ZyXEL Communications XGS4600 Series User Manual page 333

The following table describes the labels in this screen.
Table 143 Advanced Application > Loop Guard
LABEL DESCRIPTION
Active Select this option to enable loop guard on the Switch.
The Switch generates syslog, internal log messages as well as SNMP traps when it shuts down a
port through the loop guard feature.
SLOT This field appears only in stacking mode. Click the drop-down list to choose the slot number of
the Switch in a stack.
Port This field displays the port number. In stacking mode, the first number represents the slot ID and
the second is the port number. Please note that the default stacking ports (the last two ports of
your Switch) cannot be configured. They are reserved for stacking only.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row first to set
the common settings 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.
Active Select this check box to enable the loop guard feature on this port. The Switch sends broadcast
and multicast probe packets from this port to check if the switch it is connected to is in loop
state. If the switch that this port is connected is in loop state the Switch will shut down this port.
Clear this check box to disable the loop guard feature.
Apply Click Apply to save your changes to the Switch's run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save
your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.
Chapter 30 Loop Guard
XGS4600 Series User's Guide
333