4 – Managing Switches
Configuring a Switch
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4.6.3
Advanced Switch Properties
The Advanced Switch Properties dialog, shown in
Figure 4-8
, enables you to set
the timeout values. The Advanced Switch Properties dialog is available for only
the entry switch. The switch will automatically be taken offline temporarily and will
be restored to its original state after the changes are completed. To open the
Advanced Switch Properties dialog, open the Switch menu and select
Advanced
Switch Properties
. After making changes, click the
OK
button to put the new
values into effect.
Figure 4-8. Advanced Switch Properties Dialog
4.6.3.1
Timeout Values
The switch timeout values determine the timeout values for all ports on the switch.
The timeout values must be the same for all switches in the fabric.
R_A_TOV (Resource Allocation Timeout) — the maximum time a frame
could be delayed and still be delivered. The default is 10000 milliseconds.
E_D_TOV (Error Detect Timeout) — the maximum round trip time that an
operation between two N_Ports could require. The default is 2000
milliseconds.
NOTE:
Mismatched timeout values will disrupt the fabric. These should not be
changed unless absolutely necessary. The switch is temporarily placed
offline to change these values.
