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10-5
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 10 Troubleshooting PortChannels and Trunking
Trunking Issues
Cannot Configure Trunking
Symptom Cannot configure trunking.
VSAN Traffic Does Not Traverse Trunk
Symptom VSAN traffic does not traverse trunk.
Table 10-3 Cannot Configure Trunking
Symptom Possible Cause Solution
Cannot configure
trunking.
Trunking protocol is disabled. 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.
Ta b l e 10 - 4 V S A N Tr a f f i c D o e s N o t Tr a v e r s e Tru n k
Symptom Possible Cause Solution
VSAN traffic does not
traverse trunk.
VSAN not in allowed-active VSAN
list.
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.
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