Timer Configuration Across All Vsans; Timer Configuration Per-Vsan - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 29 Advanced Features and Concepts
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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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
Caution
switch are suspended.
If a VSAN is not specified when you change the timer value, the changed value is applied to all VSANs
Note
in the switch.
To configure Fibre Channel timers across all VSANs, follow these steps:
Command
Step 1
switch# config t
switch(config)
Step 2
switch(config)# fctimer R_A_TOV 6000

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.
You cannot perform a nondisruptive downgrade to any earlier version that does not support per-VSAN
Caution
FC timers.
This configuration must be propagated to all switches in the fabric—be sure to configure the same value
Note
in all switches in the fabric.
OL-16184-01, Cisco MDS SAN-OS Release 3.x
About fctimer Distribution, page 29-6
Enabling or Disabling fctimer Distribution, page 29-6
Committing fctimer Changes, page 29-6
Discarding fctimer Changes, page 29-7
Fabric Lock Override, page 29-7
Database Merge Guidelines, page 29-7
Displaying Configured fctimer Values, page 29-8
Purpose
Enters configuration mode.
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.
Cisco MDS 9000 Family CLI Configuration Guide
Fibre Channel Time Out Values
29-5