R0106-HP MSR Router Series High Availability Configuration Guide(V7)

IPv6 VRRP configuration examples

Single VRRP group configuration example

Network requirements

Router A and Router B form a VRRP group, and use the virtual IP addresses 1::10/64 and FE80::10 to

provide gateway service for the subnet where Host A resides, as shown in Figure 17.

Host A lear

ns 1::10/64 as its default gateway from RA messages sent by the routers.

Router A operates as the master to forward packets from Host A to Host B. When Router A fails, Router

B takes over to forward packets for Host A.

Figure 17 Network diagram

Configuration procedure

1. Configure Router A:

# Specify an IPv6 address for Router A.

<RouterA> system-view

[RouterA] interface gigabitethernet 2/0/1

[RouterA-GigabitEthernet2/0/1] ipv6 address fe80::1 link-local

[RouterA-GigabitEthernet2/0/1] ipv6 address 1::1 64

# Create VRRP group 1, and set its virtual IPv6 addresses to FE80::10 and 1::10.

[RouterA-GigabitEthernet2/0/1] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[RouterA-GigabitEthernet2/0/1] vrrp ipv6 vrid 1 virtual-ip 1::10

# Assign Router A a higher priority than Router B in VRRP group 1, so Router A can become the

master.

[RouterA-GigabitEthernet2/0/1] vrrp ipv6 vrid 1 priority 110

# Configure Router A to operate in preemptive mode, so it can become the master whenever it

operates correctly, and set the preemption delay to 5 seconds to avoid frequent status switchover.

[RouterA-GigabitEthernet2/0/1] vrrp ipv6 vrid 1 preempt-mode delay 5

# Enable Router A to send RA messages, so Host A can learn the default gateway address.

[RouterA-GigabitEthernet2/0/1] undo ipv6 nd ra halt