Chapter 10
Troubleshooting PortChannels and Trunking
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Cannot Configure Trunking
Symptom
Table 10-3
Cannot Configure Trunking
Symptom
Possible Cause
Cannot configure
Trunking protocol is disabled.
trunking.
VSAN Traffic Does Not Traverse Trunk
Symptom
Table 10-4
VSAN Traffic Does Not Traverse Trunk
Symptom
Possible Cause
VSAN traffic does not
VSAN not in allowed-active VSAN
traverse trunk.
list.
OL-9285-05
Cannot configure trunking.
VSAN traffic does not traverse trunk.
Solution
Enable trunking. In Fabric Manager, choose Switches >
Interfaces > FC Logical, select the Trunk Config tab, and
set the Admin drop-down menu to trunk. Click Apply
Changes.
Use the trunk protocol enable CLI command.
Solution
Add VSAN to allowed-active list. In Fabric Manager,
choose Switches > Interfaces > FC Logical, select the
Trunk Config tab, and set the Allowed VSANs field. Click
Apply Changes.
Use the switchport trunk allowed vsan CLI command.
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
Trunking Issues
10-5