Auto Detect Implementation In Vlan Interface Backup - H3C S5600 Series Operation Manual

Figure 1-1 The uplink of the master switch fails
Using VRRP together with the Auto Detect function, you can change the priority of a switch according to
the uplink status. On the master switch of the VRRP backup group, you can use the Auto Detect
function to detect the paths between the master switch and other networks, and control the priority of
the master switch according to the returned reachable/unreachable information, thus implementing
automatic master/backup switchover and guaranteeing the communication is not interrupted.
The master switch keeps as Master when the detected group is reachable.
The priority of the master switch decreases and thus becomes a Backup when the detected group
is unreachable.
You need to create the detected group and perform VRRP-related configurations before the following
operations.
Follow these steps to configure the auto detect function for VRRP:
To do...
Enter system view
Enter VLAN interface view
Enable the auto detect function for
VRRP

Auto Detect Implementation in VLAN Interface Backup

VLAN interface backup means backing up the VLAN interfaces on a devices. Usually, the master VLAN
interface transmits traffic, while the backup VLAN interfaces stay standby. When the master VLAN
interface or the link connected to the VLAN interface fails and thus cannot transmit traffic, the backup
VLAN interface can be used for communication. In this way, the network reliability is improved.
Use the command...
system-view
interface Vlan-interface vlan-id
vrrp vrid virtual-router-id track detect-group
group-number [ reduced value-reduced ]
1-4
Remarks
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Required