Cisco Nexus 5000 Series Switch Fabric Manager Software Configuration Guide, NX-OS 4.0 (OL-16598-01, June 2008)

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Nexus 5000 Series Switch Fabric Manager Software Configuration Guide
OL-16598-01
Chapter 31 Troubleshooting Your Fabric
Fibre Channel Timeout Values
Step 6 Click Close to close this dialog box.
Fibre Channel Timeout Values
You can modify Fibre Channel protocol related timer values for the switch by configuring the following
timeout values (TOVs):
• 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.
Note The fabric stability TOV (F_S_TOV) constant cannot be configured.
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.
To configure timeouts using Fabric Manager, perform this task:
Step 1 Choose SAN in the Logical Domains pane to include all VSANs.
Step 2 Expand Switches, expand FC Services, and choose Timers & Policies in the Physical Attributes pane.
You see the timers for switches in the Information pane.
Step 3 Click Change Timeouts to configure the timeout values.
You see the Change Timeouts dialog box as shown in Figure 31-11.
Figure 31-11 Change Timeouts Dialog Box
Step 4
Indicate values for R_A_TOV (Resource Allocation Timeout Value), D_S_TOV (Distributed Services
Timeout Value), and E_D_TOV (Error Detect Timeout Value).
Step 5 Click Apply.