Dell N1100-ON Reference Manual page 495

When the interval expires, the system examines the error disabled interfaces
and recovers them if recovery for the indicated cause is enabled. Only a single
timer is used and recovery occurs when the timer expires, not when the
interface time expires. The recovery delay time indicates the number of
seconds until the interface is eligible for recovery if auto-recovery is enabled
for the indicated cause.
Interfaces recovered by auto-recovery issue a log message indicating that
recovery is being attempted.
<13> Sep 25 14:38:32 10.130.135.107-1 UDLD[nim_t]: udld_util.c(1829) 87 %%
Interface Gi1/0/1 is restored from the error disabled state.
The possible causes for error disabled interfaces are:
Term
ARP inspection
BPDU Guard
Broadcast Storm
BPDU Storm
DHCP Rate Limit
Loop Protection
Multicast Storm
SFP Mismatch
SFP Plus Mismatch SFP Plus mismatch auto-recovery.
UDLD
Unicast Storm
Port MAC Locking
Denial Of Service
Time interval for auto-recovery in seconds.
Command History
Implemented in version 6.3.0.1 firmware.
Description
ARP inspection auto-recovery.
BPDU guard auto-recovery.
Broadcast storm auto-recovery.
BPDU storm auto-recovery.
DHCP rate limit auto-recovery.
Loop protection auto-recovery.
Multicast storm auto-recovery.
SFP mismatch auto-recovery.
UDLD auto-recovery.
Unicast storm auto-recovery.
Port security auto-recovery.
Denial of Service auto-recovery.
Layer 2 Switching Commands
495