Brocade FastIron Ethernet Switch Administration Guide - Manual (Page 82)

By default, the port will send test packets every one second, or the number of seconds specified by
the loop-detection-interval command. Refer to
Configuring a global loop detection interval on page
82.
Syntax: [no] loop-detection
Use the [no] form of the command to disable loop detection.
Configuring a global loop detection interval
The loop detection interval specifies how often a test packet is sent on a port. When loop detection is
enabled, the loop detection time unit is 0.1 second, with a default of 10 (one second). The range is
from 1 (one tenth of a second) to 100 (10 seconds). You can use the show loop-detection status
command to view the loop detection interval.
To configure the global loop detection interval, enter a command similar to the following.
device(config)# loop-detection-interval 50
This command sets the loop-detection interval to 5 seconds (50 x 0.1).
To revert to the default global loop detection interval of 10, enter one of the following.
device(config)# loop-detection-interval 10
OR
device(config)# no loop-detection-interval 50
Syntax: [no] loop-detection-interval number
where number is a value from 1 to 100. The system multiplies your entry by 0.1 to calculate the
interval at which test packets will be sent.
Configuring the device to automatically re-enable ports
To configure the Brocade device to automatically re-enable ports that were disabled because of a loop
detection, enter the errdisable recovery cause loop-detection command.
device(config)# errdisable recovery cause loop-detection
The above command will cause the Brocade device to automatically re-enable ports that were
disabled because of a loop detection. By default, the device will wait 300 seconds before re-enabling
the ports. You can optionally change this interval to a value from 10 to 65535 seconds. Refer to
Specifying the recovery time interval on page 82.
Syntax: [no] errdisable recovery cause loop-detection
Use the [no] form of the command to disable this feature.
Specifying the recovery time interval
The recovery time interval specifies the number of seconds the Brocade device will wait before
automatically re-enabling ports that were disabled because of a loop detection. (Refer to
Configuring
the device to automatically re-enable ports on page 82.) By default, the device will wait 300 seconds.
To change the recovery time interval, enter a command such as the following.
device(config)# errdisable recovery interval 120
Configuring a global loop detection interval
82 FastIron Ethernet Switch Administration Guide
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