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286 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Error disable recovery
8
Error disable recovery
In case a BPDU guard violation occurs, a port is placed into an errdisable state which is functionally
equivalent to a Disable state. Once in an errdiable state, it remains in that state until one of the
following methods is used to return the port to an Enabled state.
1. Manually disabling and enabling that interface
2. Automatically, through the errdisable recovery mechanism
The errdisable recovery interval command is used to configure a time-out for ports in errdisable
state, after which the ports are re-enabled automatically.
When BPDU guard puts a port into errdisabled state, the port remains in errdisabled state unless it
is enabled manually by issuing a disable command and then the enable command on the
associated interface or you have errdisable recovery turned on. The errdisable command allows
you to choose the type of error that automatically reenables the port after a specified amount of
time.
Enabling error disable recovery
To enable errdisable recovery for BPDU Guard, enter a command such as the following.
PowerConnect(config)#errdisable recovery cause bpduguard
To enable error disable recovery for any reason, enter a command such as the following.
PowerConnect(config)#errdisable recovery cause all
Syntax: errdisable recovery [cause bpduguard l all]
The cause is the reason why the port is in the errdisable state. Valid values are bpduguard and all.
Use the bpduguard parameter to allow the port to recover from the errdisabled state, if the state
was caused by a BPDU guard violation.
The all parameter allows ports to recover from an errdisabled state caused by any reason, for
example, a BPDU Guard violation or loop detection violation.
Setting the recovery interval
The errdisable recovery interval command allows you to configure a timeout for ports in errdisable
state, after which the ports are reenabled automatically. To set the errdisable recovery time-out
interval, enter a command such as the following.
PowerConnect(config)#errdisable recovery interval 20
Syntax: [no] errdisable recovery interval <seconds>
The seconds paramter allows you to set the timeout value for the recovery mechanism when the
port is in an errdisabled state. Once this timeout value expires, the ports are automatically
re-enabled. Valid values are from 10 to 65535 seconds (10 seconds to 24 hours).