Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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43-2
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 43 Advanced Fibre Channel Features and Concepts
Fibre Channel Timeout Values
• Verifying Configured fctimer Values, page 43-5
Timer Configuration Across All VSANs
You can modify Fibre Channel protocol related timer values for the switch.
Caution The D_S_TOV, E_D_TOV, and R_A_ TOV values cannot be globally changed unless all VSANs in the
switch are suspended.
Note If a VSAN is not specified when you change the timer value, the changed value is applied to all VSANs
in the switch.
To configure Fibre Channel timers across all VSANs, perform this task:
Timer Configuration Per-VSAN
You can also issue the fctimer for a specified VSAN to configure different TOV values for VSANs with
special links such as Fibre Channel. 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.
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.
To configure per-VSAN Fibre Channel timers, perform this task:
:
Command Purpose
Step 1
switch# configure terminal
Enters configuration mode.
Step 2
switch(config)# fctimer R_A_TOV timeout
Configures the R_A_TOV timeout value for all
VSANs. The units is milliseconds.
This type of configuration is not permitted unless all
VSANs are suspended.
Command Purpose
Step 1
switch# configuration terminal
Enters configuration mode.
Step 2
switch(config#)# fctimer D_S_TOV timeout
vsan vsan-id
Configures the D_S_TOV timeout value (in
milliseconds) for the specified VSAN. Suspends the
VSAN temporarily. You have the option to end this
command, if required.