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Chapter 22 Loop Guard
22.2 Loop Guard Setup
Click Advanced Application > Loop Guard in the navigation panel to display the screen as
shown. This is where you can enable the ONU's loop guard feature, as well as configure the
loop guard feature on an individual port-by-port basis.
The loop guard feature can not be enabled on the ports that have Spanning
Tree Protocol (RSTP or MSTP) enabled.
Figure 91 Advanced Application > Loop Guard
The following table describes the labels in this screen.
Table 62 Advanced Application > Loop Guard
LABEL
Active
Port
*
Active
172
DESCRIPTION
Select this option to enable loop guard on the ONU.
The ONU generates syslog, internal log messages as well as SNMP traps when it
shuts down a port via the loop guard feature.
This field displays a port number.
Use this row to make the setting the same for all ports. Use this row first and then
make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you
make them.
Select this check box to enable the loop guard feature on this port. The ONU sends
probe packets from this port to check if the ONU it is connected to is in loop state. If
the ONU that this port is connected is in loop state the ONU will shut down this port.
Clear this check box to disable the loop guard feature.
ONU User's Guide
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