H3C S9500E Series Configuration Manual page 186

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When Switch A works normally, packets from Host A to Host B are forwarded through
Switch A. When VRRP finds that there is a fault on the uplink of Switch A through NQA,
packets from Host A to Host B are forwarded through Switch B.
Network diagram
Figure 46 Network diagram for VRRP-track-NQA collaboration configuration
10.1.1.3/24
Host A
Configuration procedure
Create VLANs, and assign IP addresses to VLAN interfaces, as shown in Figure 46. (Details
1.
not shown.)
Add ports to related VLANs. (Details not shown.)
2.
Configure an NQA test group on Switch A
3.
<SwitchA> system-view
Create an NQA test group with the administrator name admin and the operation tag test.
[SwitchA] nqa entry admin test
Configure the test type as ICMP-echo.
[SwitchA-nqa-admin-test] type icmp-echo
Configure the destination address as 10.1.2.2.
[SwitchA-nqa-admin-test-icmp-echo] destination ip 10.1.2.2
Set the test frequency to 100 ms.
[SwitchA-nqa-admin-test-icmp-echo] frequency 100
Configure Reaction entry 1, specifying that five consecutive probe failures trigger the track-NQA
collaboration.
[SwitchA-nqa-admin-test-icmp-echo] reaction 1 checked-element probe-fail
threshold-type consecutive 5 action-type trigger-only
[SwitchA-nqa-admin-test-icmp-echo] quit
Start NQA probes.
Virtual IP address:
10.1.1.10/24
Vlan-int2 Vlan-int3
10.1.1.1/24 10.1.2.1/24
10.1.2.2/24
Switch A
Vlan-int3
Vlan-int2
10.1.3.1/24
10.1.1.2/24
10.1.3.2/24
Switch B
186
Vlan-int3
Switch C
Internet
Vlan-int3
Switch D
20.1.1.1/24
Host B