ZyXEL Communications Ethernet Switch User Manual

Ethernet Switch CLI Reference Guide
177
CHAPTER 39
Loopguard Commands
Use these commands to configure the Switch to guard against loops on the edge of your
network. The Switch shuts down a port if the Switch detects that packets sent out on the port
loop back to the Switch.
39.1 Command Summary
The following section lists the commands for this feature.
Table 100 loopguard Command Summary
COMMAND DESCRIPTION M P
show loopguard Displays which ports have loopguard enabled as well as their
status.
E3
loopguard Enables loopguard on the Switch. C 13
no loopguard Disables loopguard on the Switch. C 13
interface port-channel <port-
list>
Enters config-interface mode for the specified port(s). C 13
loopguard Enables the loopguard feature on the port(s). You have to
enable loopguard on the Switch as well. The Switch shuts
down a port if the Switch detects that packets sent out on the
port loop back to the Switch.
C13
no loopguard Disables the loopguard feature on the port(s). C 13
clear loopguard Clears loopguard counters. E 13

ZyXEL Communications Ethernet Switch Specifications

General

Brand	ZyXEL Communications
Model	Ethernet Switch
Category	Network Router
Language	English