H3C Technologies H3C S12500 Series Switches - Manual (Page 232)

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# Display the routing table of Switch A.
[SwitchA] display ip routing-table
Routing Tables: Public
Destinations : 10 Routes : 10
Destination/Mask Proto Pre Cost NextHop Interface
10.1.1.0/24 Direct 0 0 10.1.1.1 Vlan2
10.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.2.1.0/24 Static 60 0 10.1.1.2 Vlan2
10.3.1.0/24 Direct 0 0 10.3.1.1 Vlan3
10.3.1.1/32 Direct 0 0 127.0.0.1 InLoop0
20.1.1.0/24 Direct 0 0 20.1.1.1 Vlan6
20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
30.1.1.0/24 Static 80 0 10.3.1.3 Vlan3
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
The output shows the NQA test result: the master route is unavailable (the status of the track entry
is Negative), and the backup static route takes effect and Switch A forwards packets to
30.1.1.0/24 through Switch C.
# 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.
[SwitchA] 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 Switch D is similar to that on Switch 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.
[SwitchB] 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