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The virtual IPv6 address you configure must be the same as the IPv6 subnet to which the interface belongs.
Although R2 and R3 have the same default, priority (100), R2 is elected master in the VRRPv3 group because
the TenGigE 0/0 interface has a higher IPv6 address than the TenGigE 1/0 interface on R3.
Router 2
R2(conf)#interface tengigabitethernet 0/0
R2(conf-if-te-0/0)#no ip address
R2(conf-if-te-0/0)#ipv6 address 1::1/64
R2(conf-if-te-0/0)#vrrp-group 10
R2(conf-if-te-0/0-vrid-10)#virtual-address fe80::10
R2(conf-if-te-0/0-vrid-10)#virtual-address 1::10
R2(conf-if-te-0/0-vrid-10)#no shutdown
R2(conf-if-te-0/0)#show config
interface TenGigabitEthernet 0/0
ipv6 address 1::1/64
vrrp-group 10
priority 100
virtual-address fe80::10
virtual-address 1::10
no shutdown
R2(conf-if-te-0/0)#end
ON MASTER
==========
Dell#show vrrp
------------------
TenGigabitEthernet 0/1, IPv4 VRID: 1, Version: 2, Net: 1.1.1.1
VRF: 0 default
State: Master, Priority: 100, Master: 1.1.1.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 36, Gratuitous ARP sent: 1
Virtual MAC address:
00:00:5e:00:01:01
Virtual IP address:
1.1.1.100
Authentication: (none)
Dell#
ON STANDBY
===========
Dell#show vrrp
------------------
TenGigabitEthernet 0/1, IPv4 VRID: 1, Version: 2, Net: 1.1.1.2
VRF: 0 default
State: Backup, Priority: 100, Master: 1.1.1.1
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 65, Bad pkts rcvd: 0, Adv sent: 0, Gratuitous ARP sent: 0
Virtual MAC address:
00:00:5e:00:01:01
Virtual IP address:
1.1.1.100
Authentication: (none)
Dell#
Router 3
R3(conf)#interface tengigabitethernet 1/0
R3(conf-if-te-1/0)#no ipv6 address
R3(conf-if-te-1/0)#ipv6 address 1::2/64
R3(conf-if-te-1/0)#vrrp-group 10
R2(conf-if-te-1/0-vrid-10)#virtual-address fe80::10
R2(conf-if-te-1/0-vrid-10)#virtual-address 1::10
R3(conf-if-te-1/0-vrid-10)#no shutdown
Virtual Router Redundancy Protocol (VRRP)
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Troubleshooting
