ZyXEL Communications MES-2110 User Manual page 73

The following table describes the labels in this screen.
Table 13 Configuration > Loop Detection
LABEL
Protection
MAC Address
Port
Enable/Disable
Block/Unblock
Undo
Refresh
Apply
MES-2110 User's Guide
DESCRIPTION
Select Enable or Disable to have the MES-2110 apply loop
detection.
The MES-2110 generates syslog, internal log messages as well as
SNMP traps when it shuts down a port via the loop detection
feature.
This is the MAC address of the probe frame sent by the MES-
2110. You can configure the field as a unicast or multicast MAC
address, depending on your needs.
The default MAC address is a multicast address
(01.01.02.02.03.03). Some network switch does not forward
frames with unrecognized multicast MAC address. Test frames
sent out for loop detection will be discarded by this type of switch.
Users can configure a unicast MAC address to solve this problem.
This is the port number.
Select Enable or Disable to have the MES-2110 apply loop
detection feature on this port. When the loop detection feature is
enabled, the MES-2110 sends probe frames 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 MES-2110 will shut
down this port.
When the MES-2110 detects looping, the system sets the port to
Block. Use this field to Unblock the port once you have manually
fixed the loop.
Click this to restore your last saved settings.
Click this to reset the data for the field(s).
Click Apply to save your changes to the ZyXEL Device's run-time
memory. The ZyXEL Device loses these changes if it is turned off
or loses power, so use the Save Settings link in the navigation
panel to save your changes to the non-volatile memory.
Chapter 8 Loop Detection
73