Before configuring VRRP-E load-balancing, VRRP-E must be configured on all devices in the VRRP-E session.
Perform this task on all backup VRRP-E Layer 3 devices to allow load sharing within a VRRP extended group.
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From privileged EXEC mode, enter global configuration mode.
device# configure terminal
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Globally enable VRRP-E.
device(config)# protocol vrrp-extended
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Enter the
interface ve
command with an associated VLAN number.
device(config)# interface ve 2019
In this example, virtual Ethernet (ve) configuration mode is entered and the interface is assigned with a VLAN number of 2019.
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Enter an IP address for the interface using the
ip address
command.
device(config-ve-2019)# ip address 192.168.4.1/24
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Enter the
vrrp-extended-group command with a number to assign a VRRP-E group to the device.
device(config-ve-2018)# vrrp-extended-group 19
In this example, VRRP-E group configuration mode is entered.
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Enter the
short-path-forwarding command with a
revert-priority value to configure the backup VRRP-E as an alternate path with a specified priority.
device(config-vrrp-extended-group-19)# short-path-forwarding revert-priority 50
When the backup device priority is higher than the configured
revert-priority value, the backup router is able to perform short-path forwarding. If the backup priority is lower than the revert priority, short-path forwarding is disabled.
In the following example, short-path forwarding is configured on a backup VRRP-E device and a revert priority threshold is configured. If the backup device priority falls below this threshold, short-path forwarding is disabled.
device# configure
device(config)# protocol vrrp-extended
device(config)# interface ve 2019
device(config-ve-2019)# ip address 192.168.4.1/24
device(config-ve-2019)# vrrp-extended-group 19
device(config-vrrp-extended-group-19)# short-path-forwarding revert-priority 50