PLANET XGS3-24042 - Manual (Page 592)

65-6
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
65.4 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);
 And then, make sure that IPv6 forwarding function is enabled (use ipv6 enable command);
 Besides, make sure that VRRPv3 protocol is enable on the interface;
 Check whether the time of timer in different routers (or layer-three Ethernet switch) within the same
backup group is the same;
 Check whether the virtual IPv6 addresses in the same backup group is the same.