I have the following config with one eBGP peer and no iBGP peer.
Single2#sh ip bgp summ
BGP router identifier 192.168.20.2, local AS number 20
BGP table version is 241, main routing table version 241
29 network entries using 2929 bytes of memory
31 path entries using 1488 bytes of memory
12 BGP path attribute entries using 720 bytes of memory
6 BGP AS-PATH entries using 144 bytes of memory
3 BGP community entries using 72 bytes of memory
21 BGP route-map cache entries using 420 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 5773 total bytes of memory
1 received paths for inbound soft reconfiguration
BGP activity 135/106 prefixes, 201/170 paths, scan interval 60 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
192.168.1.14 4 19855 754166 754058 241 0 0 02:39:35 27
192.168.20.1 4 20 0 0 0 0 0 never Active
Single2#
router bgp 20
neighbor MPLS-CORE route-map OVERLAP in
!
no route-map OVERLAP
Route-map OVERLAP permit 10
match community 52 exact-match
set local-pref 500
Route-map OVERLAP permit 20
match community 53 exact-match
set local-pref 400
Route-map OVERLAP permit 30
match community 54 exact-match
set local-pref 300
Route-map OVERLAP permit 40
match ip address prefix-list DEFAULT
match community 51 exact-match
set local-pref 200
Route-map OVERLAP permit 50
match ip address prefix-list DEFAULT
match community 50 exact-match
set local-pref 100
Route-map OVERLAP permit 60
!
ip prefix-list DEFAULT permit 0.0.0.0/0
!
ip community-list 50 permit 65212:9350
ip community-list 51 permit 10:1
ip community-list 52 permit 65020:9352
ip community-list 53 permit 65070:9353
ip community-list 54 permit 64920:9354
!
end
When I match a route in the permit 40 line, the prefix gets a local-pref of 200.
When I do a "show ip bgp 0.0.0.0", I see the entry from the rib-in and the loc-rib.
This shows a two available paths FROM THE SAME NEIGHBOR??
Is this normal?
Single2#sh ip bgp 0.0.0.0
BGP routing table entry for 0.0.0.0/0, version 123
Paths: (2 available, best #1, table Default-IP-Routing-Table)
Flag: 0x820
Not advertised to any peer
19855 10
192.168.1.14 from 192.168.1.14 (192.168.0.1)
Origin IGP, metric 1000, localpref 200, valid, external, best
Community: 10:1
19855 10, (received-only)
192.168.1.14 from 192.168.1.14 (192.168.0.1)
Origin IGP, metric 1000, localpref 100, valid, external
Community: 10:1
Single2#
Without applying an inbound route-map to set an attribute, or if I change the community-list to not match ie
ip community-list 51 permit 11:1
I get just the one entry (loc-rib and rib-in are the same)
Single2#sh ip bgp 0.0.0.0
BGP routing table entry for 0.0.0.0/0, version 27
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Not advertised to any peer
19855 10, (received & used)
192.168.1.14 from 192.168.1.14 (192.168.0.1)
Origin IGP, metric 1000, localpref 100, valid, external, best
Community: 10:1
Single2#
Has anyone seen this behavious before?
Kindest regards,
ken
