Show Loop-Protection - Allied Telesis IE220 Series Manual

S C
WITCHING OMMANDS
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SHOW LOOP PROTECTION

show loop-protection

Overview Use this command to display the current configuration and operation of loop
protection on the device.
show loop-protection [interface <port-list>] [counters]
Syntax
Mode User Exec and Privileged Exec
Usage notes If transmitting of loop-detection frames takes too long, then it can time out and the
switch may not send all loop-detection frames, and therefore may not detect a
loop. This can happen in some networks with large numbers of loop-protection
instances with short loop-detection intervals. In this case, the switch generates a
log message:
"Sending loop-detection frames taking longer than expected - too many
instances?"
To prevent this log message, you can either:
•
•
The show loop-protection command shows the total number of loop-protection
instances (one instance per VLAN per port) and the number of packets that need
to be transmitted by the device each second (the Total Instances entry). It also
shows the number of packets that timed out for each port (the Timeout entry). The
show loop-protection counter command shows the number of timeouts per
VLAN for each port.
Example To display the current configuration status, use the command:
awplus#
C613-50644-01 Rev B
Parameter Description
interface
The interface selected for display.
<port-list>
A port, a port range, or an aggregated link.
counters
Displays counter information for loop protection.
change the loop-detection frame interval to a higher value to reduce the
number of packets that are sent in each block. To do this, use the command
loop-protection loop-detect ldf-interval <period>, or
reduce the number of instances by reducing the number of VLANs per port
or by removing loop protection from some ports.
show loop-protection
Command Reference for IE220 Series
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
552