Troubleshooting guide

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ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 6 Troubleshooting Switch Router ATM Network Connections
Troubleshooting the PNNI Lowest-level Interface
Troubleshooting the PNNI Lowest-level Interface
This section describes how to troubleshoot the lowest-level PNNI interface connection problems.
This section contains the following procedures:
• Checking the PNNI Lowest-Level Interface
• Checking the PNNI and Signaling Control Channels
• Checking PNNI PVC Status on Lowest-level Interfaces
• Checking PNNI Interface Metric Configuration for Lowest-level Interfaces
• Debugging PNNI Hello State at the Lowest-level
Checking the PNNI Lowest-Level Interface
Use the following commands to check the lowest-level PNNI interface status:
Follow these steps to troubleshoot the lowest-level PNNI interface status:
Step 1 Use the show atm interface atm card/subcard/port status command to confirm PNNI interface and
administration status plus the hello state.
Note You can use the show atm status command to show status information for all of the
interfaces.
If the IF status and admin status are not up, make sure that the interface is not configured as shutdown.
If they still do not change to the UP state, see Chapter 5, “Troubleshooting Switch Router ATM
Interface Connections.”
If the PNNI hello state is n/a or not shown for an NNI interface between two switch routers, check the
routing mode by using the show atm routing-mode command. If it is static mode, use the no atm
routing-mode static command to allow PNNI operation. If this does not work, confirm that the installed
software version allows PNNI operation.
Command Purpose
show atm interface atm card/subcard/port
[status]
Confirms PNNI interface and administration
status plus the hello state.
show atm status Displays status information for all of the
interfaces.
show atm routing-mode Checks the switch router routing mode.
no atm routing-mode static If needed, configures the switch router to allow
PNNI operation.
show atm interface card/subcard/port Confirms that the interface is configured with:
• Auto configuration enabled (or as NNI)
• IF-type is NNI
• signalling: Enabled