3com 5500-SI Manual De Usuario

C

HAPTER

 12: VRRP C

ONFIGURATION

1 Configure Switch A.

a Configure VLAN 2.

<LSW-A> system-view

System View: return to User View with Ctrl+Z.

[LSW-A] vlan 2

[LSW-A-vlan2] port Ethernet 1/0/6

[LSW-A-vlan2] quit

[LSW-A] interface vlan-interface 2

[LSW-A-Vlan-interface2] ip address 202.38.160.1 255.255.255.0

[LSW-A-Vlan-interface2] quit

b Configure VRRP.

[LSW-A] vrrp ping-enable

[LSW-A] interface vlan 2

[LSW-A-Vlan-interface2] vrrp vrid 1 virtual-ip 202.38.160.111

[LSW-A-Vlan-interface2] vrrp vrid 1 priority 110

[LSW-A-Vlan-interface2] vrrp vrid 1 preempt-mode

2 Configure Switch B.

a 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 1/0/5

[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

b Configure VRRP.

[LSW-B] vrrp ping-enable

[LSW-B] interface vlan 2

[LSW-B-Vlan-interface2] vrrp vrid 1 virtual-ip 202.38.160.111

[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 
malfunctions, 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.

Even when Switch A is still functioning, Switch B can function as a gateway when the 
interface on Switch A and 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 additional configurations of authorization 
key and timer.