Tp-Link T1700G-28TQ V2 — настройка обнаружения петель в сетевых интерфейсах [150/772]

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Managing Physical Interfaces Configuration Examples

Configuration Guide

125

7.3 Example for Loopback Detection

7.3.1 Network Requirements

As shown below, Switch A is a convergence-layer switch connecting several access-

layer switches. Loops can be easily caused in case of misoperation on the access-

layer switches. If there is a loop on an access-layer switch, broadcast storms will occur

on Switch A or even in the entire network, creating excessive traffic and degrading the

network performance.

To reduce the impacts of broadcast storms, users need to detect loops in the network via

Switch A and timely block the port on which a loop is detected.

Figure 7-8 Network Topology

Switch A

Management Host

Access-layer Switches

Gi1/0/1

Gi1/0/2

Loop

Gi1/0/3

7.3.2 Configuration Scheme

Enable loopback detection on ports 1/0/1-3 and configure SNMP to receive the

notifications. For detailed instructions about SNMP, refer to

Configuring SNMP & RMON

Here we introduce how to configure loopback detection and monitor the detection result

on the management interface of the switch.

Demonstrated with T1700G-28TQ, the following sections provide configuration procedure

in two ways: using the GUI and using the CLI.

7.3.3 Using the GUI

1) Choose the menu Switching > Port > Loopback Detection to load the configuration

page.

2) In the Global Config section, enable loopback detection and web refresh globally. Keep

the default parameters and click Apply.