HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Confi - Page 275

[SwitchD] ip as-path 1 permit .*200.* # Create routing policy rt1 with node 1, and specify the match mode as deny to deny routes from AS 200. [SwitchD] route-policy rt1 deny node 1 [SwitchD-route-policy] if-match as-path 1 [SwitchD-route-policy] quit # Create routing policy rt1 with node 10, and specify the match mode as permit to permit routes from other ASs. [SwitchD] route-policy rt1 permit node 10 [SwitchD-route-policy] quit # 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 The routing protocol is running properly, but filtering routing information failed. 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. 265