CLI Guide

Layer 2 Switching Commands 410
The link status field shows the hardware status followed by the keepalive
status. The hardware status show “Up” when link is detected, “Down” when
no link is detected, “Err-disable” when the port is error-disabled, and “Shut”
when the port is administratively shut down.
The keepalive status shows “None” when keepalives are disabled or the port is
down, “Up” when keepalives are enabled and no loop is detected and “Down”
when keepalives are enabled and a loop is detected. Some example values are:
Link Status : ................................. Up/Up
Link detected, keepalives enabled, no loop detected
Link Status : ................................. Shut/None
Port is administratively disabled
Link Status : ................................. Down/None
No link detected
Link Status : ................................. Err-disable/Down
Interface is error disabled due to loop detection
Link Status : ................................. Err-disable/None
The interface is error disabled due to a cause other than loop detection.
The possible causes for error disabled interfaces are:
Term Parameter Description
ARP inspection arp-inspection ARP inspection auto-recovery.
BPDU Guard bpduguard BPDU guard auto-recovery.
Broadcast
Storm
bcast-storm Broadcast storm auto-recovery.
BPDU Storm bpdustorm BPDU storm auto-recovery.
Denial of
Service
denial-of-
service
Denial of Service auto-recovery.
DHCP Rate
Limit
dhcp-rate-limit DHCP rate limit auto-recovery.
Loop Protection loop-protect Loop protection auto-recovery.
Port MAC
Locking
port-security Port security MAC locking auto-recovery.