Fibre Channel Time Out Values; Timer Configuration Across All Vsans; Timer Configuration Per-Vsan - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

Fibre Channel Time Out Values

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 .
Fibre Channel Time Out Values
You can modify Fibre Channel protocol related timer values for the switch by configuring the following
time out values (TOVs):
•
•
•
The fabric stability TOV (F_S_TOV) constant cannot be configured.
Note

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 FC 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.
Caution You cannot perform a nondisruptive downgrade to any earlier version that does not support per-VSAN
FC timers.
Cisco MDS 9000 Family Configuration Guide
25-2
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 10,000 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.
Chapter 25
Purpose
Enters configuration mode.
Configures the R_A_TOV value for all VSANs to be 6000
ms. This type of configuration is not permitted unless all
VSANs are suspended.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Advanced Features and Concepts