Fault Symptom
Network
Topology
Association between NQA and static routes is configured on AR1:
<AR1> display current-configuration | include
static
ip route-static 0.0.0.0 0.0.0.0 12.12.12.2 preference 100
ip route-static 0.0.0.0 0.0.0.0 13.13.13.2 track nqa test test
The destination IP becomes unreachable and the NQA test result displays failed, but the static route associated
with NQA still exists in the AR1's routing table without being withdrawn.
[AR1]display nqa results
5 . Test 33 result The test is finished
Send operation times:
3
Receive response times: 0
Completion:failed
RTD OverThresholds number: 0
Attempts
number:1
Drop operation
number:0
Disconnect operation
number:0 Operation timeout
number:3
System busy operation number:0
Connection fail
number:0
Operation sequence errors number:0 RTT Status errors
number:0
Destination ip
address:34.34.34.2
Min/Max/Average Completion Time:
0/0/0
Sum/Square-Sum Completion Time:
0/0
Last Good Probe Time: -0001-11-29 16:00.0
Lost packet ratio: 100 %
The static route still exists without being withdrawn.
<AR1>display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations :
13 Routes :
11
Destination/Mask Proto Pre
Cost Flags
NextHop Interface
0.0.0.0/0
Unr 60
0 D
13.13.13.2 GigabitEthernet0/0/1
Alarm Information
None
Troubleshooting Procedure
1. Check
the IP routing table of AR1.
<AR1>display ip routing-table
Destination/Mask Proto Pre
Cost Flags
NextHop Interface
0.0.0.0/0
Unr 60
0 D
13.13.13.2 GigabitEthernet0/0/1
The Proto field of this IP routing
table displays Unr, which is not the
configured static route.
ip route-static 0.0.0.0 0.0.0.0 13.13.13.2 track nqa test test
2. Confirm that the route type of Unr is user-defined. In most cases, this type
of route is automatically generated by the DHCP protocol. Then check
GigabitEthernet0/0/1 of AR1, finding that the interface configuration is
DHCP-alloc. Change DHCP-alloc to manual configuration. Then this problem is
resolved.
Root Cause
If the NQA result displays failed, the associated static route will be withdrawn. The static route in the IP routing table should be the same route generated by another routing protocol or configuration. After the static route associated with NQA is withdrawn, it is floated to the IP routing table.
Summary and Suggestions
If the NQA result displays failed, the associated static route will be withdrawn. The static route in the IP routing table should be the same route generated by another routing protocol or configuration. After the static route associated with NQA is withdrawn, it is floated to the IP routing table.
