Chapter 80 Loop Guard
OLT2406 User’s Guide
586
80.2 Loopguard Commands
Use these commands to configure the OLT to guard against loops on the edge of your network. The OLT
shuts down a port if the OLT detects that packets sent out on the port loop back to the OLT.
Table 301 Loopguard Commands
COMMAND DESCRIPTION M P
show loopguard
Displays which ports have loopguard enabled
as well as their status.
E3
loopguard
Enables loopguard on the OLT. C 13
no loopguard
Disables loopguard on the OLT. C 13
interface port-channel <aid>
Enters config-interface mode for the specified
port(s).
aid: <msc|ge|pon>-<slot>-<port>
C13
loopguard
Enables the loopguard feature on the port(s).
You have to enable loopguard on the OLT as
well. The OLT shuts down a port if the OLT
detects that packets sent out on the port loop
back to the OLT.
C13
no loopguard
Disables the loopguard feature on the port(s). C 13
no loopguard vlan
Clears the VLAN ID. C 13
loopguard vlan <1~4094>
Specifies the VLAN ID. It’s the VLAN group that
loop guard detection packets will be sent to.
C13
loopguard detection-time <1~120>
Specifies the time interval (from 1 to 120
seconds) at which the OLT sends loop guard
detection packets. A loop guard detection
packet is to detect whether there’s a loop on a
port or not.
C13
no loopguard detection-time
Resets the time interval to default (0). C 13
clear loopguard
Clears loopguard counters. E 13
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