ZyXEL Communications MES-2110, User Manual

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Chapter 7 Loop Detection
MES-2110 User’s Guide
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The following table describes the labels in this screen.
Table 12 Configuration > Loop Detection
LABEL DESCRIPTION
Protection Select Enable or Disable to have the Switch apply loop
detection.
The Switch generates syslog, internal log messages as well as
SNMP traps when it shuts down a port via the loop detection
feature.
MAC Address This is the MAC address of the probe frame sent by the Switch.
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.
Port This is the port number.
Enable/Disable Select Enable or Disable to have the Switch apply loop detection
feature on this port. When the loop detection feature is enabled,
the Switch 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 Switch will shut down this
port.
Block/Unblock When the Switch detects looping, the system sets the port to
Block . Use this field to Unblock the port once you have manually
fixed the loop.
Undo Click this to restore your last saved settings.
Refresh Click this to reset the data for the field(s).
Apply Click this to save your changes.