Information Technology Reference
In-Depth Information
Example 8-16
Detailed Path Information for 192.168.201.0
R7#show ip bgp 192.168.201.0
BGP routing table entry for 192.168.201.0/24, version 3
Paths: (3 available, best #3, table Default-IP-Routing-Table)
Not advertised to any peer
Local
192.168.100.6 (metric 30) from 192.168.100.5 (192.168.100.5)
Origin IGP, metric 0, localpref 100, valid, internal
Originator: 192.168.100.6, Cluster list: 192.168.100.5
Local
192.168.100.6 (metric 30) from 192.168.100.4 (192.168.100.4)
Origin IGP, metric 0, localpref 100, valid, internal
Originator: 192.168.100.6, Cluster list: 192.168.100.4
Local
192.168.100.6 (metric 30) from 192.168.100.6 (192.168.100.6)
Origin IGP, metric 0, localpref 100, valid, internal, best
Step 5: Remove iBGP Sessions That Are No Longer Needed
Remove unneeded BGP sessions. On migrated clients R6 and R7, remove all BGP sessions
except for those to RRs in the POP R4 and R5. On all routers in the other POP, remove BGP
sessions to the migrated clients, R6 and R7. The BGP RIB on a client now shows only
reflected paths from RRs.
Example 8-17 shows the BGP summary table on R6. Now only two BGP sessions are left:
one to R4, and the other to R5.
Example 8-17
BGP Summary Table on R6 After Cleanup
R6#show ip bgp summary
BGP router identifier 192.168.100.6, local AS number 100
BGP table version is 8, main routing table version 8
4 network entries and 7 paths using 668 bytes of memory
3 BGP path attribute entries using 180 bytes of memory
6 BGP rrinfo entries using 144 bytes of memory
1 BGP AS-PATH entries using 24 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP activity 4/74 prefixes, 11/4 paths, scan interval 60 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
192.168.100.4 4 100 1120 1119 8 0 0 17:12:34 3
192.168.100.5 4 100 1114 1111 8 0 0 00:07:35 3
