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Auto Recovery Configuration
Table 15. Auto Recovery Configuration Fields
If you modify these settings, click
Apply
to save the changes for the current boot session. The
changes take effect immediately but are not retained across a switch reset unless you click
Save Con-
figuration
.
Field
Description
Auto Recovery Components
BPDU Guard
When BPDU Guard Auto Recovery is enabled, the port will be enabled once the configured
Recovery Time expires. If the port receives another BPDU, it will be disabled again.
If the BPDU Guard Auto Recovery mode is disabled, a port that has received a BPDU and
has been placed in the diagnostically disabled state will remain in that state until an
administrator manually enables it. BPDU Guard Auto Recovery is disabled by default.
BPDU Rate Limit
If a port receives BPDUs at a rate greater than or equal to 12–17 BPDUs per second for three
consecutive seconds, that port will be placed in the diagnostically disabled state.
When BPDU Rate Limit Auto Recovery is enabled, the port will be enabled once the
configured Recovery Time expires. If the port continues to receive BPDUs at a rate greater
than or equal to 12–17 BPDUs per second for three consecutive seconds, that port will be
disabled again. BPDU Rate Limit Auto Recovery is disabled by default.
Auto Recovery Parameters
Recovery Time
This configures the Auto Recovery time interval. The Auto Recovery time interval is common
for both BPDU Guard and BPDU Rate Limit. The default value of the timer is 300 seconds
and the range is from 30 to 86400 seconds.
Interface Status
Interface
The interface that is diagnostically disabled. If no interfaces are in the diagnostically disabled
state, the table is blank.
Admin Mode
The administrative mode of the interface.
Port Status
Indicates whether the link is up or down. The link is the physical connection between the port
or trunk and the interface on another device.
Reason
If the switch detects an error condition for an interface, the switch puts the interface in the
diagnostically disabled state, meaning that it has been intentionally disabled because it has
encountered errors. The reasons that the interface can go into a diagnostically disabled state
include the following:
BPDU Guard
BPDU Storm
Time to Recover
When Auto Recovery is enabled and the interface is placed in the diagnostically disabled
state, then a recovery timer starts for that interface. Once this timer expires, the device checks
if the interface is in the diagnostically disabled state. If yes, then the device enables the
diagnostically disabled interface.
