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 PNNI Addresses and Address Summarization
Note It is normal for prefixes to be missing at the higher-level if there is a matching summary or
a suppressed summary present at its level.
Step 9 Verify that the scope (level) is appropriate to advertise at the desired higher-levels.
Step 10 If the scope (level) does not have the expected value for a local prefix, check the configuration of the
UNI scope map, using the show atm pnni scope command. If it is not the desired map, the mode can be
changed to manual, and the desired scope translation levels can be configured.
It is normal for the prefixes to be missing if there is a shorter matching summary prefix configured at its
level. The summary prefix will be advertised instead of any longer prefixes that match.
However, if the summary prefix is configured for suppress, none of the prefixes that match it will
be advertised.
Debugging Summary Addresses
Use the following commands to show summary addresses:
Follow these steps to troubleshoot summary addresses and suppressed summary addresses for all of the
local nodes on an switch router:
Step 1 Use the show atm pnni summary command to display the PNNI summary address configuration.
Step 2 Check to see whether any expected summary addresses appear in the list for the expected local node for
the correct Int (Internal) or Ext (External) type with the expected suppressed or non suppressed attribute.
Step 3 Verify that all longer prefixes and addresses matching any summary addresses are reachable at the local
node or at a node in a child peer group. Otherwise, some addresses might be unreachable.
Step 4 Verify that the scope (level) is appropriate to advertise at all desired higher-levels.
Step 5 If the default switch router address summary is missing, use the show running-config command to make
sure that no auto summary is not configured for the affected local node.
Step 6 If an automatically generated ATM summary address is not the expected address, use the
show atm address command to show the configured active and nonactive switch router addresses.
Command Purpose
show atm pnni summary [local-node node-index] Confirms summary information
advertised by PNNI node.
show running-config Confirms that no auto summary is not
configured and summary address has not
been manually configured.
show atm addresses Confirms active and no active switch
router addresses.
show atm pnni local-node Confirms node and peer group IDs of
higher local nodes.