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 Peer Group Leaders
Use the following commands to check the PGL configuration:
Follow these steps to troubleshoot the PNNI PGL:
Step 1 Use the show atm pnni hierarchy network detail command to display the PGL and ancestor LGN for
all higher hierarchy levels.
Step 2 If no active parent LGNs are shown, use the show atm pnni election local-node node-index command
on the node (or nodes) that is configured to allow operation as the PGL. If the problem occurs for
elections on a higher-level, use the local-node option to specify the node index number of the
higher-level node.
Switch# show atm pnni election local-node 1
PGL Status.............: Not PGL
Preferred PGL..........: NULL
Preferred PGL Priority.: n/a
Active PGL.............: NULL
Active PGL Priority....: n/a
Active PGL For.........: n/a
Current FSM State......: PGLE Operating: Not PGL
Last FSM State.........: PGLE Calculating
Last FSM Event.........: Preferred PGL Is Not Self
Configured Priority....: 0
Advertised Priority....: 0
Conf. Parent Node Index: NONE
PGL Init Interval......: 15 secs
Search Peer Interval...: 75 secs
Re-election Interval...: 15 secs
Override Delay.........: 30 secs
Switch#
Step 3 Confirm that the election leadership-priority is configured to a nonzero value and that the expected
primary PGL has the highest priority.
Step 4 Confirm that the PGL has a parent node configured that is enabled and running. Use the show atm pnni
hierarchy local-configured command to view the locally configured parent nodes.
Switch# show atm pnni hierarchy local-configured
Locally configured parent nodes:
Node Parent
Index Level Index Local-node Status Node Name
~~~~~ ~~~~~ ~~~~~~ ~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~
1 96 N/A Enabled/ Running Switch
Switch#
Command Purpose
show atm pnni hierarchy network [detail] Confirms configured PNNI hierarchy and
its status in detail.
show atm pnni election [local-node node-index] Confirms PGL election process for the
local node.
show atm pnni hierarchy local-configured Confirms configured PNNI hierarchy for
the local node.
show atm pnni election peers Confirms PGL election priority and
preferred PGL as advertised by all peers
in the peer group.