ZyXEL Communications MES-2110 Guia do Utilizador descarregar pdf (Página 61)

Chapter 7 Loop Detection

MES-2110 User’s Guide

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.

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ZyXEL Communications MES-2110 Guia do Utilizador Página 61