Huawei Quidway S3700 Series Configuration Manual page 41

Quidway S3700 Series Ethernet Switches
Configuration Guide - Reliability
Figure 2-3 Application scenario of the Monitor Link
Monitor Link group
As shown in
is enabled on Switch C and Switch D, link switching is not performed because the active link
does not fail. In this case, services are interrupted. To enable the Smart Link group to respond
more quickly to the faults of the uplink, you need to configure the Monitor Link function on the
device connected to the active link Monitor Link to monitor the status of the uplink. When a
fault occurs, the active link of the Smart Link group is blocked quickly. The Smart Link group
can then detect the fault and switch the traffic to the inactive link. This shortens the service
interruption duration.
Pre-configuration Tasks
Before configuring the basic functions of the Monitor Link group, complete the following tasks:
l
l
Data Preparation
To configure the basic functions of the Monitor Link group, you need the following data.
Issue 01 (2011-10-26)
Smart Link group
GE0/0/1
SwitchA
GE0/0/1
Smart Link group
User1
Figure 2-3, the link between Switch A and Router breaks. Although Smart Link
2.2 Configuring a Smart Link Group
Ensuring that no interface in the Monitor Link group is added to an Eth-Trunk, Smart Link
group and other Monitor Link group.
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2 Smart Link and Monitor Link Configuration
IP/MPLS
core
network
GE0/0/1
GE0/0/2
GE0/0/2
SwitchB
GE0/0/3
GE0/0/2
SwitchC
User2
Monitor Link group
Active link
Inactive link
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