ATM Conditional Debug Support
First Published: May 07, 2004
Last Updated: November 25, 2009
Most ATM debugging commands are implemented either at the system level or at the interface level. The ATM Conditional Debug Support feature allows debugging to be limited specifically to an ATM interface, to a virtual channel identifier (VCI), or to a virtual path identifier/virtual channel identifier (VPI/VCI) pair, through use of the debug condition interface command.
Finding Feature Information
For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the "Feature Information for ATM Conditional Debug Support" section.
Use Cisco Feature Navigator to find information about platform support and Cisco IOS XE software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
Contents
•Prerequisites for ATM Conditional Debug Support
•Restrictions for ATM Conditional Debug Support
•Information About ATM Conditional Debug Support
•How to Configure ATM Conditional Debugging on ATM Interfaces
•Configuration Examples for ATM Conditional Debug Support
•Additional References
•Feature Information for ATM Conditional Debug Support
Prerequisites for ATM Conditional Debug Support
One or more ATM-encapsulated interfaces must be enabled, and one or more of the following debug commands must be enabled, to use the ATM Conditional Debug Support feature:
•debug atm arp
•debug atm counters
•debug atm errors
•debug atm events
•debug atm oam
•debug atm packet
•debug atm state
Restrictions for ATM Conditional Debug Support
•Only the ATM debugging commands listed in the "Prerequisites for ATM Conditional Debug Support" section section can use the ATM Conditional Debug Support feature.
•Conditional debugging for virtual circuits (VCs) can be enabled only for permanent virtual circuits (PVCs). Switched virtual circuits (SVCs) are not supported.
Information About ATM Conditional Debug Support
•ATM Debugging Extended to the Virtual Circuit Level
ATM Debugging Extended to the Virtual Circuit Level
The ATM debug commands are implemented either at the interface level or at the system level. The debug command output at these levels is not very useful when the user is interested in a particular set of VCs.
The Cisco IOS XE software has the infrastructure to support conditional debugging based on various filters that are set at the command-line interface (CLI). The conditional debugging infrastructure can filter out or suppress unwanted messages from the output of any existing debug command. The ATM Conditional Debug Support feature extends this infrastructure to support conditional debugging at the ATM VC level by extending the debug condition interface command with keywords that address specific virtual circuits. This feature can be implemented on top of conventional debugging, so that backward compatibility is ensured and at the same time applications can take advantage of conditional debugging where required. However, the extended debug condition interface command has priority over the older version of the command; that is, a debug condition setting using the older debug condition interface command will be discarded as soon as a new debug condition is enabled on a virtual circuit.
How to Configure ATM Conditional Debugging on ATM Interfaces
•Enabling Debugging for the ATM Interface (required)
Enabling Debugging for the ATM Interface
Perform this task to enable conditional debugging on a set of specified interfaces.
Prerequisites
You must enable ATM debugging and specify the conditions (interface, VCI, or VPI/VCI pair) for the ATM Conditional Debug Support feature to work.
SUMMARY STEPS
1. enable
2. debug atm [arp | counters | errors | events | oam | packet | state]
3. debug condition interface interface-type interface-number [vc {vci | vpi/vci}]
DETAILED STEPS
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Step 1 |
enable
Router> enable |
Enables privileged EXEC mode. •Enter your password if prompted. |
Step 2 |
debug atm [arp | counters | errors | events | oam | packet | state]
Router# debug atm state |
Displays various ATM events. |
Step 3 |
debug condition interface interface-type interface-number [vc {vci | vpi/vci}]
Router# debug condition interface ATM1/1/0 vc 10/100 |
Limits output for debugging according to the interface or ATM VC number. |
Configuration Examples for ATM Conditional Debug Support
•Enabling Debugging for a Specific ATM Interface and VPI/VCI Pair: Example
•Enabling Debugging for a Specific VCI: Example
Enabling Debugging for a Specific ATM Interface and VPI/VCI Pair: Example
The following example shows how to enable an ATM interface, specify an IP address for the interface, enable conditional debugging for that interface with a VPI/VCI pair of 10/100, and verify that debugging has been enabled:
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface atm 1/1/0.100 point-to-point
Router(config-if)# ip address 10.0.0.5 255.255.255.0
Router(config-if)# pvc 10/100
Router(config-if-atm-vc)# no shutdown
ATM VC States debugging is on
Router# debug condition interface ATM1/1/0 vc 10/100
Enabling Debugging for a Specific VCI: Example
The following example shows how to enable conditional debugging on a specific VCI. Note that when you enable conditional debugging on a specific VCI alone, the VPI value is automatically set to 0.
Router# debug condition interface atm 1/0 vc 4335
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface atm 1/0
Router(config-if)# pvc 4335
Router(config-if-atm-vc)# end
*Jul 12 21:46:52.487: atmdx_setup_vc(ATM1/0): vc=5, vpi=0, vci=4335, config_status=0
*Jul 12 21:46:52.487: atmdx_setup_cos(ATM1/0): vc=5, wred_name=, max_q=0
*Jul 12 21:46:52.487: ATM VC Debug: Condition 1, atm-vc 0/4335 AT1/0 triggered, count 1
*Jul 12 21:46:52.487: ATM1/0 Current Active VC count 4
*Jul 12 21:46:52.487: ATM VC notification event 0
*Jul 12 21:46:52.487: atmdx_platform_set_vc_state(ATM1/0): Setting the VC 5 state to UP
*Jul 12 21:46:52.487: ATM: PVC activated, ATM1/0 VCD 5 (0/4335)
*Jul 12 21:46:52.487: ATM VC notification event 2
*Jul 12 21:46:52.487: %SYS-5-CONFIG_I: Configured from console by console
Codes: DN - DOWN, IN - INACTIVE
Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells St
1/0 1 0 16 PVC ILMI UBR 149760 UP
1/0.10 4 0 100 PVC SNAP UBR 149760 UP
1/0 5 0 4335 PVC SNAP UBR 149760 UP
1/0.1 one 1 40 PVC SNAP UBR 149760 UP
1/0 2 3 100 PVC-A SNAP VBR 1000 1000 0 IN
4/ima1 1 23 34 PVC SNAP UBR 0 IN
Additional References
Related Documents
Standards
MIBs
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None |
To locate and download MIBs for selected platforms, Cisco IOS XE software releases, and feature sets, use Cisco MIB Locator found at the following URL: http://www.cisco.com/go/mibs |
RFCs
Technical Assistance
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The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
http://www.cisco.com/cisco/web/support/index.html |
Feature Information for ATM Conditional Debug Support
Table 1 lists the release history for this feature.
Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS XE software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
Note Table 1 lists only the Cisco IOS XE software release that introduced support for a given feature in a given Cisco IOS XE software release train. Unless noted otherwise, subsequent releases of that Cisco IOS XE software release train also support that feature.
Table 1 Feature Information for ATM Conditional Debug Support
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ATM Conditional Debug Support |
Cisco IOS XE Release 2.3 |
ATM Conditional Debug Support feature allows debugging to be limited specifically to an ATM interface, to a VCI, or to a VPI/VCI pair. The following commands are introduced or modified in the feature: debug condition interface, show debug. |
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