Troubleshooting guide

C-4
Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
OL-0800-14
Appendix C Troubleshooting Cisco Switch Signaling
Troubleshooting Virtual Pathways and ISLs
VLAN AREHops STEHops Backup CRF
---- ------- ------- ----------
998 10 10 off
Step 3 Enter (for ISLs) the command show trunk.
Console> (enable) show trunk
The command displays a response like the following:
Port Mode Encapsulation Status Native vlan
-------- ----------- ------------- ------------ -----------
2/1 desirable dot1q trunking 1
2/2 desirable dot1q trunking 1
Port Vlans allowed on trunk
-------- ------------------------------------------------------
2/1 1-1005
2/2 1-1005
Port Vlans allowed and active in management domain
-------- -------------------------------------------------------
2/1 1,10,20,30,40,50,60
2/2 1,10,20,30,40,50,60
Port Vlans in spanning tree forwarding state and not pruned
-------- -------------------------------------------------------
2/1 1,10,20,30,40,50,60
2/2 1,10,20,30,40,50,60
Step 4 Use a ping utility to test the desired ports, VLANs, and ISLs.
Step 5 Check the switch equipment status, as described in the associated documentation. Replace suspected
hardware, and then return to Step 1 to verify switch operation.