Cisco N5K-M1600 - Expansion Module - 6 Ports Troubleshooting Manual page 87

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Chapter 5
Troubleshooting SAN Switching Issues
S e n d d o c u m e n t c o m m e n t s t o n e x u s 5 k - d o c f e e d b a c k @ c i s c o . c o m .
Add VSAN to the allowed-active list by using the switchport trunk allowed vsan command.
xE port is isolated in a specific VSAN under interface of SAN Port Channel
The xE port is isolated in a specific VSAN that is under an interface of a SAN port channel.
The following error message may appear in the logging log:
"%$VSAN <VSAN#>%$ Interface port-channel <channel #>, vsan <vsan #> is down (isolation due
to [cause])".
Possible Cause
The xE port can be isolated in a specific VSAN for many reasons:
Solution
To resolve the VSAN isolation on the TE port, use the show interface fc <slot/port> command on the
TE port to determine the VSAN number. The isolated VSAN number must match the VSAN number
where the host and the storage are connected to.
In the output of the command, look for information such as Trunk vsans (isolated) (Vsan <number>).
Use the show port internal info interface san-port-channel <number> command to determine the
cause of the VSAN isolation.
Cannot create a san-port-channel interface
A SAN port channel interface cannot be created.
The following error message may appear while in configuration mode:
failed to create port-channel channel-id:
Possible Cause
The user receives the following message:
failed to create port-channel channel-id: all port-channels have been created [max channel
number reached]
Note
You can create a maximum of four SAN port channels (including Release NX-OS 4.2(1)N1(1)). This is
a software limitation.
Solution
If you need to create a SAN port channel with a specific number, but four SAN port channels were
already configured, then you have to delete one of the SAN port channels that is not actively used. Use
the no interface san-port-channel <x> command to delete one of the SAN port channels.
Possible Cause
You receive the following message:
OL-25300-01
Fabric timers might be misconfigured.
Port parameters might be misconfigured.
Zoning mismatch.
Cisco Nexus 5000 Series Troubleshooting Guide
SAN Port Channels
5-15

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