Network requirements – H3C Technologies H3C MSR 50 User Manual

Page 58

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# When the master route fails, the hosts in 20.1.1.0/24 can still communicate with the hosts in

30.1.1.0/24.

[RouterA] ping -a 20.1.1.1 30.1.1.1

PING 30.1.1.1: 56 data bytes, press CTRL_C to break

Reply from 30.1.1.1: bytes=56 Sequence=1 ttl=254 time=2 ms

Reply from 30.1.1.1: bytes=56 Sequence=2 ttl=254 time=1 ms

Reply from 30.1.1.1: bytes=56 Sequence=3 ttl=254 time=1 ms

Reply from 30.1.1.1: bytes=56 Sequence=4 ttl=254 time=2 ms

Reply from 30.1.1.1: bytes=56 Sequence=5 ttl=254 time=1 ms

--- 30.1.1.1 ping statistics ---

5 packet(s) transmitted

5 packet(s) received

0.00% packet loss

round-trip min/avg/max = 1/1/2 ms

# The output on Router B is similar to that on Router A. When the master route fails, the hosts in
30.1.1.0/24 can still communicate with the hosts in 20.1.1.0/24.

[RouterB] ping -a 30.1.1.1 20.1.1.1

PING 20.1.1.1: 56 data bytes, press CTRL_C to break

Reply from 20.1.1.1: bytes=56 Sequence=1 ttl=254 time=2 ms

Reply from 20.1.1.1: bytes=56 Sequence=2 ttl=254 time=1 ms

Reply from 20.1.1.1: bytes=56 Sequence=3 ttl=254 time=1 ms

Reply from 20.1.1.1: bytes=56 Sequence=4 ttl=254 time=1 ms

Reply from 20.1.1.1: bytes=56 Sequence=5 ttl=254 time=1 ms

--- 20.1.1.1 ping statistics ---

5 packet(s) transmitted

5 packet(s) received

0.00% packet loss

round-trip min/avg/max = 1/1/2 ms

VRRP-Track-interface management collaboration configuration

example

In this example, the master monitors the uplink interface.

Network requirements

As shown in

Figure 16

, Host A needs to access Host B on the Internet. The default gateway of Host A is

10.1.1.10/24.
Router A and Router B belong to VRRP group 1, whose virtual IP address is 10.1.1.10.
When Router A operates correctly, packets from Host A to Host B are forwarded through Router A. When

VRRP detects that a fault is on the uplink interface of Router A through the interface management module,

packets from Host A to Host B are forwarded through Router B.

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