Avaya 5000 Series Troubleshooting Manual page 199

Procedure
1. At the ACLI command prompt, enter the show vlan command to display the VLAN
2. Review the command output to ensure that the settings are correct.
Displaying VLAN interface details
About this task
You can display VLAN interface information to ensure that the port members in the IST owner
VLAN are tagged.
Procedure
1. At the ACLI command prompt, enter the show vlan interface info command
2. Review the command output to confirm VLAN information.
Displaying MLT details
About this task
To ensure that the IST is an MLT you can display the MLT information .
Procedure
1. At the ACLI command prompt, enter the show mlt command to display the MLT
2. Review the command output to confirm that the edge device links to aggregation
Displaying STP on ports
About this task
View the spanning tree port information to determine whether you need to disable spanning-
tree participation for the IST and SMLT ports connected to the edge.
Troubleshooting
ports membership for the VLANs.
to display the VLAN operation information for IST ports.
configuration.
devices forming an MLT.
SMLT routing issue
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