• Distributed services TOV (D_S_TOV)—The valid range is from 5,000 to 10,000 milliseconds. The
default is 5,000 milliseconds.
• Error detect TOV (E_D_TOV)—The valid range is from 1,000 to 4,000 milliseconds. The default is
2,000 milliseconds. This value is matched with the other end during port initialization.
• Resource allocation TOV (R_A_TOV)—The valid range is from 5,000 to 10,000 milliseconds. The
default is 10,000 milliseconds. This value is matched with the other end during port initialization.
The fabric stability TOV (F_S_TOV) constant cannot be configured.
Note
This section includes the following topics:
Timer Configuration Across All VSANs
You can modify Fibre Channel protocol related timer values for the switch.
The D_S_TOV, E_D_TOV, and R_A_ TOV values cannot be globally changed unless all VSANs in the
switch are suspended.
Caution
If a VSAN is not specified when you change the timer value, the changed value is applied to all VSANs in
the switch.
Note
To configure Fibre Channel timers across all VSANs, follow these steps:
Step 1 switch# config terminal
switch(config)
Enters configuration mode.
Step 2 switch(config)# fctimer R_A_TOV 6000
Configures the R_A_TOV value for all VSANs to be 6000 msec. This type of configuration is not permitted unless all
VSANs are suspended.
Timer Configuration Per-VSAN
You can also issue the 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.
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
300
Advanced Features and Concepts
Timer Configuration Across All VSANs
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