API Guide

Router B receives and forwards packets on interface ethernet 1/1/5. Until Router A resumes operation, VRRP allows
Router B to provide uninterrupted service to the users on the LAN segment accessing the Internet.
When the interface that Router A uses to provide gateway services (ethernet 1/1/7) goes down, Router B does not take over
automatically. For Router B to become the master router, you must configure interface tracking. When you configure tracking
on the interface and the interface goes down, the VRRP group's priority decreases. The lowered priority of the VRRP group
triggers an election and Router B becomes the master router. See Interface/object tracking for more information.
Create virtual router
VRRP uses the VRID to identify each virtual router configured. Before using VRRP, you must configure the interface with the
primary IP address and enable it.
● Create a virtual router for the interface with the VRRP identifier in INTERFACE mode, from 1 to 255.
vrrp-group vrrp-id
● Delete a VRRP group in INTERFACE mode.
no vrrp-group vrrp-id
Configure VRRP
OS10(config)# interface ethernet 1/1/5
OS10(conf-if-eth1/1/5)# vrrp-group 254
Verify VRRP
OS10(conf-eth1/1/5-vrid-254)# do show running-configuration
...
!
interface ethernet 1/1/5
ip address 10.10.10.1/24
!
vrrp-group 254
no shutdown
...
Group version
Configure a VRRP version for the system. Define either VRRPv2 — vrrp version 2 or VRRPv3 — vrrp version 3.
● Configure the VRRP version for IPv4 in INTERFACE mode.
vrrp version
Configure VRRP version 3
OS10(config)# vrrp version 3
1. Set the switch with the lowest priority to vrrp version 2.
2. Set the switch with the highest priority to vrrp version 3.
3. Set all switches from vrrp version 2 to vrrp version 3.
Migrate IPv4 group from VRRPv2 to VRRPv3
OS10_backup_switch1(config)# vrrp version 2
OS10_backup_switch2(config)# vrrp version 2
Set master switch to VRRPv3
OS10_master_switch(config)# vrrp version 3
764
Layer 3