Vrrp Tracking Interface Configuration - H3C S7500 Series Operation Manual

Operation Manual – VRRP-HA
H3C S7500 Series Ethernet Switches
[LSW-A-Vlan-interface2] vrrp vrid 1 priority 110
# Configure the preemptive mode for the backup group.
[LSW-A-Vlan-interface2] vrrp vrid 1 preempt-mode
Configure Switch B.
# Configure VLAN 2.
<LSW-B> system-view
System View: return to User View with Ctrl+Z.
[LSW-B] vlan 2
[LSW-B-Vlan2] port Ethernet 2/0/5
[LSW-B-vlan2] quit
[LSW-B] interface Vlan-interface 2
[LSW-B-Vlan-interface2] ip address 202.38.160.2 255.255.255.0
[LSW-B-Vlan-interface2] quit
# Enable a backup group to respond to ping operations destined for its virtual router IP
address.
[LSW-B] vrrp ping-enable
# Create a backup group.
[LSW-B] interface vlan 2
[LSW-B-Vlan-interface2] vrrp vrid 1 virtual-ip 202.38.160.111
# Configure the preemptive mode for the backup group.
[LSW-B-Vlan-interface2] vrrp vrid 1 preempt-mode
The IP address of the default gateway of Host A can be configured to be
202.38.160.111.
Normally, Switch A functions as the gateway, but when Switch A is turned off or fails,
Switch B will function as the gateway instead.
Configure Switch A to operate in preemptive mode, so that it can resume its gateway
function as the master switch after recovery.

1.4.2 VRRP Tracking Interface Configuration

I. Network requirements
Even when Switch A is still functioning, Switch B (with another link to connect with the
outside) can function as a gateway when Switch A's interface connecting to Internet
does not function properly. This can be implemented by enabling the VLAN interface
tracking function.
The VRRP backup group ID is set to 1, with configurations of authorization key and
timer.
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Chapter 1 VRRP Configuration