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Example of VRRP backup group configuration in multiple VLAN

Networking requirements

The default gateway for hosts in VLAN 2 is 10.1.1.100 Universe 25. The default gateway for hosts in VLAN 3 is 10.1.1.200 Universe 25.

Both Switch An and Switch B belong to backup group 1 with the virtual IP address 10.1.1.100apper25 and the virtual IP address is

Backup group 2 for 10.1.1.200max 25

Switch A has higher priority than Switch B in backup group 1, and Switch B has higher priority than Switch in backup group 2.

A, so as to ensure that the hosts in VLAN 2 and VLAN 3 communicate through Switch An and Switch B respectively. When Switch An or Switch B fails, the host can continue to communicate through another device to avoid communication interruption.

two。 Configuration step

(1) configure Switch A

# configure VLAN 2

# create backup group 1 and configure the virtual IP address of backup group 1 as 10.1.1.100

# set the priority of Switch An in backup group 1 to 110, which is higher than the priority of Switch B, to ensure that Switch A becomes the Master in backup group 1 and is responsible for forwarding traffic.

# configure VLAN 3

# create backup group 2 and configure the virtual IP address of backup group 2 to be 10.1.1.200

(2) configure Switch B

# configure VLAN 2

# create backup group 1 and configure the virtual IP address of backup group 1 as 10.1.1.100

# configure VLAN 3

# create backup group 2 and configure the virtual IP address of backup group 2 to be 10.1.1.200

# set the priority of Switch B in backup group 2 to 110, which is higher than that of Switch A, to ensure that Switch B becomes a Master in backup group 2 and is responsible for forwarding traffic

(3) configure Switch C

(4) configure Switch D

Verify the configuration (you can view the results of the configuration and the default network through the display vrrp verbose command

The host with a connection of 10.1.1.200 Switch 25 accesses Internet through Web B)

SwitchA

SwitchB

Hosts with a default gateway of 10.1.1.200max 25 access Internet through Switch B.

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