Specifications

show loop-detection
584
Item Meaning Displayed information
Status Port state Up: Indicates that the port status is Up.
Down: The port is in Down status.
Down(loop): The port status is Down due to the
L2 loop detection functionality.
Type Port type send-inact:
Detection-frame-sending-and-port-blocking port
send: Detection-frame-sending port
trap: Detecting port
exception: Out-of-scope port
uplink: Uplink port
DetectCnt Number of current detections Displays the number of L2 loop detections.
For an uplink port, -- is displayed. The number of
detections on the uplink port is counted on the
sending port.
The number of detections is updated until it
reaches 10000.
RestoringTimer Time remaining until automatic
recovery (in seconds)
The time before the port is activated automatically
is displayed.
-- is displayed if a port is not automatically
restored.
#2
SourcePort L2 loop detection frame
Sending port
The sending port used when an L2 loop detection
frame was last received.
<IF#>: Port number
ChGr:<Channel group#>: Channel group number
For the receive uplink port, (U) is displayed.
-- is displayed if no L2 loop detection frame has
been received.
Vlan L2 loop detection frame
Source VLAN ID
Displays the source VLAN ID when an L2 loop
detection frame was last received.
#1: When the loop-detection hold-time configuration command is omitted
#2: When the
loop-detection auto-restore-time configuration command is omitted
#3: Total number in the VLANs set for the applicable physical ports or channel groups
Impact on communication
None
Response messages
Table 34-2 List of response messages for the show loop-detection command
Message Description
Can't execute. The command could not be executed. Re-execute the
command.
No corresponding port information. No port and channel group information for L2 loop detection
was found.