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DES-7200 Configuration Guide Chapter 1 VRRP Configuration
1-25
# Configure the Accept_Mode of IPv6 VRRP
vrrp ipv6 2 accept_mode
!
We can see that Switch A and Switch B are in IPv6 VRRP backup group 1 pointing to
the same IPv6 address (2000::1) of virtual router and operating in IPv6 VRRP
preemptive mode. As for backup group 1, since the priority of Switch A in VRRP
backup group is 120 and the priority of Switch B in VRRP backup group is 100 (default
value), Switch A will act as the Master router of IPv6 VRRP backup group 1 under
normal conditions. As for backup group 2, since the priority of Switch A in IPv6 VRRP
backup group is 100 and the priority of Switch B in IPv6 VRRP backup group is 120,
and backup group 2 operates in preemptive mode, Switch B will act as the Master
router of IPv6 VRRP backup group 2 under normal conditions. For hosts in the same
LAN, Host A takes backup group 1 as the default gateway, and Host B takes backup
group 2 as the default gateway. Router redundancy is realized between Router A and
Router B, which share the traffic from LAN in the mean time to achieve load balancing.
In this example, you must manually configure the default gateway for IPv6 hosts in
order to achieve load balancing feature of IPv6 VRRP backup group.
1.5.3.4 Verification
After configuration, execute "show ipv6 vrrp" command to view VRRP configurations.
# Display the configurations of Switch A
DES-7200#show ipv6 vrrp
FastEthernet 0/1 - Group 1
State is Master
Virtual IPv6 address is as follows:
FE80::1
2000::1
Virtual MAC address is 0000.5e00.0201
Advertisement interval is 3 sec
Accept_Mode is enabled
Preemption is enabled
min delay is 0 sec
Priority is 120
Master Router is FE80::1234 (local), priority is 120
Master Advertisement interval is 3 sec
Master Down interval is 10.59 sec
FastEthernet 0/1 - Group 2
State is Backup
Virtual IPv6 address is as follows:
FE80::100
2000::100
Virtual MAC address is 0000.5e00.0202
Advertisement interval is 3 sec