Troubleshooting routing policy configuration, Ipv4 routing information filtering failure, Symptom – H3C Technologies H3C S12500 Series Switches User Manual
Page 435: Analysis, Solution, Ipv6 routing information filtering failure
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# On Switch D, specify routing policy rt1 to filter routes received from peer 1.1.3.1.
[SwitchD] bgp 400
[SwitchD-bgp] peer 1.1.3.1 route-policy rt1 import
# Display the BGP routing table information of Switch D.
[SwitchD-bgp] display bgp routing-table
Total Number of Routes: 3
BGP Local router ID is 4.4.4.4
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 4.4.4.0/24 1.1.3.1 0 300 100i
*> 5.5.5.0/24 1.1.3.1 0 300 100i
*> 6.6.6.0/24 1.1.3.1 0 300 100i
The output shows that Switch D has learned only routes 4.4.4.0/24, 5.5.5.0/24, and
6.6.6.0/24 from AS 100.
Troubleshooting routing policy configuration
IPv4 routing information filtering failure
Symptom
Filtering routing information failed, while the routing protocol runs correctly.
Analysis
At least one item of the IP prefix list must be configured as permit mode, and at least one node in the
routing policy must be configured as permit mode.
Solution
1.
Use the display ip ip-prefix command to display IP prefix list information.
2.
Use the display route-policy command to display routing policy information.
IPv6 routing information filtering failure
Symptom
Filtering routing information failed, while the routing protocol runs correctly.
Analysis
At least one item of the IPv6 prefix list must be configured as permit mode, and at least one node of the
routing policy must be configured as permit mode.
Solution
1.
Use the display ip ipv6-prefix command to display IP prefix list information.