Timer Configuration Per-VSAN

You can also issue an fctimer for a specified VSAN to configure different TOV values for VSANs with special links like FC or IP tunnels. You can configure different E_D_TOV, R_A_TOV, and D_S_TOV values for individual VSANs. Active VSANs are suspended and activated when their timer values are changed.

Caution    

You cannot perform a nondisruptive downgrade to any earlier version that does not support per-VSAN FC timers.

Note     This configuration must be propagated to all switches in the fabric—be sure to configure the same value in all switches in the fabric.

If a switch is downgraded to Cisco MDS SAN-OS Release 1.2 or 1.1 after the timer is configured for a VSAN, an error message is issued to warn against strict incompatibilities.

To configure per-VSAN FC timers using Fabric Manager, follow these steps:

  1. Choose the VSAN for timer configuration from the Logical Domains pane. If a VSAN is not specified when you change the policies, the changed value is applied to all VSANs in the switch.
  2. Expand Switches, expand FC Services and select Timers & Policies in the Physical Attributes tree.
  3. Click Change Timeouts to configure the time-out values.
  4. Indicate values for R_A_TOV (Resource Allocation Time Out Value), D_S_TOV (Distributed Services Time Out Value), and E_D_TOV (Error Detect Time Out Value).
  5. Click Apply.
  6. Click Close to close the dialog box.


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