Manual

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As shown in graph, switch A and switch B are backups to each other, switch A is the master of
backup group 1 and a backup of backup group 2. Switch B is the master of backup group 2
and a Backup of backup group 1. The IPv6 addresses of switch A and switch B are “IPv6_A”
and “IPv6_ B” respectively (it is recommended that IPv6_A and IPv6_B are in the same
segment), the virtual IPv6 address of backup group 1 and backup group are “V_IPv6_C” and
“V_IPV6_D” respectively, and the default IPv6 gateway address are configured as “V_IPv6_C”
and “V_IPv6_D” respectively (in reality, the IPv6 gateway address of hosts are usually learnt
automatically via router advertisements, thus, the IPv6 next hop of the hosts will have some
randomness). Doing this will not only implement router backup but also the flow sharing
function in the LAN.
The configuration of SwitchA:
SwitchA (config)#ipv6 enable
SwitchA (config)#interface vlan 1
SwitchA (config)#router ipv6 vrrp 1
SwitchA (config-router)#virtual-ipv6 fe80::2 interface vlan 1
SwitchA (config-router)#priority 150
SwitchA (config-router)#enable
SwitchA (config)#router ipv6 vrrp 2
SwitchA (config-router)#virtual-ipv6 fe80::3 interface vlan 1
SwitchA (config-router)#enable
The configuration of SwitchB:
SwitchB (config)# ipv6 enable
SwitchB (config)# interface vlan 1
SwitchB (config)# router ipv6 vrrp 2
SwitchB (config-router)# virtual-ipv6 fe80::3 interface vlan 1
SwitchB (config-router)# priority 150
SwitchB (config-router)# enable
SwitchB (config)# router ipv6 vrrp 1
SwitchB (config-router)# virtual-ipv6 fe80::2 interface vlan 1
SwitchB (config-router)# enable
32.4 VRRPv3 Troubleshooting
When configuring and using VRRPv3 protocol, it might operate abnormally because of
incorrect physical connections and configuration. So, users should pay attention to the
following points:
First, the physical connections should be correct;
Next, the interface and link protocol are UP (use show ipv6 interface command);