PA-A1 ATM Port Adapter Installation and Configuration
Configuring the PA-A1 ATM Port Adapter
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Configuring the PA-A1 ATM

Table Of Contents

Configuring the PA-A1 ATM

Using the EXEC Command Interpreter

Configuring the Interfaces

Shutting Down an Interface

Performing a Basic Configuration

Virtual Circuits

Configuring Permanent Virtual Circuits

Creating a PVC

Mapping a Protocol Address to a PVC

Configuring Switched Virtual Circuits

Maintaining PA-A1 ATM Statistics

Checking the Configuration

Using show Commands to Verify the New Interface Status

Using the show version or show hardware Commands

Using the show diag Command

Using the show interfaces Command

Using show Commands to Display ATM Information

Using the Debug ATM Commands

ATM Configuration Examples

Example of PVCs with AAL5 and LLC/SNAP Encapsulation

Example of PVCs in a Fully Meshed Network

Example of SVCs in a Fully Meshed Network

Example of Connecting Two ATM Port Adapters Back-to-Back

Using the ping Command to Verify Network Connectivity

Configuring an ATM Interface for Local Loopback


Configuring the PA-A1 ATM


To continue your PA-A1 ATM port adapter installation, you must configure the ATM interfaces. The instructions that follow apply to all supported platforms. Minor differences among the platforms—with Cisco IOS software commands—are noted.

This chapter contains the following sections:

Using the EXEC Command Interpreter

Configuring the Interfaces

Checking the Configuration

ATM Configuration Examples

Using the EXEC Command Interpreter

You modify the configuration of your router through the software command interpreter called the EXEC (also called enable mode). You must enter the privileged level of the EXEC command interpreter with the enable command before you can use the configure command to configure a new interface or change the existing configuration of an interface. The system prompts you for a password if one has been set.

The system prompt for the privileged level ends with a pound sign (#) instead of an angle bracket (>). At the console terminal, use the following procedure to enter the privileged level:


Step 1 At the user-level EXEC prompt, enter the enable command. The EXEC prompts you for a privileged-level password as follows:

Router> enable

Password:

Step 2 Enter the password (the password is case sensitive). For security purposes, the password is not displayed.

When you enter the correct password, the system displays the privileged-level system prompt (#):

Router#


To configure the new interfaces, proceed to the "Configuring the Interfaces" section.

Configuring the Interfaces

After you verify that the new PA-A1 ATM is installed correctly (the enabled LED goes on), use the privileged-level configure command to configure the new interfaces. Have the following information available:

Protocols you plan to route on each new interface

IP addresses, if you plan to configure the interfaces for IP routing

Bridging protocols you plan to use

Whether the new interfaces will use LAN Emulation (LANE)

If you installed a new PA-A1 ATM or if you want to change the configuration of an existing interface, you must enter configuration mode to configure the new interfaces. If you replaced a PA-A1-ATM that was previously configured, the system will recognize the new interfaces and brings each of them up in their existing configuration.

For a summary of the configuration commands available and instructions for configuring interfaces on a PA-A1 ATM, refer to the appropriate configuration publications listed in the "Related Documentation" section.

You execute configuration commands from the privileged level of the EXEC command interpreter, which usually requires password access. Contact your system administrator, if necessary, to obtain password access. (See the "Using the EXEC Command Interpreter" section for an explanation of the privileged level of the EXEC.)

This section contains the following subsections:

Shutting Down an Interface

Performing a Basic Configuration

Shutting Down an Interface

Before you remove an interface that you will not replace, replace an ATM interface cable, or replace port adapters, use the shutdown command to shut down (disable) the interfaces to prevent anomalies when you reinstall the new or reconfigured interface processor. When you shut down an interface, it is designated administratively down in the show command displays.

Follow these steps to shut down an interface:


Step 1 Enter the privileged level of the EXEC command interpreter (also called enable mode). (See the "Using the EXEC Command Interpreter" section for instructions.)

Step 2 At the privileged-level prompt, enter configuration mode and specify that the console terminal will be the source of the configuration subcommands, as follows:

Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#

Step 3 Shut down interfaces by entering the interface atm subcommand (followed by the interface address of the interface), and then enter the shutdown command. Table 5-1 shows the command syntax.

When you have finished, press Ctrl-Z—hold down the Control key while you press Z—or enter end or exit to exit configuration mode and return to the EXEC command interpreter.


Note For the Cisco 7206 and Cisco 7206VXR router shelves, the interface specified in the above example would include a shelf number. For example, the command interface atm 5/2/0 would specify the first ATM interface of the port adapter in slot 2 of Cisco 7206 or 7206VXR router shelf 5. See Table 5-1.


Table 5-1 Syntax of the shutdown Command

Platform
Command
Example

Catalyst RSM/VIP2 in Catalyst 5000 family switches

interface, followed by the type (atm) and slot/port (port-adapter-slot-number/
interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 1.

Router(config)# interface atm 1/0
Router(config-if)# shutdown
Ctrl-Z
Router#

Cisco 7120 series routers

interface, followed by the type (atm) and slot/port (port-adapter-slot-number/
interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 3.

Router(config)# interface atm 3/0
Router(config-if)# shutdown
Ctrl-Z
Router#

Cisco 7140 series routers

interface, followed by the type (atm) and slot/port (port-adapter-slot-number/
interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 4.

Router(config)# interface atm 4/0
Router(config-if)# shutdown
Ctrl-Z
Router#

Cisco 7200 series routers

interface, followed by the type (atm) and slot/port (port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 2.

Router(config)# interface atm 2/0
Router(config-if) shutdown
Ctrl-Z
Router#

Cisco uBR7223 router

interface, followed by the type (atm) and slot/port (port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 2.

Router(config)# interface atm 2/0
Router(config-if) shutdown
Ctrl-Z
Router#

Cisco uBR7246 router

interface, followed by the type (atm) and slot/port (port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 2.

Router(config)# interface atm 2/0
Router(config-if) shutdown
Ctrl-Z
Router#

VIP2 and VIP4 in Cisco 7000 series or Cisco 7500 series routers

interface, followed by the type (atm) and slot/port-adapter/port (interface-processor-slot-number/ port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 0 on a VIP2 or VIP4 installed in interface processor slot 1.

Router(config)# interface atm 1/0/0
Router (config-if) shutdown
Ctrl-Z
Router#


Note If you need to shut down additional interfaces, enter the interface atm command (followed by the interface address of the interface) for each of the interfaces on your port adapter. Use the no shutdown command to enable the interface.


Step 4 Write the new configuration to NVRAM as follows:

Router# copy running-config startup-config
[OK]
Router#

The system displays an OK message when the configuration has been stored in NVRAM.

Step 5 Verify that new interfaces are now in the correct state (shut down) using the show interfaces command (followed by the interface type and interface address of the interface) to display the specific interface. Table 5-2 provides examples.

Table 5-2 Examples of the show interfaces Command 

Platform
Command
Example

Catalyst RSM/VIP2 in Catalyst 5000 family switches

show interfaces atm, followed by slot/port (port-adapter-slot-number/
interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 3.

Router(config)# show interfaces atm 3/0
ATM3/0 is administratively down, line 
protocol is down

[Additional display text omitted from this 
example]

Cisco 7120 series routers

show interfaces atm, followed by slot/port (port-adapter-slot-number/
interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 3.

Router(config)# show interfaces atm 3/0
ATM3/0 is administratively down, line 
protocol is down

[Additional display text omitted from this 
example]

Cisco 7140 series routers

show interfaces atm, followed by slot/port (port-adapter-slot-number/
interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 4.

Router(config)# show interfaces atm 4/0
ATM4/0 is administratively down, line 
protocol is down

[Additional display text omitted from this 
example]

Cisco 7200 series routers

show interfaces atm, followed by slot/port
(port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 2.

Router(config)# show interfaces atm 2/0
ATM2/0 is administratively down, line 
protocol is down

[Additional display text omitted from this 
example]

Cisco uBR7223 router

show interfaces atm, followed by slot/port
(port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 1.

Router(config)# show interfaces atm 1/0
ATM1/0 is administratively down, line 
protocol is down

[Additional display text omitted from this 
example]

Cisco uBR7246 router

show interfaces atm, followed by slot/port
(port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 2.

Router(config)# show interfaces atm 2/0
ATM2/0 is administratively down, line 
protocol is down

[Additional display text omitted from this 
example]

VIP2 and VIP4 in Cisco 7000 series or Cisco 7500 series routers

show interfaces atm, followed by slot/port-adapter/port
(interface-processor-slot-number/ port-adapter-slot-number/ interface-port-number)

The example is for interface 0 on a port adapter in port adapter slot 0 on a VIP2 or VIP4 installed in interface processor slot 5.

Router(config)# show interfaces atm 5/0/0
ATM5/0/0 is administratively down, line 
protocol is down

[Additional display text omitted from this 
example]


Note For the Cisco 7206 and Cisco 7206VXR as router shelves, the show interfaces command requires a shelf number in the format show interfaces atm shelf-number/port-adapter-slot/interface.


Step 6 Reenable the interfaces by doing the following:

a. Repeat Step 3 to reenable an interface. Substitute the no shutdown command for the shutdown command.

b. Repeat Step 4 to write the new configuration to memory. Use the copy running-config startup-config command.

c. Repeat Step 5 to verify that the interfaces are in the correct state. Use the show interfaces command followed by the interface type and interface address of the interface.


For complete descriptions of software configuration commands, refer to the publications listed in the "Related Documentation" section.

Performing a Basic Configuration

Following are instructions for a basic configuration: enabling an interface, specifying IP routing, setting the MTU size, and configuring SONET framing. You might also need to enter other configuration subcommands, depending on the requirements for your system configuration and the protocols you plan to route on the interface. For complete descriptions of configuration subcommands and the configuration options available for ATM interfaces, refer to the appropriate software documentation.

In the following procedure, press the Return key after each step unless otherwise noted. At any time you can exit the privileged level and return to the user level by entering disable at the prompt as follows:

Router# disable

Router> 


Step 1 Enter configuration mode and specify that the console terminal is the source of the configuration subcommands, as follows:

Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#

Step 2 Specify the first interface to configure by entering the interface atm subcommand, followed by the interface address of the interface you plan to configure. Table 5-3 provides examples.

Table 5-3 Examples of the interface atm Subcommand 

Platform
Command
Example

Catalyst RSM/VIP2 in Catalyst 5000 family switches

interface atm, followed by slot/port (port-adapter-slot-number/
interface-port-number)

The example is for the first interface of a port adapter in port adapter slot 3.

Router(config)# interface atm 3/0
Router(config-if)#

Cisco 7120 series routers

interface atm, followed by slot/port (port-adapter-slot-number/
interface-port-number)

The example is for the first interface of a port adapter in port adapter slot 3.

Router(config)# interface atm 3/0
Router(config-if)#

Cisco 7140 series routers

interface atm, followed by slot/port (port-adapter-slot-number/
interface-port-number)

The example is for the first interface of a port adapter in port adapter slot 4.

Router(config)# interface atm 4/0
Router(config-if)#

Cisco 7200 series routers

interface atm, followed by slot/port
(port-adapter-slot-number/ interface-port-number)

The example is for the first interface of a port adapter in port adapter slot 6.

Router(config)# interface atm 6/0
Router(config-if)#

Cisco uBR7223 router

interface atm, followed by slot/port
(port-adapter-slot-number/ interface-port-number)

The example is for the first interface of a port adapter in port adapter slot 2.

Router(config)# interface atm 2/0
Router(config-if)#

Cisco uBR7246 router

interface atm, followed by slot/port
(port-adapter-slot-number/ interface-port-number)

The example is for the first interface of a port adapter in port adapter slot 2.

Router(config)# interface atm 2/0
Router(config-if)#

VIP2 and VIP4 in Cisco 7000 series or Cisco 7500 series routers

interface atm, followed by slot/port-adapter/port
(interface-processor-slot-number/ port-adapter-slot-number/ interface-port-number)

The example is for the first interface of a port adapter in port adapter slot 0 on a VIP2 or a VIP4 installed in interface processor slot 5.

Router(config)# interface atm 5/0/0
Router(config-if)#

Step 3 Assign an IP address and subnet mask to the interface (if IP routing is enabled on the system), by using the ip address subcommand, as in the following example:

Router(config-if)# ip address 10.0.0.0 10.255.255.255

Step 4 Add any additional configuration subcommands required to enable routing protocols and set the interface characteristics. Table 5-4 provides examples of other ATM subcommands.

Step 5 Reenable the interfaces using the no shutdown command. (See the "Shutting Down an Interface" section.)

Step 6 Configure all additional port adapter interfaces as required.

Step 7 After including all of the configuration subcommands to complete your configuration, press Ctrl-Z—hold down the Control key while you press Z—or enter end or exit to exit configuration mode and return to the EXEC command interpreter prompt.

Step 8 Write the new configuration to NVRAM as follows:

Router# copy running-config startup-config
[OK]

Router#


Table 5-4 Examples of ATM Configuration Subcommands 

Command
Function
Example
mtu bytes

Sets the maximum transmission unit (MTU) size. Set bytes in the range of 64 through 9188 bytes. The default is 4470 bytes. (4470 bytes exactly matches FDDI and HSSI interfaces for autonomous switching.)

Router# mtu 64
no mtu

Restores the default MTU size of 4470 bytes.

Router# no mtu
Router# atm sonet stm-1

Configures the PA-A1 ATM for the SONET STM-1 setting. In STM-1 mode, the PA-A1 ATM sends idle cells for cell-rate decoupling. In STS-3 mode, the PA-A1 ATM sends unassigned cells for cell-rate decoupling. The default SONET setting is STS-3.

Router# atm sonet stm-1
no atm sonet stm-1

Configures the PA-A1 ATM for the default STS-3 SONET setting.

Router# no atm sonet stm-1

atm clock internal

Configures the PA-A1 ATM to generate the transmit clock internally for SONET. By default, the PA-A1 ATM uses the recovered receive clock to provide transmit clocking.

Router# atm clock internal

This completes the procedure for creating a basic configuration.

Virtual Circuits

A virtual circuit (VC) is a point-to-point connection between remote hosts and routers. A VC is established for each ATM end node with which the router communicates. The characteristics of the VC are established when the VC is created and include the following:

Quality of service (QoS)

ATM adaptation layer 5 (AAL5) mode

Encapsulation type (Logical Link Control/Subnetwork Access Protocol (, multiplexing device, and Q.2931 Signaling ATM Adaption Layer)

Each VC supports the following router functions:

Multiprotocol (AppleTalk, CLNS, DECnet, IP, IPX, VINES, XNS)

Fast switching of IP packets

Pseudobroadcast support for multicast packets

By default, fast switching is enabled on all PA-A1 ATM interfaces. These switching features can be turned off with interface configuration commands. Autonomous switching must be explicitly enabled per interface.

Configuring Permanent Virtual Circuits

All permanent virtual circuits (PVCs) configured into the router remain active until the circuit is removed from the configuration. The PVCs also require a permanent connection to the ATM switch. All virtual circuit characteristics apply to PVCs. When a PVC is configured, all the configuration options are passed on to the PA-A1 ATM. These PVCs can be written into the nonvolatile RAM (NVRAM) as part of the Route Processor (RP) configuration and are used when the RP image is reloaded.

Some ATM switches have point-to-multipoint PVCs that do the equivalent of broadcasting. If a point-to-multipoint PVC exists, then that PVC can be used as the sole broadcast PVC for all multicast requests.

To configure a PVC, you must perform the following tasks:

1. Create a PVC.

2. Map a protocol address to a PVC.

See the Wide-Area Networking Configuration Guide for more information on creating PVCs on the Cisco 7000 family of routers. Also see the "ATM Configuration Examples" section.

Creating a PVC

When you create a PVC, you create a virtual circuit descriptor (VCD) and attach it to the virtual path identifier (VPI) and virtual channel identifier (VCI). A VCD is an PA-A1 ATM-specific mechanism that tells the PA-A1 ATM which VPI/VCI to use for a particular packet. The PA-A1 ATM requires this feature to manage packets for transmission. The number chosen for the VCD is independent of the VPI/VCI used. When you create a PVC, you also specify the AAL and encapsulation. A rate queue is used that matches the default peak and average rate, which are equal, and are specified in kilobits per second. To create a PVC on the PA-A1 ATM interface, use the atm pvc command. To remove a PVC, use the no form of this command.

atm pvc vcd vpi vci aal-encap
no atm pvc vcd

VIP2 and VIP4 example:

Router(config)# interface atm 2/2/0
Router(config-if)# atm pvc 2048 255 128 aal5snap

Catalyst RSM/VIP2 example:

Router(config)# interface atm 0/0
Router(config-if)# atm pvc 2048 255 128 aal5snap

Cisco 7100 series example:

Router(config)# interface atm 3/0
Router(config-if)# atm pvc 2048 255 128 aal5snap

Cisco 7200 series and Cisco uBR7200 series example:

Router(config)# interface atm 2/0
Router(config-if)# atm pvc 2048 255 128 aal5snap

Note For the Cisco 7206 and Cisco 7206VXR router shelves, the interface specified in the above example would include a shelf number. For example, the command interface atm 5/2/0 specifies the first ATM interface of the port adapter in slot 2 of Cisco 7206 or 7206VXR router shelf 5.


The atm pvc command creates PVC n and attaches the PVC to VPI and VCI. The AAL used is specified by aal and encapsulation by encap.

The default for peak rate and average rate is that peak = average, and the PVC is automatically connected to the highest bandwidth rate queue available.

Table 5-5 atm-pvc Command Values

Command Value
Function

vcd

A per-PA-A1 ATM unique index value describing this VC in the range of 1 to MAXVC. (For Cisco 7200 series systems with PA-A1 ATM installed, MAXVC is fixed at 2047; the VCD value is not configurable. For Cisco 7000 series and Cisco 7500 series systems with a VIP2- or VIP4-based PA-A1 ATM installed, the value of MAXVC is 2047 and the VCD value is configurable from 1 to MAXVC.)

vpi

The ATM network VPI to use for this VC in the range of 0 through 255.

vci

The ATM network VCI to use for this VC in the range of 0 through 2048.

aal-encap type

Specifies the encapsulation type to use on this VC.

aal-encap aal5mux

Specifies the MUX-type for this VC. A protocol type must be specified.

aal-encap aal5snap

LLC/SNAP precedes the protocol datagram

aal-encap aal5nlpid

Network Layer Protocol Identification (NLPID) precedes the protocol datagram.

aal-encap qsaal

A signalling type VC.


Mapping a Protocol Address to a PVC

Cisco IOS software supports a mapping scheme that identifies the ATM address of remote hosts and routers. This address can be specified either as a VCD for a PVC or a network service access point (NSAP) address for SVC operation.

Enter mapping commands as groups; multiple map entries can exist in one map list. First create a map list, then associate the list with an interface.

Enter the map-list name command; then enter the protocol, protocol address, and other variables, as follows:

map-list name  
protocol-type protocol-address [atm-vc vcd] | [atm-nsap nsap-address] [broadcast]

The broadcast keyword specifies that this map entry receives the corresponding protocol broadcast requests to the interface (for example, any network routing protocol updates). If you do not specify broadcast, the ATM software is prevented from sending routing protocol updates to the remote hosts.

After you create the map list, specify the ATM interface to which it applies with the interface command, as follows:

VIP2 and VIP4 example:

VIP2# interface atm 1/0/0

Catalyst RSM/VIP2 example:

RSM# interface atm 0/0

Cisco 7100 series, Cisco 7200 series, and Cisco uBR7200 series example:

7200# interface atm 1/0

Note For the Cisco 7206 and Cisco 7206VXR router shelves, the interface specified in the above example would include a shelf number. For example, the command interface atm 5/2/0 would specify the first ATM interface of the port adapter in slot 2 of Cisco 7206 or 7206VXR router shelf 5.


Associate the map list to an interface with the following command:

map-group name

You can create multiple map lists, but only one map list can be associated with an interface. Different map lists can be associated with different interfaces. The following is an example of the commands to map a list to an interface on a Cisco 7200 series router:

interface ATM3/0
 ip address 1.1.1.2 255.255.255.0
 map-group atm1
 atm clock INTERNAL
 atm pvc 1 0 1 aal5snap
!
no ip classless
!
map-list atm1
 ip 1.1.1.1 atm-vc 1 broadcast

Configuring Switched Virtual Circuits

ATM switched virtual circuit (SVC) service operates similarly to X.25 SVC service, although ATM allows much higher throughput. Virtual circuits are created and released dynamically, providing user bandwidth on demand. This service requires a signaling protocol between the router and the switch.

The ATM signaling software provides a method of dynamically establishing, maintaining, and clearing ATM connections at the User-Network Interface (UNI). The ATM signaling software conforms to ATM Forum UNI 3.0.

In UNI mode, the user is the router, and the network is an ATM switch. This is an important distinction. The Cisco router does not perform ATM-level call routing. Instead, the ATM switch does the ATM call routing, and the router routes packets through the resulting circuit. The router is viewed as the user and the LAN interconnection device at the end of the circuit, and the ATM switch is viewed as the network.

The Cisco router is used primarily to interconnect LANs via an ATM network. You can connect not only routers to ATM switches, but also any computer with an ATM interface that conforms to the ATM Forum UNI specification. See the Wide-Area Networking Configuration Guide for more information on configuring SVCs for the Cisco 7500 series, Cisco 7000 series, and Cisco 7200 series of routers, and the Cisco uBR7200 series universal broadband routers. Also see the "ATM Configuration Examples" section,.

Maintaining PA-A1 ATM Statistics

The PA-A1 ATM maintains a count of certain errors. In addition to keeping a count of these errors, the PA-A1 ATM also captures a snapshot of the last VCI/VPI that caused the error. Each PA-A1 ATM error counter is 16 bits in size. Errors counted include the following:

Cyclical redundancy check (CRC) errors

Giants (a frame with more than 1518 bytes, including the CRC) received

No buffers available

Framing errors

Application layer and physical layer errors

Packet timeout errors on receive

Checking the Configuration

After configuring the new interface, use show commands to display the status of the new interface or all interfaces and use the ping and loopback commands to check connectivity. This section includes the following subsections:

Using show Commands to Verify the New Interface Status

Using show Commands to Display ATM Information

Using the Debug ATM Commands

Using the ping Command to Verify Network Connectivity

Configuring an ATM Interface for Local Loopback

Using show Commands to Verify the New Interface Status

Table 5-6 demonstrates how you can use the show commands to verify that new interfaces are configured and operating correctly and that the PA-A1 ATM appears in them correctly. Sample displays of the output of selected show commands appear in the sections that follow. For complete command descriptions and examples, refer to the publications listed in the "Related Documentation" section.


Note The outputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only.


Table 5-6 Using show Commands 

Command
Function
Example

show version or show hardware

Displays system hardware configuration, the number of each interface type installed, Cisco IOS software version, names and sources of configuration files, and boot images

Router# show version

show controllers

Displays all the current interface processors and their interfaces

Router# show controllers

show controllers cbus

Displays all the current interface processors and their interfaces for the Catalyst RSM/VIP21 , the VIP2, and the VIP4

Router# show controllers cbus

show diag slot

Note The slot argument is not required with Catalyst 5000 family switches.

Displays types of port adapters installed in your system and information about a specific port adapter slot, interface processor slot, or chassis slot

Router# show diag 2

show interfaces type 0 or 1/
interface-port-number

Displays status information about a specific type of interface (for example, atm) on a Catalyst RSM/VIP2

Router# show interfaces atm 1/0

show interfaces type 3/
interface-port-number

Displays status information about a specific type of interface (for example, atm) in a Cisco 7120 series router

Router# show interfaces atm 3/0

show interfaces type 4/
interface-port-number

Displays status information about a specific type of interface (for example, atm) in a Cisco 7140 series router

Router# show interfaces atm 4/0

show interfaces type port-adapter-slot-number/
interface-port-number

Displays status information about a specific type of interface (for example, atm) in a Cisco 7200 series router

Router# show interfaces atm 1/0

show interfaces type 1/
interface-port-number

Displays status information about a specific type of interface (for example, atm) in a Cisco uBR7223 router

Router# show interfaces atm 1/1

show interfaces type/
interface-processor-slot-number/
port-adapter-slot-number/interface-port-number

Displays status information about a specific type of interface (for example, atm) on a VIP2 or a VIP4 in a Cisco 7000 series or a Cisco 7500 series router

Router# show interfaces atm 3/1/0

show protocols

Displays protocols configured for the entire system and for specific interfaces

Router# show protocols

show running-config

Displays the running configuration file

Router# show running-config

show startup-config

Displays the configuration stored in NVRAM

Router# show startup-config

1 Disregard the slot values for the Catalyst RSM/VIP2 for the show controllers cbus and the show diag commands as these slot values are not relevant to any physical connection.



Note For the Cisco 7206 and Cisco 7206VXR as router shelves, the show interfaces command requires a shelf number in the format show interfaces type shelf-number/
port-adapter-slot/ interface.


If an interface is down and you configured it as up, or if the displays indicate that the hardware is not functioning properly, ensure that the interface is properly connected and terminated. If you still have problems bringing the interface up, contact a service representative for assistance. This section includes the following subsections:

Using the show version or show hardware Commands

Using the show diag Command

Using the show interfaces Command

Using the show version or show hardware Commands

Display the configuration of the system hardware, the number of each interface type installed, the Cisco IOS software version, the names and sources of configuration files, and the boot images, by using the show version (or show hardware) command.


Note The outputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only.


Catalyst RSM/VIP2 Catalyst 5000 Family Switches

Following is an example of the show version command from a Catalyst 5000 family switch with the PA-A1 ATM:

Router# show version
Cisco Internetwork Operating System Software
IOS (tm) C5RSM Software (C5RSM-JSV-M), Version 11.2(9)P
Copyright (c) 1986-1997 by cisco Systems, Inc.
Compiled Tue 24-Jun-97 17:09 by shj
Image text-base: 0x600108E0, data-base: 0x6095E000

ROM: System Bootstrap, Version 11.2(15707)
BOOTFLASH: C5RSM Software (C5RSM-JSV-M), Version 11.2

yosemite_3 uptime is 17 hours, 17 minutes
System restarted by reload
System image file is "dirt/yosemite/c5rsm-jsv-mz.7P", booted via tftp from 223.2
55.254.254

cisco RSP2 (R4700) processor with 32768K bytes of memory.
R4700 processor, Implementation 33, Revision 1.0
Last reset from power-on
G.703/E1 software, Version 1.0.
SuperLAT software copyright 1990 by Meridian Technology Corp).
Bridging software.
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
TN3270 Emulation software.
1 EIP controller (2 Ethernet).
1 VIP2 controller (1 ATM).
2 Ethernet/IEEE 802.3 interfaces.
1 ATM network interface.
125K bytes of non-volatile configuration memory.
 
8192K bytes of Flash internal SIMM (Sector size 256K).
No slave installed in slot 7.
Configuration register is 0x100

Cisco 7100 Series Routers

Following is an example of the show version command from a Cisco 7120 series router with the PA-A1 ATM:

Router# show version
Cisco Internetwork Operating System Software 
IOS (tm) 7100 Software (C7100-J-M), Version 11.1(10)CA
Synced to mainline version: 11.1(10)CA
Copyright (c) 1986-1997 by cisco Systems, Inc.
Compiled Tue 07-Jan-97 21:02 by biff
Image text-base: 0x600088F0, data-base: 0x606B2000
 
ROM: System Bootstrap, Version 11.1(10)CA, RELEASE SOFTWARE
ROM: 7100 Software (C7100-BOOT-M), Version 11.1(10)CA, RELEASE SOFTWARE
 
Router uptime is 1 minute
System restarted by reload
System image file is "biff/c7100-j-mz.970107", booted via tftp from 223.255.254.254
 
cisco 7120 (NPE150) processor with 26624K/6144K bytes of memory.
R4700 processor, Implementation 33, Revision 1.0 (512KB Level 2 Cache)
Last reset from power-on
Bridging software.
SuperLAT software copyright 1990 by Meridian Technology Corp).
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
TN3270 Emulation software (copyright 1994 by TGV Inc).
4 Ethernet/IEEE 802.3 interfaces.
1 ATM network interface.
125K bytes of non-volatile configuration memory.
1024K bytes of packet SRAM memory.
 
20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
4096K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x0

Cisco 7200 Series and Cisco uBR7200 Series Routers

Following is an example of the show version command from a Cisco 7200 series router with the PA-A1 ATM:

Router# show version
Cisco Internetwork Operating System Software 
IOS (tm) 7200 Software (C7200-J-M), Version 11.1(10)CA
Synced to mainline version: 11.1(10)CA
Copyright (c) 1986-1997 by cisco Systems, Inc.
Compiled Tue 07-Jan-97 21:02 by biff
Image text-base: 0x600088F0, data-base: 0x606B2000
 
ROM: System Bootstrap, Version 11.1(10)CA, RELEASE SOFTWARE
ROM: 7200 Software (C7200-BOOT-M), Version 11.1(10)CA, RELEASE SOFTWARE
 
Router uptime is 1 minute
System restarted by reload
System image file is "biff/c7200-j-mz.970107", booted via tftp from 223.255.254.254
 
cisco 7206 (NPE150) processor with 26624K/6144K bytes of memory.
R4700 processor, Implementation 33, Revision 1.0 (512KB Level 2 Cache)
Last reset from power-on
Bridging software.
SuperLAT software copyright 1990 by Meridian Technology Corp).
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
TN3270 Emulation software (copyright 1994 by TGV Inc).
4 Ethernet/IEEE 802.3 interfaces.
1 ATM network interface.
125K bytes of non-volatile configuration memory.
1024K bytes of packet SRAM memory.
 
20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
4096K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x0

VIP2 or VIP4 in Cisco 7000 Series and Cisco 7500 Series Routers

Following is an example of the show version command from a Cisco 7500 series router with the PA-A1 ATM:

Router# show version
Cisco Internetwork Operating System Software 
IOS (tm) GS Software (RSP-PV-M), Version 11.1(9)CA1
Synced to mainline version: 11.1(9)CA1
Copyright (c) 1986-1997 by cisco Systems, Inc.
Compiled Wed 08-Jan-97 04:17 by biff
Image text-base: 0x60010900, data-base: 0x60746000
 
ROM: System Bootstrap, Version 11.1(9)CA1 RELEASE SOFTWARE
ROM: GS Bootstrap Software (RSP-BOOT-M), Version 11.1(9)CA1, RELEASE SOFTWARE
 
Router uptime is 1 minute
System restarted by reload
System image file is "biff/rsp-pv-mz.970107", booted via tftp from 223.255.254.254
 
cisco RSP2 (R4600) processor with 16384K bytes of memory.
R4600 processor, Implementation 32, Revision 2.0
Last reset from power-on
G.703/E1 software, Version 1.0.
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
Chassis Interface.
1 EIP controller (2 Ethernet).
1 VIP2 controller (1 ATM).

Using the show diag Command

Display the types of port adapters installed in your system (and specific information about each) using the show diag slot command, where slot is the port adapter slot in a Cisco 7100 series, Cisco 7200 series, and Cisco uBR7200 series router and the interface processor slot in a Cisco 7000 series or Cisco 7500 series router with a VIP2 or a VIP4.


Note The outputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only.


Catalyst RSM/VIP2 in Catalyst 5000 Family Switches


Note The slot argument is not required for Catalyst 5000 family switches.


Following is an example of the show diag command that shows a PA-A1 ATM on a Catalyst RSM/VIP:

Router# show diag
Slot 0:
        Physical slot 0, ~physical slot 0xF, logical slot 0, CBus 0
        Microcode Status 0x4
        Master Enable, LED, WCS Loaded
        Board is analyzed 
        Pending I/O Status: None
        EEPROM format version 1
        VIP2 controller, HW rev 2.3, board revision A0
        Serial number: 03515951  Part number: 73-1684-03
        Test history: 0x00        RMA number: 00-00-00
        Flags: cisco 7000 board; 7500 compatible
 
        EEPROM contents (hex):
          0x20: 01 15 02 03 00 35 A6 2F 49 06 94 03 00 00 00 00
          0x30: 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 
        Slot database information:
        Flags: 0x4      Insertion time: 0x10CC (00:01:19 ago)
 
        Controller Memory Size: 16 MBytes DRAM, 1024 KBytes SRAM
 
        PA Bay 0 Information:
                ATM LITE PA, 1 ports
                EEPROM format version 1
                HW rev 1.0, Board revision UNKNOWN
                Serial number: 02025546  Part number: 73-1843-02 

Cisco 7100 Series Routers

Following is an example of the show diag slot command that shows a PA-A1 ATM in port adapter slot 3 of a Cisco 7120 series router:

Router# show diag 3
Slot 3:
        ATM OC3 (MM) port adapter, 1 port
        Port adapter is analyzed 
        Port adapter insertion time 00:02:05 ago
        Hardware revision 1.0           Board revision UNKNOWN
EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 17 01 00 00 2B 24 DB 49 07 33 02 FF FF FF FF
          0x30: 04 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF

Cisco 7200 Series and Cisco uBR7200 Series Routers

Following is an example of the show diag slot command that shows a PA-A1 ATM in port adapter slot 3 of a Cisco 7200 series router:

Router# show diag 3
Slot 3:
        ATM OC3 (MM) port adapter, 1 port
        Port adapter is analyzed 
        Port adapter insertion time 00:02:05 ago
        Hardware revision 1.0           Board revision UNKNOWN
        Serial number     2827483       Part number    73-1843-02
        Test history      0xFF          RMA number     255-255-255
        EEPROM format version 1
        EEPROM contents (hex):
          0x20: 01 17 01 00 00 2B 24 DB 49 07 33 02 FF FF FF FF
          0x30: 04 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF

VIP2 or VIP4 in Cisco 7000 Series and Cisco 7500 Series Routers

Following is an example of the show diag slot command that shows a PA-A1 ATM in port adapter slot 0 on a VIP2 or VIP4 in interface processor slot 0:

Router# show diag 0
Slot 0:
        Physical slot 0, ~physical slot 0xF, logical slot 0, CBus 0
        Microcode Status 0x4
        Master Enable, LED, WCS Loaded
        Board is analyzed 
        Pending I/O Status: None
        EEPROM format version 1
        VIP2 controller, HW rev 2.3, board revision A0
        Serial number: 03515951 Part number: 73-1684-03
        Test history: 0x00        RMA number: 00-00-00
        Flags: cisco 7000 board; 7500 compatible
 
        EEPROM contents (hex):
          0x20: 01 15 02 03 00 35 A6 2F 49 06 94 03 00 00 00 00
          0x30: 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 
        Slot database information:
        Flags: 0x4      Insertion time: 0x10CC (00:01:19 ago)
 
        Controller Memory Size: 16 MBytes DRAM, 1024 KBytes SRAM
 
        PA Bay 0 Information:
                ATM PA, 1 ports
                EEPROM format version 1
                HW rev 1.0, Board revision UNKNOWN
                Serial number: 02025546 Part number: 73-1843-02 

Using the show interfaces Command

The show interfaces command displays status information (including the physical slot and interface address) for the interfaces you specify. All of the examples that follow specify ATM interfaces.

For complete descriptions of interface subcommands and the configuration options available for Catalyst RSM/VIP2, Cisco 7100 series, Cisco 7200 series, Cisco uBR7200 series, and Cisco 7500 series router with a VIP2 or a VIP4, refer to the publications listed in the "Related Documentation" section.


Note The outputs that appear in this document may not match the output you receive when running these commands. The outputs in this document are examples only.


Catalyst RSM/VIP2 in Catalyst 5000 Family Switches

In this example, the PA-A1 ATM is in port adapter slot 0.

Router# show interfaces atm 0/0
ATM0/0 is up, line protocol is up 
  Hardware is cxBus ATM
  Internet address is 1.1.1.1/24
  MTU 4470 bytes, sub MTU 4470, BW 156250 Kbit, DLY 80 usec, rely 255/255, load 1/255
  Encapsulation ATM, loopback not set, keepalive set (10 sec)
  Encapsulation(s): AAL5, PVC mode
  256 TX buffers, 256 RX buffers,
  2048 maximum active VCs, 1024 VCs per VP, 1 current VCCs
  VC idle disconnect time: 300 seconds
  Last input never, output 00:00:05, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 1 packets/sec
  5 minute output rate 0 bits/sec, 1 packets/sec
     5 packets input, 560 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     5 packets output, 560 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out

Cisco 7100 Series, Cisco 7200 Series and Cisco uBR7200 Series Routers

Following is an example of the show interfaces atm command. In this example, the PA-A1 ATM is in port adapter slot 3:

Router# show interfaces atm 3/0
ATM3/0 is up, line protocol is up 
  Hardware is TI1570 ATM
  Internet address is 1.1.1.2/24
  MTU 4484 bytes, sub MTU 4470, BW 156250 Kbit, DLY 80 usec, rely 20/255, load 1/255
  Encapsulation ATM, loopback not set, keepalive set (10 sec)
  Encapsulation(s): AAL5, PVC mode
  2048 maximum active VCs, 1024 VCs per VP, 1 current VCCs
  VC idle disconnect time: 300 seconds
  Last input never, output 00:00:21, output hang never
  Last clearing of "show interface" counters 00:00:23
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     5 packets input, 560 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     5 packets output, 560 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out

Note For the Cisco 7206 and Cisco 7206VXR router shelves, the show interfaces command requires a shelf number in the format show interfaces type shelf-number/port-adapter-slot/interface.


VIP2 and VIP4 in Cisco 7000 Series or Cisco 7500 Series Routers

Following is an example of the show interfaces command for an ATM-configured VIP2 or VIP4 in interface processor slot 5, in port adapter slot 0.

Router# show interfaces atm 5/0/0
ATM5/0/0 is up, line protocol is up 
  Hardware is cyBus ATM
  Internet address is 1.1.1.1/24
  MTU 4470 bytes, sub MTU 4470, BW 156250 Kbit, DLY 80 usec, rely 255/255, load 1/255
  Encapsulation ATM, loopback not set, keepalive set (10 sec)
  Encapsulation(s): AAL5, PVC mode
  256 TX buffers, 256 RX buffers,
  2048 maximum active VCs, 1024 VCs per VP, 1 current VCCs
  VC idle disconnect time: 300 seconds
  Last input never, output 00:00:05, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 1 packets/sec
  5 minute output rate 0 bits/sec, 1 packets/sec
     5 packets input, 560 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     5 packets output, 560 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
2 Ethernet/IEEE 802.3 interfaces.
1 ATM network interface.
125K bytes of non-volatile configuration memory.
 
8192K bytes of Flash internal SIMM (Sector size 256K).
No slave installed in slot 7.
Configuration register is 0x100

Using show Commands to Display ATM Information

ATM show commands are available to display the current state of the ATM network and the connected VCs.

Table 5-7 provides examples.

Table 5-7 ATM show Commands 

Command
Function
Example

show atm-vc[vcd]

Displays current VCs and traffic information for the specified VCD

The example displays statistics for all PVCs:

Router# show atm-vc
Intfc.   VCD   VPI   VCI   Input   
Output  AAL/Encaps    Peak  Avg.  
Burst
ATM4/0   2     2     2     951 
[Additional display text omitted]

The example is for the show atm-vc n command, where n is the VCD unique index value, to display statistics for a specific PVC:

Router# show atm-vc 4
ATM4/0: VCD: 4, VPI: 4, VCI: 4, 
etype:0xBAD, AAL5 - MUX, Flags: 
0x34
PeakRate: 0, Average Rate: 0, 
Burst: 0 *32cells, Vcmode: 0xE200
InPkts: 164, OutPkts: 0, InFast: 
0, OutFast: 0, Broadcasts: 0

show atm traffic

Displays global information about ATM traffic to and from all ATM networks connected to the router

Router# show atm traffic
5 Input packets
5 Output packets
0 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

show atm map

Displays the active list of ATM static maps to remote hosts on an ATM network

Router# show atm map
Map list atm1 : PERMANENT
ip 1.1.1.1 maps to VC 1, broadcast

show controllers cbus

Displays the internal status of each CxBus or CyBus interface processor, including the interface processor slot location, the card hardware version and the currently running microcode version. (The show controllers cbus command also lists each interface (port) on each interface processor, including the logical interface number, interface type, physical (slot/port) address, and hardware (station address) of each interface.)

The following example shows an ATM port adapter installed in interface processor slot 0:

Router# show controllers cbus
slot0: VIP2, hw 2.3, sw 21.40, ccb 
5800FF20, cmdq 48000080, vps 8192
    software loaded from system 
    IOS (tm) VIP Software 
(SVIP-DW-M), Experimental Version 
11.1(10) [biff 272]
    ROM Monitor version 17.0
    ATM0/0/0, applique is SONET 
(155Mbps)
      gfreeq 48000158, lfreeq 
48000168 (4544 bytes), throttled 0
      rxlo 4, rxhi 329, rxcurr 1, 
maxrxcurr 2
      txq 48001A00, txacc 48001A02 
(value 329), txlimit 329

Using the Debug ATM Commands

The following debug commands are available to aid in solving ATM network problems:

To create a dump of all protocol packets, use the debug atm packet command. This command displays the contents of the SNAP/NLPID/SMDS header followed by the first 40 bytes of a packet in hexadecimal format.

To display errors, use the debug atm errors command. This command displays information from all detected ATM errors. This includes such errors as encapsulation failures and errors during ATM configuration.

To display ATM events, use the debug atm events command. This command displays event changes to the ATM port adapter. Reset configurations, VC configurations, and ATM port adapter configurations are displayed here.

To display information about OAM cells, use the debug atm oam command. This command displays the contents of OAM cells as they arrive from the network.

After using a debug command, turn off debugging with the no debug command.

ATM Configuration Examples

For detailed configuration examples, refer to the router software publications listed in the "Related Documentation" section. This section contains the following subsections:

Example of PVCs with AAL5 and LLC/SNAP Encapsulation

Example of PVCs in a Fully Meshed Network

Example of SVCs in a Fully Meshed Network

Example of Connecting Two ATM Port Adapters Back-to-Back

For examples of emulated LAN configurations, see the Wide-Area Networking Configuration Guide.


Note For the Cisco 7206 and Cisco 7206VXR router shelves, the interface specified in the following examples would include a shelf number. For example, the command interface atm 5/3/0 specifies the first ATM interface of the port adapter in slot 3 of Cisco 7206 or 7206VXR router shelf 5.


Example of PVCs with AAL5 and LLC/SNAP Encapsulation

The following example creates PVC 5 on ATM interface 3/0 using LLC/SNAP encapsulation over AAL5. ATM interface 3/0 (IP address 10.0.0.0 10.255.255.255) connects with the ATM interface (IP address 10.0.0.0 10.255.255.255) at the other end of the connection. The static map-list named atm1 declares that the next node is a broadcast point for multicast packets from IP.

interface ATM3/0
ip address 10.0.0.0 10.255.255.255
 map-group atm1
 atm clock INTERNAL
 atm pvc 1 0 1 aal5snap
!
no ip classless
!
map-list atm1
 ip 1.1.1.1 atm-vc 1 broadcast

The following example is of a typical ATM configuration for a PVC:

interface ATM4/0
ip address 10.0.0.0 10.255.255.255
map-group atm
atm pvc 1 1 1 aal5snap
atm pvc 2 2 2 aal5snap
atm pvc 6 6 6 aal5snap
atm pvc 7 7 7 aal5snap
clns router iso-igrp comet
!
router iso-igrp comet
net 47.0004.0001.0000.0c00.6666.00
!
router igrp 109
network 131.108.0.0
!
ip domain-name CISCO.COM
!
map-list atm
ip 10.0.0.0 atm-vc 1 broadcast
clns 47.0004.0001.0000.0c00.6e26.00 atm-vc 6 broadcast
atm-vc 2 broadcast

Example of PVCs in a Fully Meshed Network

Figure 5-1 illustrates a fully meshed network. The following configuration examples for Routers A, B, and C follow the figure. In this example, the routers are configured to use PVCs. Fully meshed indicates that each network node has either a physical circuit or a virtual circuit connecting it to every other network node. The two map-list statements configured in Router A identify the ATM addresses of Routers B and C. The two map-list statements in Router B identify the ATM addresses of Routers A and C. The two map list statements in Router C identify the ATM addresses of Routers A and B.

Figure 5-1 Fully Meshed ATM Configuration Example

Router A

ip routing
!
interface atm 4/0
ip address 131.108.168.1 255.255.255.0
atm pvc 1 0 10 aal5snap
atm pvc 2 0 20 aal5snap
map-group test-a
!
map-list test-a
ip 131.108.168.2 atm-vc 1 broadcast
ip 131.108.168.3 atm-vc 2 broadcast

Router B

ip routing
!
interface atm 2/0
ip address 131.108.168.2 255.255.255.0
atm pvc 1 0 20 aal5snap
atm pvc 2 0 21 aal5snap
map-group test-b
!
map-list test-b
ip 131.108.168.1 atm-vc 1 broadcast
ip 131.108.168.3 atm-vc 2 broadcast

Router C

ip routing
!
interface atm 4/0
ip address 131.108.168.3 255.255.255.0
atm pvc 2 0 21 aal5snap
atm pvc 4 0 22 aal5snap
map-group test-c
!
map-list test-c
ip 131.108.168.1 atm-vc 2 broadcast
ip 131.108.168.2 atm-vc 4 broadcast

Example of SVCs in a Fully Meshed Network

The following example is also a configuration for the fully meshed network shown in Figure 5-1, but using SVCs. PVC 1 is the signaling PVC.

Router A

interface atm 4/0
ip address 131.108.168.1 255.255.255.0
map-group atm
atm nsap-address AB.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
atm pvc 1 0 5 qsaal
!
map-list atm
ip 131.108.168.2 atm-nsap BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1334.13
ip 131.108.168.3 atm-nsap BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1224.12

Router B

interface atm 2/0
ip address 131.108.168.2 255.255.255.0
map-group atm
atm nsap-address BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1334.13
atm pvc 1 0 5 qsaal
!
map-list atm
ip 131.108.168.1 atm-nsap AB.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
ip 131.108.168.3 atm-nsap BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1224.12

Router C

interface atm 4/0
ip address 131.108.168.3 255.255.255.0
map-group atm
atm nsap-address BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1224.12
atm pvc 1 0 5 qsaal
!
map-list atm
ip 131.108.168.1 atm-nsap AB.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
ip 131.108.168.2 atm-nsap BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1334.13

Example of Connecting Two ATM Port Adapters Back-to-Back

Two routers, each containing a PA-A1 ATM can be connected directly with a standard cable, which allows you to verify the operation of the ATM port or to directly link the routers in order to build a larger node.

Define Cisco 7500 series interfaces by interface type and physical slot or port location. The show interfaces command displays the logical unit number in the router and the physical slot or port location in the Cisco 7500 series router. For complete configuration descriptions and examples, refer to the router software publications appropriate for your Cisco IOS software release.

To connect two routers, attach the cable between the ATM port on each.

By default, the PA-A1 ATM expects a connected ATM switch to provide transmit clocking. To have the PA-A1 ATM generate the transmit clock internally for SONET physical layer interface module (PLIM) operation, add the atm clock internal command to your configuration.


Note For SONET interfaces, one of the ATM port adapters in each router must be configured to supply its internal clock to the line.


Following is an example of configuration file commands for two routers connected through their SONET interface:

First router:

interface ATM3/0
ip address 192.168.1.10 255.0.0.0
no keepalive
map-group atm-in
atm clock internal
atm pvc 1 1 5 aal5snap
!
map-list atm-in
ip 192.168.1.20 atm-vc 1 broadcast

Second router:

interface ATM3/0
ip address 192.168.1.20 255.0.0.0
no keepalive
map-group atm-in
atm clock internal
atm pvc 1 1 5 aal5snap
!
map-list atm-in
ip 192.168.1.10 atm-vc 1 broadcast

This completes the PA-A1 ATM interface installation and configuration.

Using the ping Command to Verify Network Connectivity

Using the ping command, you can verify that an interface port is functioning properly. This section provides brief descriptions of this command. Refer to the publications listed in the "Related Documentation" section for detailed command descriptions and examples.

The ping command sends echo request packets out to a remote device at an IP address that you specify. After sending an echo request, the command waits a specified time for the remote device to reply. Each echo reply is displayed as an exclamation point (!) on the console terminal; each request that is not returned before the specified timeout is displayed as a period (.). A series of exclamation points (!!!!!) indicates a good connection; a series of periods (.....) or the messages [timed out] or [failed] indicate a bad connection.

Following is an example of a successful ping command to a remote server with the address 10.0.0.10:

Router# ping 10.0.0.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echoes to 10.0.0.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/15/64 ms
Router#

If the connection fails, verify that you have the correct IP address for the destination and that the device is active (powered up), and repeat the ping command.

Proceed to the next section "Configuring an ATM Interface for Local Loopback" to finish checking network connectivity.

Configuring an ATM Interface for Local Loopback

To configure an ATM interface for local loopback (useful for checking that the PA-A1 ATM is working), use the following command:

Router# loopback diagnostic
Router# no loopback diagnostic

The no form of the command turns off local loopback.

To configure an ATM interface for external loopback, use the following command:

Router# loopback line
Router# no loopback line

The no form of the command turns off external loopback at the line.