1 clock source network-derived interface command. For information on configuring the CRB port, refer to "Configure the ATM-CES Port Adapter for Circuit Emulation Services" earlier in the section.
To establish the sources and priorities of the requisite clocking signals for an ATM-CES port adapter in a Cisco 7200 series router, perform the following tasks beginning in global configuration mode:
To verify the clock signal sources and priorities that you established in the previous procedure for your ATM-CES port adapter, use the show network-clocks privileged EXEC command.
To set the following loopbacks to troubleshoot the ATM-CES port adapter using Cisco IOS software, perform the first task beginning in global configuration mode followed by any of the other tasks depending on your needs:
These loopback commands loop all packets from the ATM interface back to the interface and also direct the packets to the network.
After configuring the new interface, you can display its status. You can also display the current state of the ATM-CES port adapter and connected virtual circuits. To show current virtual circuits and traffic information, perform the following tasks in EXEC mode:
For information on other show commands that can be used with the ATM-CES port adapter, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the "Configuring Interfaces" chapter of the Configuration Fundamentals Configuration Guide.
This section provides several examples of configuring the ATM-CES port adapter. For additional examples, refer to the "Configuring ATM" chapter of the Wide-Area Networking Configuration Guide and the PA-A2 ATM-CES Port Adapter Installation and Configuration publication.
The following example shows how to configure the DS3 port on the ATM-CES port adapter. In this example, the ATM interface is configured for cbitplcp framing and aal5snap encapsulation.
router(config)#interface atm 6/0router(config-if)#ip address 1.1.1.1 255.255.255.0router(config-if)#atm lbo shortrouter(config-if)#atm clock internalrouter(config-if)#no atm ds3-scramblerouter(config-if)#atm framing cbitplcprouter(config-if)#atm pvc 55 255 128 aal5snaprouter(config-if)#map-group sanjoserouter(config-if)#no shutdownrouter(config-if)#exitrouter(config)#exit
The following example shows how to configure the T1 port on the ATM-CES port adapter for unstructured (clear channel) CES services. In this example, the T1 port uses adaptive clocking and the circuit name "CBR-PVC-A."
router(config)#interface cbr 6/0router(config-if)#ces aal1 service unstructuredrouter(config-if)#ces aal1 clock adaptiverouter(config-if)#atm clock internalrouter(config-if)#ces dsx1 clock network-derivedrouter(config-if)#ces circuit 0 circuit-name CBR-PVC-Arouter(config-if)#ces pvc 0 interface atm 6/0 vpi 0 vci 512router(config-if)#no shutdownrouter(config-if)#no ces circuit 0 shutdownrouter(config-if)#exitrouter(config)#exit
The following example shows how to establish the the T1 port on the ATM-CES port adapter as the first clocking priority and the ATM port as the second clocking priority.
router(config)#network-clock-select 1 cbr 6/0router(config)#network-clock-select 2 atm 6/0router(config)#exit
The following example shows a sample output from the show network-clocks command. This example shows the clock sources created and the current clock source. Under normal operating conditions, the priority 1 clock source is assumed to be the active source.
show network-clocks
This section documents new or modified commands. All other commands used with this feature are documented in the Cisco IOS Release 11.1 command references.
To enable scrambling of the ATM cell payload for the DS-3 PLIM on an ATM interface, use the atm ds3-scramble interface configuration command. To disable scrambling of the ATM cell payload for the DS-3 PLIM, use the no form of this command.
atm ds3-scrambleThis command has no keywords and arguments.
DS3 scrambling is disabled.
Interface configuration
This command was modified in Cisco IOS Release 11.1 CA to change the command syntax from ds3 scramble to atm ds3-scramble.
D3 scrambling is used to assist clock recovery on the receiving end.
The following example disables DS3 scrambling on the interface:
interface atm 4/0 no atm ds3-scramble
To enable scrambling of the ATM cell payload for the E3 PLIM on an ATM interface, use the atm e3-scramble interface configuration command. To disable scrambling of the ATM cell payload for the E3 PLIM, use the no form of this command.
atm e3-scrambleThis command has no keywords and arguments.
E3 scrambling is enabled.
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA.
E3 scrambling is used to assist clock recovery on the receiving end.
The following example disables E3 scrambling on the interface:
interface atm 2/0 no atm e3-scramble
To specify DS3 line framing on an ATM interface, use the atm framing interface configuration command. To return to the default C-bit with Physical Layer Convergence Protocol (PLCP) framing, use the no form of this command.
atm framing [cbitadm | cbitplcp | m23adm | m23plcp]| cbitadm | (Optional) Specifies C-bit with ATM direct mapping. |
| cbitplcp | (Optional) Specifies C-bit with PLCP framing. This is the default. |
| m23adm | (Optional) Specifies M23 ATM direct mapping. |
| m23plcp | (Optional) Specifies M23 with PLCP framing. |
cbitplcp
Interface configuration
This command was modified in Cisco IOS Release 11.1 CA to include Cisco 7200 series routers with the ATM-CES port adapter.
This command is available only on Cisco 4500 and Cisco 4700 routers with DS3 access speeds, and on Cisco 7200 series routers with the ATM-CES port adapter. This command is not available on the Cisco 7000 series or Cisco 7500 series.
Framing on the interface must match that on the switch for this ATM link.
The following example specifies M23 ADM framing on a router that has been set up with DS3 access to an ATM network:
interface atm 4/0 atm framing m32adm
To specify E3 line framing, use the atm framing interface configuration command. To return to the default G.751 Physical Layer Convergence Protocol (PLCP) framing, use the no form of this command.
atm framing [g832adm | g751adm | g751plcp]| g832adm | (Optional) Specifies G.832 ATM direct mapping. |
| g751adm | (Optional) Specifies G.751 ATM direct mapping. |
| g751plcp | (Optional) Specifies G.751 PLCP encapsulation. This is the default. |
The default framing is g751plcp.
Interface configuration
This command was modified in Cisco IOS Release 11.1 CA to include the g751plcp keyword and to include information on the Cisco 7200 series routers with the ATM-CES port adapter.
The default framing is described in the ITU-T Recommendation G.751.
Framing on the interface must match that on the switch for this ATM link.
The following example specifies G.832 ADM framing on a router that has been set up with E3 access to an ATM network:
interface atm 4/0 atm framing g832adm
To specify the cable length (line build-out) for the ATM interface, use the atm lbo interface configuration command. To return to the default, use the no form of this command.
atm lbo {long | short}| long | Specifies a cable length greater than 50 feet. |
| short | Specifies a cable length of less than 50 feet. This is the default. |
short
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA.
The following example specifies that the ATM interface use a cable less than 50 feet:
interface atm 4/0 atm lbo short
To configure the AAL1 timing recovery clock for the CBR interface, use the ces aal1 clock interface configuration command. To return the clock to the default, use the no form of this command.
ces aal1 clock {adaptive | srts | synchronous}| adaptive | Adjusts output clock on a received AAL1 on first-in, first-out basis. Use in unstructured mode. |
| srts | Sets the clocking mode to synchronous residual time stamp. |
| synchronous | Configures the timing recovery to synchronous for structured mode. |
synchronous
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The clock mode must be synchronous for structured mode. In unstructured mode, use adaptive when a network-derived clock is not available.
Use srts when a network-derived clock is available but devices attached to the CES port use a different clock reference. The srts keyword samples the incoming clock, subtracts from the network clock, and sends the remainder in an AAL1 header. The clock is reconstructed during output by adding the residual to the network reference.
Use synchronous for all other modes.
The following command sets the AAL1 timing recovery clock to adaptive mode.
interface cbr 4/0 ces aal1 clock adaptive
ces aal1 service
ces dsx1 clock source
network-clock-select
To configure the type of circuit emulation service used on the CBR interface, use the ces aal1 service interface configuration command.
ces aal1 service {structured | unstructured}| structured | Sets the type of service to structured (cross-connect). |
| unstructured | Sets the type of service to unstructured (clear-channel). |
unstructured
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The structured keyword means that each time slot is an independent entity grouped into circuits, where each circuit has an independent PVC.
The unstructured keyword reduces the incoming serial data on the receiving end of the ATM network. The keyword also sets the service to single circuit, single PVC, where all time slots are carried.
The following example changes the mode for the ces aal1 service command to structured.
interface cbr 4/0 ces aal1 service structured
ces aal1 clock
ces circuit
ces dsx1 clock source
ces dsx1 framing
ces dsx1 lbo
ces dsx1 linecode
ces dsx1 loopback
ces dsx1 signalmode robbedbit
ces pvc
show ces circuit
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To configure the connection attributes for the CBR interface, use the ces circuit interface command. To return the connection attributes to the default or to enable the circuit, use the no form of this command.
ces circuit circuit-number [cas] [cdv range] [circuit-name name] [on-hook-detection| circuit-number | Selects the circuit identification. For unstructured service, use 0. For T1 structured service, the range is 1 through 24. For E1 structure service, the range is 1 through 31. |
| cas | (Optional) Enables channel associated signaling for structured service only. The default is no cas. |
| cdv range | (Optional) Enables the peak-to-peak cell delay variation requirement. The range for CDV is 1 through 65535 milliseconds. The default is 2000 milliseconds. |
| circuit-name name | (Optional) Sets the ASCII name for the CES-IWF circuit. The string for the circuit name is 0 through 255. The default is CBRx/x:0. |
| on-hook-detection hex-number | (Optional) Enables detection of whether the circuit is on-hook. Hex values are 0 through F to indicate a 2- or 4-bit AB[CD] pattern to detect on-hook. The AB[CD] bits are determined by the manufacturer of the voice/video telephony device that is generating the CBR traffic. |
| partial-fill range | (Optional) Enables the partial AAL1 cell fill service for structured service only. The range is 0 through 47. The default is 47. |
| shutdown | (Optional) Marks the CES-IWF circuit administratively down. The default is no shutdown. |
| timeslots range | (Optional) Configures the time slots for the CES-IWF circuit for structured service only. The range is 1 through 24 for T1. The range is 1 through 31 for E1. |
No circuit is configured.
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
For unstructured service, the circuit number is 0. For T1 structured service, the circuit number is 1 through 24. For E1 structured service, the time slots are 1 through 31.
Channel-associated signaling (CAS) provides information about the time slot (on or off the hook) and is updated once per multiframe.
With both the CAS and on-hook detection features enabled, these features work together to enable an ingress node in an ATM network to monitor on-hook and off-hook conditions for a specified 1 x 64 structured CES circuit. As implied by the notation "1 x 64," the on-hook detection (or bandwidth-release) feature is supported only in a structured CES circuit that involves a single time slot at each end of the connection.
The time slot configured for the structured CES circuit at the ingress node (time slot 2) can be different from the DS0 time slot configured at the egress node (time slot 4). Only one such time slot can be configured at each end of the circuit when the on-hook detection feature is used.
When you invoke the on-hook feature, the ingress ATM-CES port adapter monitors the ABCD bits in the incoming CBR bit stream to detect on-hook and off-hook conditions in the circuit. In an "off-hook" condition, all the bandwidth provisioned for the specified CES circuit is used for transporting ATM AAL1 cells across the network from the ingress node to the egress node.
In an on-hook condition, the network periodically sends dummy ATM cells from the ingress node to the egress node to maintain the connection. However, these dummy cells consume only a fraction of the circuit's reserved bandwidth, leaving the rest of the bandwidth available for use by other network traffic. This bandwidth-release feature enables the network to make more efficient use of its resources.
When the CAS feature is enabled for a CES circuit, the bandwidth of the DS0 channel is limited to 56 kbps for user data, because CAS functions consume 8 kbps of channel bandwidth for transporting the ABCD signaling bits. These signaling bits are passed transparently from the ingress node to the egress node as part of the ATM AAL1 cell stream.
In summary, when the optional CAS and on-hook detection features are enabled, the following conditions apply:
The following example sets the structured service CDV range to 5000 milliseconds and enables the interface.
interface cbr 4/0 ces circuit 3 cdv 5000 ces circuit 3 no shutdown
ces aal1 service
show ces circuit
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To configure a transmit clock source for the CBR interface, use the ces dsx1 clock source interface configuration command. To return the clock source to the default, use the no form of this command.
ces dsx1 clock source {loop-timed | network-derived}| loop-timed | Configures the transmit clock to loop (RX-clock to TX-clock). |
| network-derived | Configures the transmit clock to be derived from the network. |
network-derived
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
Use the command to configure the transmit clock source to the ATM-CES port adapter.
The following example sets the clock source to loop-timed.
interface cbr 4/0 ces dsx1 clock source loop-timed
ces aal1 clock
ces aal1 service
network-clock-select
show ces circuit
show ces interface cbr
show interface cbr
To select the frame type for the data line on the CBR interface, use the ces dsx1 framing interface configuration command. To return the frame type to the default, use the no form of this command.
ces dsx1 framing {esf | sf} (for T1)| esf | Configures the line type to extended super frame for T1. This is the default for T1. |
| sf | Configures the line type to super frame for T1. |
| e1_crc_mfCASlt | Configures the line type to E1 CRC with channel-associated signaling (CAS) enabled. |
| e1_crc_mf_lt | Configures the line type to E1 CRC with CAS disabled. |
| e1_lt | Configures the line type to E1 with CAS disabled. This is the default for E1. |
| e1_mfCAS_lt | Configures the line type to E1 with CAS enabled. |
esf (for T1)
e1_lt (for E1)
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
Use this command in configurations where the router communicates with the data line. The service provider determines which framing type is required for your circuit.
The following example sets the data line type to super frame.
interface cbr 4/0 ces dsx1 framing sf
ces aal1 service
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To configure cable length for the CBR interface, use the ces dsx1 lbo interface configuration command. To return the cable length to the default, use the no form of this command.
ces dsx1 lbo length| length | Sets the cable length. Values are (in feet): 0_110, 110_200, 220_330, 330_440, 440_550, 550_660, 660_above, and square_pulse. The default is 0_110 feet. |
0_110 feet
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
Set the cable length to the desired number of feet on your system.
The following example sets the cable length to 440 feet:
interface cbr 4/0 ces dsx1 lbo 440_550
atm lbo
ces aal1 service
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To select the linecode type for the CBR interface, use the ces dsx1 linecode interface configuration command. To return the linecode to the default, use the no form of this command.
ces dsx1 linecode {ami | b8zs} (for T1)| ami | Specifies the alternate mark inversion (AMI) as the linecode type. Valid for T1 and E1 interfaces. |
| b8zs | Specifies B8ZS as the linecode type. Valid for T1 interfaces. This is the default for T1. |
| hdb3 | Specifies HDB3 as the linecode type. Valid for E1 interfaces. This is the default for E1. |
b8zs (for T1)
hdb3 (for E1)
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
Use this command in configurations where the switch communicates with the data line. The service provider determines which linecode type is required for your circuit.
The following example specifies B8ZS as the linecode type:
interface cbr 4/0 ces dsx1 linecode b8zs
ces aal1 service
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To enable a loopback for the CBR interface, use the ces dsx1 loopback interface configuration command. To disable the loopback, use the no form of this command.
ces dsx1 loopback {line | noloop | payload}| line | Sets the received signal to be looped at the line (does not penetrate the line). |
| noloop | Sets the interface to no loop. |
| payload | Sets the received signal to be looped through the device and returned. |
No loopback is set.
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
This command is useful when testing the circuit emulation port adapter module.
The following example sets a payload loopback:
interface cbr 4/0 ces dsx1 loopback payload
ces aal1 service
loopback
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To enable the signal mode as robbed bit on a CBR interface, use the ces dsx1 signalmode robbedbit interface configuration command. To return the signal mode to the default, use the no form of this command.
ces dsx1 signalmode robbedbit
no ces dsx1 signalmode robbedbit
This command has no keywords or arguments.
No signal mode is enabled.
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
A T1 frame consists of 24 time slots (DS0) that send at a rate of 64 kbps. T1 defines the ability to send signaling in-band on individual time slots by removing the low bit of each byte for signaling in robbedbit mode. This procedure allows 8 kbps for signaling and leaves 56 kbps for data.
In structured mode, you can send the T1 signaling information across the network. This means that after you enable robbedbit signaling mode on the port, and enable CAS on individual circuits that need this type of service, you are robbing bits from the DS0. The system then puts the bits in the specified format to be sent across the network and reinserts them at the passive side on the CES-IWF connection.
The following example enables channel associated signaling and robbed bit signaling:
interface cbr 4/0 ces circuit 1 cas ces dsx1 signalmode robbedbit
ces aal1 service
ces circuit
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To configure the destination port for the circuit on the CBR interface, use the ces pvc interface configuration command. To remove the destination port on the circuit, use the no form of this command.
ces pvc circuit-number {interface atm slot/port vci number vpi number}| circuit-number | Selects the circuit identification. The range is 0 to 24. For unstructured service, use 0. For T1 structure service, the range is 1 through 24. For E1 structure service, the range is 1 through 31. |
| interface atm slot/port | Slot and port number of the ATM interface. Used to create a hard PVC. Only a hard PVC can be configured for the CBR interfaces on the ATM-CES port adapter. |
| vci number | Virtual channel identifier of the destination PVC. Range is 1 through 16383. |
| vpi number | Virtual path identifier of the destination PVC. Range is 0 through 255. |
No destination port is configured.
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
Use the interface option to create a hard PVC. Use the dest-atm-addr option to create a soft PVC. Soft PVCs are not supported on Cisco 7200 series routers.
You must configure both sides of the CES circuits because at the source (the active side in CES-IWF), the time slots are not recognized at the destination (the passive side).
Each CES circuit has an ATM address. When configuring the source PVC, you need the destination ATM address.
The following example shows setting a hard PVC. In this example, the destination of ATM port 0 in slot 1 is assigned to circuit 31 on CBR port 0 in slot 4.
interface cbr 4/0 ces pvc 31 interface atm 1/0 vpi 0 vci 512
ces aal1 service
show ces circuit
show ces circuit
show ces interface cbr
show ces status
show interface cbr
To specify the T1 or E1 constant bit rate interface on an ATM-CES port adapter, and enter interface configuration mode, use the interface cbr global configuration command.
interface cbr slot/port| slot | Backplane slot number. |
| port | Interface port number. |
None
Global configuration
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The ATM-CES port adapter has four T1 (1.544 Mbps) or four E1 (2.048 Mbps) ports (75- or 120-ohm) that can support both structured (N x 64 kbps) and unstructured ATM Forum-compliant circuit emulation services (CES), and one port that supports an OC-3 (155 Mbps) single-mode intermediate reach interface or a T3 (45 Mbps) or E3 (34 Mbps) standards-based ATM interface.
The following example specifies the first T1 or E1 port on the ATM-CES port adapter in slot 1:
interface cbr 1/0
show ces interface cbr
show interface cbr
To place the ATM interface into loopback mode, use the following form of the loopback interface configuration command. To remove the loopback, use the no form of this command.
loopback [cell | diagnostic | line | payload | test]| cell | (Optional) Places the interface into external loopback at cell level |
| diagnostic | (Optional) Places the interface into internal loopback at the PLIM. |
| line | (Optional) Places the interface into external loopback at the line. This is the default. |
| payload | (Optional) Places the interface into external loopback at the payload level. |
| test | (Optional) Places the ATM interface into external special test loopback. |
line; packets loop from the ATM interface back to the ATM network.
Interface configuration
This command was modified in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
This command is useful for testing because it loops all packets from the ATM interface back to the interface as well as directing the packets to the network.
The following example loops all packets back to the ATM interface:
interface atm 4/0 loopback diagnostic
To establish the sources and priorities of the requisite clocking signals for an ATM-CES port adapter, use the network-clock-select global configuration command. To remove the clock source, use the no form of this command.
network-clock-select priority {cbr | atm} slot/port| priority | Specifies the priority of the clock source. Values are 1 (highest priority) to 4 (lowest priority). |
| cbr | Specifies a CBR interface to supply the clock source. |
| atm | Specifies an ATM interface to supply the clock source. |
| slot | Backplane slot number. |
| port | Interface port number. |
No priority clock source is established.
Global configuration
This command first appeared in Cisco IOS Release 11.1 CA.
To support synchronous or synchronous residual time stamp (SRTS) clocking modes on the CBR interface, you must specify a primary reference source to synchronize the flow of CBR data from its source to its destination.
You can specify up to four clock priorities. The highest priority active interface in the router supplies primary reference source to all other interfaces that require network clock synchronization services. The fifth priority is the local oscillator on the ATM-CES port adapter.
Use the show network-clocks command to display the currently configured clock priorities on the router.
The following example defines two clock priorities on the router:
network-clock-select 1 cbr 2/0 network-clock-select 2 atm 2/0
ces aal1 clock
ces dsx1 clock source
show network-clocks
To display ATM-specific information about an ATM interface, use the show atm interface atm privileged EXEC command.
show atm interface atm slot/port| slot/port | Slot number and port number of the interface. |
Privileged EXEC
This command was modified in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The following is sample output from the show atm interface atm command to display statistics on slot 4, port 0:
Router# show atm interface atm 4/0
ATM interface ATM4/0:
AAL enabled: AAL5, Maximum VCs: 1024, Current VCs: 6
Tx buffers 256, Rx buffers 256, Exception Queue: 32, Raw Queue: 32
VP Filter: 0x7B, VCIs per VPI: 1024, Max Datagram Size:4496, MIDs/VC:16
PLIM Type:4B5B - 100Mbps, No Framing, TX clocking: LINE
4897 input, 2900 output, 0 IN fast, 0 OUT fast
Rate-Queue 1 set to 100Mbps, reg=0x4EA DYNAMIC, 1 VCCs
ATM4/0.1:AAL3/4-SMDS address c111.1111.1111 Multicast e222.2222.222
Config. is ACTIVE
Table 4 describes the fields shown in the display.
| Field | Description |
|---|---|
| ATM interface | Slot and port number of the interface. |
| AAL enabled | Type of AAL. If both AAL5 and AAL3/4 are enabled on the interface, the output will include both AAL5 and AAL3/4. |
| Maximum VCs | Maximum number of virtual circuits this interface can support. |
| Current VCs | Number of active virtual circuits. |
| Tx buffers, Rx buffers | Number of transmit and receive buffers. |
| Exception Queue | Number of exception buffers. |
| Raw Queue | Queue size. |
| VP Filter | Hexadecimal value of the VP filter. |
| VCIs per VPI | Maximum number of VCIs to support per VPI. |
| Max Datagram Size | The configured maximum number of bytes in the largest datagram. |
| MIDs/VC | The configured maximum number of message identifiers allowed per virtual circuit on this interface. |
| PLIM Type | Physical Layer Interface Module (PLIM) type (E3, 4B/5B, or SONET). |
| Framing | For E3, this might be G.804; otherwise, no framing. |
| TX clocking | Clocking on the router. For E3 or SONET, this might be INTERNAL, meaning the AIP or NPM generates the clock. Otherwise, LINE indicates that the ATM switch provides the clocking. |
| input | Number of packets received and process-switched. |
| output | Number of packets sent from process switch. |
| IN fast | Number of input packets fast-switched. |
| OUT fast | Number of output packets fast-switched. |
| Rate-Queue | List of configured rate queues. |
| reg= | Actual register value passed to the AIP to define a specific rate queue (AIP only). |
| DYNAMIC | Indicates that the rate queue is dynamic and was created automatically by the software. Dynamic rate queues are created when an atm pvc command specifies a peak or average rate that does not match any user configured rate queue. The value PERMANENT indicates that the rate queue was user-configured. |
| VCCs | Number of virtual channel connections (VCCs) dynamically attached to this rate queue. |
| ATM4/0.1 | Indicates that the subinterface supports ATM adaptation layer AAL3/4 and displays the SMDS E.164 unicast address and the SMDS E.164 multicast address assigned to the subinterface. |
| Config. is | ACTIVE or VALID in n SECONDS. ACTIVE indicates that the current AIP or NPM configuration has been loaded into the AIP and is being used. There is a 5-second window when a user changes a configuration and the configuration is sent to the AIP. |
atm pvc
To display the list of all configured ATM static maps to remote hosts on an ATM network, use the show atm map privileged EXEC command.
show atm mapThis command has no arguments or keywords.
Privileged EXEC
This command was modified in Cisco IOS Release 11.1 CA to include a sample display for the ATM-CES port adapter.
The following is sample output from the show atm map command for an ATM-CES port adapter on the Cisco 7200 series router.
Router# show atm map
Map list alien: PERMANENT
ip 128.1.1.1 maps to VC 6
ip 128.1.1.2 maps to VC 6
Table 5 describes the fields shown in the display.
| Field | Description |
|---|---|
| Map list | Name of map list. |
| PERMANENT | This map entry was entered from configuration; it was not entered automatically by a process. |
| protocol address maps to VC x | Name of protocol, the protocol address, and the VCD that the address is mapped to. |
atm pvc
map-list
To display current, global ATM traffic information to and from all ATM networks connected to the router, use the show atm traffic privileged EXEC command.
show atm trafficThis command has no arguments or keywords.
Privileged EXEC
This command was modified in Cisco IOS Release 11.1 CA to include a sample display for the ATM-CES port adapter.
The following is sample output from the show atm traffic command for an ATM-CES port adapter on the Cisco 7200 series router.
Router# show atm traffic
0 Input packets
1044 Output packets
1021 Broadcast packets
0 Packets received on non-existent VC
0 Packets attempted to send on non-existent VC
0 OAM cells received
0 OAM cells sent
Table 6 describes the fields shown in the display.
| Field | Description |
|---|---|
| Input packets | Total packets input. |
| Output packets | Total packets output (nonbroadcast). |
| Broadcast packets | Total broadcast packets output. |
| Packets received on nonexistent VC | Packets received on virtual circuits not configured. |
| Packets attempted to send on nonexistent VC | Packets that were attempted to be sent on a virtual circuit that was not configured. |
| OAM cells received | Total Operation, Administration, and Maintenance (OAM) cells received. |
| Cells sent | Total cells sent. |
atm pvc
To display all active ATM virtual circuits (PVCs and SVCs) and traffic information, use the show atm vc privileged EXEC command.
show atm vc [vcd]| vcd | (Optional) Specifies which virtual circuit to display information about. |
Privileged EXEC
This command was modified in Cisco IOS Release 11.1 CA to include a sample display for the ATM-CES port adapter.
If no vcd value is specified, the command displays information for all PVCs and SVCs. The output is in summary form (one line per virtual circuit).
The following is sample output from the show atm vc command when no vcd value is specified, displaying statistics for all PVCs for an ATM-CES port adapter on a Cisco 7200 series router. The status field is either ACTIVE or INACTIVE.
Router# show atm vc
AAL / Peak Avg. Burst
Interface VCD VPI VCI Type Encapsulation Kbps Kbps Cells Status
ATM6/0 1 0 16 PVC AAL5-ILMI 155000 155000 94 ACTIVE
ATM6/0 2 0 5 PVC AAL5-SAAL 155000 155000 94 ACTIVE
ATM6/0.1 303 0 282 SVC LANE-LES 155000 155000 32 ACTIVE
ATM6/0.1 304 0 281 SVC LANE-LEC 155000 155000 32 ACTIVE
ATM6/0.1 307 0 286 MSVC LANE-LEC 155000 155000 32 ACTIVE
ATM6/0.1 308 0 285 MSVC LANE-LES 155000 155000 32 ACTIVE
ATM6/0.1 309 0 288 SVC LANE-BUS 155000 155000 32 ACTIVE
ATM6/0.1 310 0 287 SVC LANE-LEC 155000 155000 32 ACTIVE
ATM6/0.1 311 0 290 MSVC LANE-LEC 155000 155000 32 ACTIVE
ATM6/0.1 312 0 289 MSVC LANE-BUS 155000 155000 32 ACTIVE
ATM6/0.1 314 0 292 SVC LANE-LES 155000 155000 32 ACTIVE
ATM6/0.1 315 0 293 SVC LANE-BUS 155000 155000 32 ACTIVE
The following is sample output from the show atm vc command when a vcd value is specified, displaying statistics for that virtual circuit only.
Router# show atm vc 8
ATM4/0: VCD: 8, VPI: 8, VCI: 8, etype:0x0, AAL5 - LLC/SNAP, Flags: 0x30
PeakRate: 0, Average Rate: 0, Burst: 0 *32cells, VCmode: 0xE000
InPkts: 181061, OutPkts: 570499, InBytes: 757314267, OutBytes: 2137187609
InPRoc: 181011, OutPRoc: 10, Broadcasts: 570459
InFast: 39, OutFast: 36, InAS: 11, OutAS: 6
The following is sample output from the show atm vc command when generation of OAM F5 loopback cells has been enabled.
Router# show atm vc 7
ATM4/0: VCD: 7, VPI: 7, VCI: 7, etype:0x0, AAL5 - LLC/SNAP, Flags: 0x30
PeakRate: 0, Average Rate: 0, Burst: 0 *32cells, VCmode: 0xE000
OAM frequency: 10, InARP DISABLED
InPkts: 0, OutPkts: 0, InBytes: 0, OutBytes: 0
InPRoc: 0, OutPRoc:0, Broadcast:0
InFast:0, OutFast:0, InAS:0, OutAS:0
OAM F5 cells sent: 1, OAM cells received: 0
The following is sample output from the show atm vc command for an incoming multipoint virtual circuit.
Router# sh atm vc 3
ATM2/0: VCD: 3, VPI: 0, VCI: 33, etype:0x809B, AAL5 - MUX, Flags: 0x53
PeakRate: 0, Average Rate: 0, Burst: 0, VCmode: 0xE000
OAM DISABLED, InARP DISABLED
InPkts: 6646, OutPkts: 0, InBytes: 153078, OutBytes: 0
InPRoc: 6646, OutPRoc: 0, Broadcasts: 0
InFast: 0, OutFast: 0, InAS: 0, OutAS: 0
interface = ATM2/0, call remotely initiated, call reference = 18082
vcnum = 3, vpi = 0, vci = 33, state = Active
aal5mux vc, multipoint call
Retry count: Current = 0, Max = 10
timer currently inactive, timer value = never
Root Atm Nsap address: DE.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
The following is sample output from the show atm vc command for an outgoing multipoint virtual circuit.
Router# sh atm v 6
ATM2/0: VCD: 6, VPI: 0, VCI: 35, etype:0x800, AAL5 - MUX, Flags: 0x53
PeakRate: 0, Average Rate: 0, Burst: 0, VCmode: 0xE000
OAM DISABLED, InARP DISABLED
InPkts: 0, OutPkts: 818, InBytes: 0, OutBytes: 37628
InPRoc: 0, OutPRoc: 0, Broadcasts: 818
InFast: 0, OutFast: 0, InAS: 0, OutAS: 0
interface = ATM2/0, call locally initiated, call reference = 3
vcnum = 6, vpi = 0, vci = 35, state = Active
aal5mux vc, multipoint call
Retry count: Current = 0, Max = 10
timer currently inactive, timer value = never
Leaf Atm Nsap address: DE.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
Leaf Atm Nsap address: CD.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
Table 7 describes the fields shown in the displays.
| Field | Description |
|---|---|
| Intfc. | Interface slot and port. |
| VCD | Virtual circuit descriptor (virtual circuit number). |
| VPI | Virtual path identifier. |
| VCI | Virtual channel identifier. |
| Type | Type of virtual circuit, either PVC or SVC. |
| AAL/Encaps | Type of ATM adaptation layer (AAL) and encapsulation. |
| etype | Ethernet type. |
| Flags | Bit mask describing virtual circuit information. The flag values are summed to result in the displayed value.
0x40 SVC 0x20 PVC 0x10 ACTIVE 0x1 AAL5-SNAP 0x3 AAL5-FRNLPID 0x4 AAL5-MUX 0x5 AAL3/4-SMDS 0x6 QSAAL |
| PeakRate | Number of packets transmitted at the peak rate. |
| Average Rate | Number of packets transmitted at the average rate. |
| Burst | Value that, when multiplied by 32, equals the maximum number of ATM cells the virtual circuit can transmit at the peak rate of the virtual circuit. |
| VCmode | AIP-specific or NPM-specific register describing the usage of the virtual circuit. Contains values such as rate queue, peak rate, and AAL mode, which are also displayed in other fields. |
| InPkts | Total number of packets received on this virtual circuit. This number includes all silicon-switched, fast-switched, autonomous-switched, and process-switched packets. |
| OutPkts | Total number of packets sent on this virtual circuit. This number includes all silicon-switched, fast-switched, autonomous-switched, and process-switched packets. |
| InBytes | Total number of bytes received on this virtual circuit. This number includes all silicon-switched, fast-switched, autonomous-switched, and process-switched bytes. |
| OutBytes | Total number of bytes sent on this virtual circuit. This number includes all silicon-switched, fast-switched, autonomous-switched, and process-switched bytes. |
| InPRoc | Number of process-switched input packets. |
| OutPRoc | Number of process-switched output packets. |
| Broadcast | Number of process-switched broadcast packets. |
| InFast | Number of fast-switched input packets. |
| OutFast | Number of fast-switched output packets. |
| InAS | Number of autonomous-switched or silicon-switched input packets. |
| OutAS | Number of autonomous-switched or silicon-switched output packets. |
| OAM frequency: 10 | OAM cells are sent every 10 seconds. |
| OAM F5 cells sent: 1 | Number of OAM cells sent on this virtual circuit. |
| OAM cells received: 0 | Number of OAM cells received on this virtual circuit. |
atm pvc
To show detailed circuit information for the CBR interface, use the show ces circuit privileged EXEC command.
show ces circuit [interface cbr slot/port [circuit-number]]| interface cbr slot/port | (Optional) Slot and port number of the CBR interface. |
| circuit-number | (Optional) Circuit identification. For unstructured service, use 0. For T1 structure service, the range is 1 through 24. For E1 structure service, the range is 1 through 31. |
Privileged EXEC
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The following is sample output from the show ces circuit command.
Switch# show ces circuit
Interface Circuit Circuit-Type X-interface X-vpi X-vci Status
CBR6/0 1 HardPVC ATM6/0 0 34 UP
CBR6/1 1 HardPVC ATM6/1 0 34 UP
Table 8 describes the fields shown in the display.
| Field | Description |
|---|---|
| Interface | Type, slot, and port number of the interface. |
| Circuit | Circuit number assigned to the PVC. |
| Circuit-Type | Type of circuit.Values are HardPVC or SoftPVC. Only HardPVC is supported on the ATM-CES port adapter. |
| X-interface | Type, slot, and port number of the destination interface. |
| X-vpi | Virtual path identifier of the destination interface. |
| X-vci | Virtual channel identifier of the destination interface. |
| Status | State of the circuit. Values are Up or Down. |
The following is sample output from the show ces circuit command for a circuit 1 on CBR interface 6/0.
Switch# show ces circuit interface cbr 6/0 1
circuit: Name CBR6/0:1, Circuit-state ADMIN_UP / Interface CBR6/0, Circuit_id 1,
Port-Type T1, Port-State UP
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_Sync
Channel in use on this port: 1
Channels used by this circuit: 1
Cell-Rate: 171, Bit-Rate 64000
cas OFF, cell-header 0X3E80 (vci = 1000)
Configured CDV 2000 usecs, Measured CDV unavailable
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth 128, startDequeueDepth 111
Partial Fill: 47, Structured Data Transfer 24
HardPVC
src: CBR6/0 vpi 0, vci 16
Dst: ATM6/0 vpi0, vci 1000
Table 8 describes the fields shown in the display.
| Field | Description |
|---|---|
| circuit Name | Name of the circuit specified with the ces circuit interface command. |
| Circuit-state | Current configuration state of the circuit. Values are ADMIN_UP or ADMIN_DOWN. |
| Interface | Type, slot, and port number of the interface. |
| Circuit_ID | Circuit identification specified with the ces pvc interface command. |
| Port-Type | Type of interface on the ATM-CES port adapter. Values are T1 or E1. |
| Port-State | Current status of the port. Values are Up or Down. |
| Port Clocking | Clocking mode used by the interface specified with the ces dsx1 clock interface command. Values are Loop-Timed or Network-Derived Adaptive. |
| aal1 Clocking Method | AAL1 clocking mode used by the interface specified with the ces aal1 clock interface command. Values are Adaptive, Synchronous Residual Time Stamp (SRTS), or Synchronous. |
| Channel in use on this port | Number of active channels used by this interface. |
| Channels used by this circuit | Number of channels used by the circuit |
| Cell-Rate | Number of cells transmitted or received on the interface per second. |
| Bit-Rate | Speed at which the cells are transmitted or received. |
| cas | Indicates whether channel-associated signaling (CAS) is enabled on the interface with the ces circuit interface command. |
| cell-header | ATM cell header VCI bytes used for debugging only. |
| Configured CDV | Indicates the peak-to-peak cell delay variation (CDV) requirement (CDV) in milliseconds specified with the ces circuit interface command. The range for CDV is 1 through 65535 milliseconds. The default is 2000 milliseconds. |
| Measured CDV | Indicates the actual cell delay variation in milliseconds. |
| ErrTolerance | For internal use only. |
| idleCircuitdetect | Indicates whether idle circuit detection is enabled (ON) or disabled (OFF). |
| onHookIdleCode | Indicates that the on-hook detection feature is enabled with the ces circuit interface command and the hex value (0 through F) that indicates a 2 or 4 bit AB[CD] pattern to detect on-hook. The AB[CD] bits are determined by the manufacturer of the voice/video telephony device that is generating the CBR traffic. |
| state | Current state of the circuit. Values are VcActive, VcInactive, VcLOC (loss of cell), or VcAlarm (alarm condition). |
| maxQueueDepth | Maximum queue depth in bits. |
| startDequeueDepth | Start dequeue depth in bits. |
| Partial Fill | Indicates the partial AAL1 cell fill service for structured service only specified by the ces circuit interface command. The range is 0 through 47. The default is 47. |
| Structured Data Transfer | Size (in bytes) of the structured data transfer frame. |
| HardPVC | Only hard PVC are supported by the ATM-CES port adapter. |
| src | Source interface type, slot, and port number and VPI and VCI for the circuit. |
| Dst | Destination interface interface type, slot, and port number and the VPI and VCI for the circuit. |
show ces circuit
show ces status
To show detailed CBR port information, use the show ces interface cbr privileged EXEC command.
show ces interface cbr slot/port| slot | Backplane slot number. |
| port | Interface port number. |
Privileged EXEC
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The following is sample output from the show ces circuit command for CBR interface 6/0.
router# show ces interface cbr 6/0
Interface: CBR6/0 Port-type:T1-DCU
IF Status: UP Admin Status: UP
Channels in use on this port: 1
LineType: ESF LineCoding: B8ZS LoopConfig: NoLoop
SignalMode: NoSignalling XmtClockSrc: network-derived
DataFormat: Structured AAL1 Clocking Mode: Synchronous LineLength: 0_110
LineState: LossOfSignal
Errors in the Current Interval:
PCVs 0 LCVs 0 ESs 0 SESs 0 SEFSs 0
UASs 0 CSSs 0 LESs 0 BESs 0 DMs 0
Errors in the last 24Hrs:
PCVs 514 LCVs 0 ESs 0 SESs 1 SEFSs 0
UASs 0 CSSs 0 LESs 0 BESs 0 DMs 0
Input Counters: 0 cells, 0 bytes
Output Counters: 0 cells, 0 bytes
Table 10 describes the fields shown in the display.
| Field | Description |
|---|---|
| Interface | Type, slot, and port number of the interface. |
| Port-type | Type of port on the ATM-CES port adapter. Values are: T1-DCU or E1-DCU. |
| IF Status | Status of the interface. Values are Up or Down. |
| Admin Status | Configured status of the interface. Values are Up or Down (administratively configured down). |
| Channels in use on this port | Number of active channels used by this interface. |
| LineType | Framing used on the interface specified with the ces dsx1 framing interface command. Values are ESF or SF for T1 and E1-CRC-MFCASLT, E1-CRC-MFLT, E1-LT, or E1-MFCASLT for E1. |
| LineCoding | Line coding used on the interface specified with the ces dsx1 linecode interface command. Values are AMI, B8ZS (for T1), and HDB3 (for E1). |
| LoopConfig | Indicates whether the interface in in a loop state specified by the ces dsx1 loopback interface command. Values are line loopback, payload loopback, or noloop. |
| SignalMode | For T1 to use robbed bit signaling or not. |
| XmitClockSrc | Transmit clock source specified by the ces dsx1 clock interface command. Values are loop-timed or network-derived. |
| DataFormat | Type of CES services specified by the ces aal1 service interface command. Values are structured or unstructured. |
| AAL1 Clocking Mode | AAL1 clocking mode used by the interface specified with the ces aal1 clock interface command. Values are adaptive, synchronous residual time stamp (SRTS), or synchronous. |
| LineLength | Cable length specified by the ces dsx1 lbo interface command. Values are 0-110, 10-200, 220-330, 330-440, 440-550, 550-660, 660-above, and square-pulse. |
| LineState | Current status of the line. Values are:
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Errors in the Current Interval | Error statistics received during the current 15-minute interval. |
| PCVs | Number of Path Code Violations (PCVs). PCVs indicate a frame synchronization bit error in the D4 and E1 no-CRC formats, or a CRC error in the ESF and E1 CRC formats. |
| LCVs | Number of Line Code Violations (LCVs). LCVs indicate the occurrence of either a Bipolar Violation (BPV) or Excessive Zeros (EXZ) error event. |
| ESs | Number of errored seconds. In ESF and E1 CRC links, an Errored Second is a second in which one of the following are detected: one or more Path Code Violations, one or more Out of Frame defects, one or more Controlled Slip events, or a detected AIS defect.
For SF and E1 no-CRC links, the presence of Bipolar Violations also triggers an Errored Second. |
| SESs | Number of Severely Errored Seconds (SESs). A SESs is a second with 320 or more path code violation errors events, one or more Out of Frame defects, or a detected AIS defect. |
| SEFSs | Number of Severely Errored Framing Seconds (SEFS). SEFS is a second with one or more Out of Frame defects or a detected incoming AIS. |
| UASs | Number of Unavailable Seconds (UASs). UAS is a count of the total number of seconds on the interface. |
| CSSs | Number of Controlled Slip Second (CSS). CSS is a 1-second interval containing one or more controlled slips. |
| LESs | Number of Line Errored Seconds (LES). LES is a second in which one or more Line Code Violation errors are detected. |
| BESs | Number of Bursty Errored Seconds (BES). BES is a second with fewer than 320 and more than one Path Coding Violation error, no Severely Errored Frame defects, and no detected incoming AIS defects. Controlled slips are not included in this parameter. |
| DMs | Number of Degraded Minutes (DMs). A degraded minute is one in which the estimated error rate exceeds 1E-6 but does not exceed 1E-3. For more information, refer to RFC 1406. |
| Errors in the last 24Hrs | Error statistics received during the during the last 24 hours. |
| Input Counters | Number of cells and bytes received on the interface. |
| Output Counters | Number of cells and bytes. |
To display the status of the ports on the ATM-CES port adapter, use the show ces status privileged EXEC command.
show ces statusThis command has no keywords or arguments.
Privileged EXEC
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The following is sample output from the show ces status command. This output shows the interface name, the status of the interface, the administrative status of the interface, the port type, and the number of channels in use on the interface. The status of the interface can be UP (in operation) or DOWN (not in operation).
Router# show ces status
Interface IF Admin Port Channels in
Name Status Status Type use
------------- -------- --------- ----------- -----------
CBR0/0/0 UP UP T1 1-24
CBR0/0/1 UP UP T1 1-24
CBR0/0/2 UP UP T1 1-24
CBR0/0/3 UP UP T1
To display the information about the constant bit rate (CBR) interface on the ATM-CES port adapter, use the show interface cbr privileged EXEC command.
show interface cbrThis command has no keywords or arguments.
Privileged EXEC
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The following is sample output from the show interface cbr command.
Switch# show interface cbr 6/0
CBR6/0 is up, line protocol is up
Hardware is DCU
MTU 0 bytes, BW 1544 Kbit, DLY 0 usec, rely 255/255, load 248/255
Encapsulation ET_ATMCES_T1, loopback not set
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/0, 0 drops; input queue 0/75, 0 drops
5 minute input rate 1507000 bits/sec, 3957 packets/sec
5 minute output rate 1507000 bits/sec, 3955 packets/sec
3025960 packets input, 142220120 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
3030067 packets output, 142413149 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
Table 11 describes the fields shown in the display.
| Field | Description |
|---|---|
| CBR6/0 is... | Type, slot, and port number of the interface and indicates whether the interface hardware is currently active (whether carrier detect is present), down, or if it has been taken down by an administrator. |
| line protocol is... | Indicates whether the software processes that handle the line protocol think the line is usable (that is, whether keepalives are successful). Values are up, down, or administratively down. |
| Hardware is... | Hardware type. |
| MTU | Maximum transmission unit of the interface. |
| BW | Bandwidth of the interface in kilobits per second. |
| DLY | Delay of the interface in microseconds. |
| rely | Reliability of the interface as a fraction of 255 (255/255 is 100% reliability), calculated as an exponential average over 5 minutes. |
| load | Load on the interface as a fraction of 255 (255/255 is completely saturated), calculated as an exponential average over 5 minutes. The calculation uses the value from the bandwidth interface configuration command. |
| Encapsulation | Encapsulation method assigned to interface. |
| loopback not set | Indicates whether or not loopback is set. |
| Last input | Number of hours, minutes, and seconds since the last packet was successfully received by an interface. Useful for knowing when a dead interface failed. |
| Last output | Number of hours, minutes, and seconds since the last packet was successfully transmitted by an interface. |
| output hang | Number of hours, minutes, and seconds (or never) since the interface was last reset because of a transmission that took too long. When the number of hours in any of the "last" fields exceeds 24 hours, the number of days and hours is printed. If that field overflows, asterisks are printed. |
| Last clearing | The time at which the counters that measure cumulative statistics (such as number of bytes transmitted and received) shown in this report were last reset to zero. Note that variables that might affect routing (for example, load and reliability) are not cleared when the counters are cleared.
*** indicates the elapsed time is too large to be displayed. |
| Queueing strategy | First-in, first-out queuing strategy (other queueing strategies you might see are priority-list, custom-list, and weighted fair). |
| Output queue, drops input queue, drops | Number of packets in output and input queues. Each number is followed by a slash, the maximum size of the queue, and the number of packets dropped due to a full queue. |
| 5 minute input rate, 5 minute output rate | Average number of bits and packets transmitted per second in the last 5 minutes. |
| packets input | Total number of error-free packets received by the system. |
| bytes input | Total number of bytes, including data and MAC encapsulation, in the error free packets received by the system. |
| no buffer | Number of received packets discarded because there was no buffer space in the main system. Compare with ignored count. Broadcast storms on Ethernets and bursts of noise on serial lines are often responsible for no input buffer events. |
| broadcasts | Total number of broadcast or multicast packets received by the interface. |
| runts | Number of packets that are discarded because they are smaller than the medium's minimum packet size. |
| giants | Number of packets that are discarded because they exceed the medium's maximum packet size. |
| input errors | Total number of no buffer, runts, giants, CRCs, frame, overrun, ignored, and abort counts. Other input-related errors can also increment the count, so that this sum may not balance with the other counts. |
| CRC | Cyclic redundancy checksum generated by the originating LAN station or far end device does not match the checksum calculated from the data received. On a LAN, this usually indicates noise or transmission problems on the LAN interface or the LAN bus itself. A high number of CRCs is usually the result of collisions or a station transmitting bad data. On a serial link, CRCs usually indicate noise, gain hits or other transmission problems on the data link. |
| frame | Number of packets received incorrectly having a CRC error and a noninteger number of octets. |
| overrun | Number of times the serial receiver hardware was unable to hand received data to a hardware buffer because the input rate exceeded the receiver's ability to handle the data. |
| ignored | Number of received packets ignored by the interface because the interface hardware ran low on internal buffers. These buffers are different than the system buffers mentioned previously in the buffer description. Broadcast storms and bursts of noise can cause the ignored count to be incremented. |
| abort | Illegal sequence of one bits on the interface. This usually indicates a clocking problem between the interface and the data link equipment. |
| packets output | Total number of messages transmitted by the system. |
| bytes | Total number of bytes, including data and MAC encapsulation, transmitted by the system. |
| underruns | Number of times that the transmitter has been running faster than the router can handle. This may never be reported on some interfaces. |
| output errors | Sum of all errors that prevented the final transmission of datagrams out of the interface being examined. Note that this may not balance with the sum of the enumerated output errors, as some datagrams may have more than one error, and others may have errors that do not fall into any of the specifically tabulated categories. |
| collisions | Because collisions do not occur on CBR interfaces, this statistic is always zero. |
| interface resets | Number of times an interface has been reset. The interface may be reset by the administrator or automatically when an internal error occurs. |
| output buffer failures | Number of no resource errors received on the output. |
| output buffers swapped out | Number of packets swapped to DRAM. |
To show which ports are designated as network clock sources, use the show network-clocks EXEC command.
show network-clocksThis command has no keywords or arguments.
EXEC
This command first appeared in Cisco IOS Release 11.1 CA for the ATM-CES port adapter.
The following is sample output from the show network-clocks EXEC command.
Switch# show network-clocks
Priority 1 clock source: ATM3/0/0
Priority 2 clock source: System clock
Priority 3 clock source: System clock
Priority 4 clock source: System clock
Current clock source:ATM3/0/0, priority:1
The ATM UNI specification defines the required management information base (MIB) functionality for ATM interfaces. MIB attributes are readable and writable across the Interim Local Management Interface (ILMI) by using the Simple Network Management Protocol (SNMP). The ILMI uses SNMP, without UDP, and Internet Protocol (IP) addressing along with the ATM MIB.
The ATM-CES port adapter fully supports RFC 1213 and a subset of the following interface MIBS: RFC 1406, RFC 1407, and SONET MIB RFC 1595.
For RFC1406, we support DS1 Near End Group including--DS1 Configuration Table, DS1 Current Table, DS1 Interval Table, and DS1 Total Table.
For RFC1406, we do not support DS1 Far End Group and DS1 Fractional Group.
For RFC1407, we support DS3 Near End Group including--DS3/E3 Configuration Table, DS3/E3 Current Table, DS3/E3 Interval Table, and DS3/E3 Total Table.
For RFC1407, we do not support DS3 Far End Group and DS3/E3 Fractional Group.
For RFC1595, we support SONET Medium Group including--sonetMediumTable; SONET Section Group including--sonetSectionCurrentTable and sonetSectionIntervalTable; SONET Line Group including--sonetLineCurrentTable, sonetLineIntervalTable; and SONET Path Group including-- sonetPathCurrentTable and sonetPathIntervalTable.
For RFC1595, we do not support SONET Far End Line Group, SONET Far End Path Group, SONET VT Group, and SONET Far End VT Group.
For more information on the ATM-CES port adapter, refer to the PA-A2 ATM-CES Port Adapter Installation and Configuration publication. Also refer to the "PA-A2 ATM-CES Port Adapter Enhancements" section in this document.
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