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11-9
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 11 Troubleshooting VSANs, Domains, and FSPF
Dynamic Port VSAN Membership Issues
Resolving Fabric Timer Issues Using Fabric Manager
Use caution when changing fabric timers.
To resolve fabric timer issues between VSANs using Fabric Manager, follow these steps:
Step 1 Choose Fabricxx > VSANxx > VSAN Attributes to verify that the fabric timers are inconsistent across
the VSANs.
Step 2 Choose Switches > FC Services > Timers and Policies. You see the fabric timers in the Information
pane.
Step 3 Click Change Timeout Values and set the timers and click Apply.
Resolving Fabric Timer Issues Using the CLI
Use caution when changing fabric timers.
To resolve fabric timer issues between VSANs using the CLI, follow these steps:
Step 1 Use the show fctimer command to verify that the fabric timers are inconsistent across the VSANs.
Step 2 Use the fctimer distribute command to enable CFS distribution for the fabric timers. Repeat this on all
switches in this VSAN.
Step 3 Use the fctimer command to set each timer.
Step 4 Use the fctimer commit command to save these changes and distribute them to all switches in the
VSAN.
Troubleshooting Interop Mode Issues
To troubleshoot interop modes, refer to the switch to switch interop guide at the following website:
http://www.cisco.com/univercd/cc/td/doc/product/sn5000/mds9000/mdsint/intgd.pdf
Dynamic Port VSAN Membership Issues
You can dynamically assign VSAN membership to ports is achieved by assigning VSANs based on the
device WWN. Dynamic port VSAN membership (DPVM) offers flexibility and eliminates the need to
reconfigure the VSAN to maintain fabric topology when a host or storage device connection is moved
between two switches or between ports on the same switch. It retains the configured VSAN regardless
of where a device is connected or moved.
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