3Com S7906E - Switch, Configuration Manual

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*> 6.6.6.0/24 1.1.3.1 0 300 100i
*> 7.7.7.0/24 1.1.3.1 0 300 200i
*> 8.8.8.0/24 1.1.3.1 0 300 200i
*> 9.9.9.0/24 1.1.3.1 0 300 200i
The display above shows that Switch D has learned routes 4.4.4.0/24, 5.5.5.0/24, and 6.6.6.0/24 from
AS 100 and 7.7.7.0/24, 8.8.8.0/24, and 9.9.9.0/24 from AS 200.
3) Configure Switch D to reject routes from AS 200.
# Configure AS_PATH list 1 on Switch D.
[SwitchD] ip as-path 1 permit .*200.*
# Configure a route policy named rt1 on Switch D.
[SwitchD] route-policy rt1 deny node 1
[SwitchD] if-match as-path 1
[SwitchD] route-policy rt2 permit node 2
# On Switch D, specify route policy rt1 to filter routes received from peer 1.1.3.1.
[SwitchD] bgp 400
[SwitchD] peer 1.1.3.1 route-policy rt1 import
# Display the BGP routing table information of Switch D.
[SwitchD] 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 display above 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 Route Policy Configuration
IPv4 Routing Information Filtering Failure
Symptom
Filtering routing information failed, while the routing protocol runs normally.