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Example of ineffective association between NAQ and static routes(2)

Latest reply: Dec 24, 2018 02:23:07 1928 2 0 0 0

Fault Symptom

Network Topology
Example of ineffective association between NAQ and static routes(2)-2510735-1
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result displays failed, but the static route associated with NQA still exists in the AR1's routing table without being withdrawn.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The static route still exists without being withdrawn.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.

 

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gululu
Created Sep 28, 2017 07:42:56

thanks
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xiaomumu
Created Dec 24, 2018 02:23:07

This post was last edited by xiaomumu at 2018-12-27 01:33. What might NQA test results indicate as a failure?
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