While labbing today I've ran into some strange behavior with BGP communities/route-map processing. Basically the objective was from R9, send a community for the 172.30.79.0/27 route out to R7 to 65100:90 AND send a community for the 172.30.89.0/27 route out to R8 to 65100:110. Then on R9 match community 65100:90 and set the local-pref to 90 and 65100:110 to local-pref of 110. Should be easy enough but the behavior that i'm seeing is that all is working on R7 but not on R8. The R8 inbound route-map is watching the community but not setting the local-pref for some reason... Any ideas? See below.
Topology
##R9’s BGP/Route-map config setting communities for the two routes out to R7 & R8##
R9#sh run | s bgp|route-map
router bgp 65100
network 172.30.79.0 mask 255.255.255.224
network 172.30.89.0 mask 255.255.255.224
network 192.122.3.9 mask 255.255.255.255
neighbor 172.30.79.7 remote-as 65006
neighbor 172.30.79.7 send-community both
neighbor 172.30.79.7 route-map R7-OUT out
neighbor 172.30.89.8 remote-as 65006
neighbor 172.30.89.8 send-community both
neighbor 172.30.89.8 route-map R8-OUT out
ip bgp-community new-format
route-map R7-OUT permit 10
match ip address prefix-list 172.30.79.0/27
set community 65100:90
route-map R7-OUT permit 20
route-map R8-OUT permit 10
match ip address prefix-list 172.30.89.0/27
set community 65100:110
route-map R8-OUT permit 20
##R7’s config##
R7#sh run | s bgp|route-map
router bgp 65006
address-family ipv4 vrf VPN
neighbor 172.30.79.9 remote-as 65100
neighbor 172.30.79.9 activate
neighbor 172.30.79.9 send-community both
neighbor 172.30.79.9 as-override
neighbor 172.30.79.9 route-map R9-IN in
!
route-map R9-IN permit 10
match community 65100:90
set local-preference 90
route-map R9-IN permit 20
##R7’s ‘show bgp’##
R7#sh ip bgp vpnv4 vrf VPN | b Network
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 65066:700 (default for vrf VPN)
r> 172.30.79.0/27 172.30.79.9 90 0 65100 i
*> 172.30.89.0/27 172.30.79.9 0 0 65100 i
*> 192.122.3.9/32 172.30.79.9 0 0 65100 i
##R8’s config##
router bgp 65006
address-family ipv4 vrf VPN
neighbor 172.30.89.9 remote-as 65100
neighbor 172.30.89.9 activate
neighbor 172.30.89.9 send-community both
neighbor 172.30.89.9 as-override
neighbor 172.30.89.9 route-map R9-INv2 in
!
route-map R9-INv2 permit 10
match community 65100:110
set local-preference 110
route-map R9-INv2 permit 20
##R8’s ‘show bgp’##
R8#sh ip bgp vpnv4 vrf VPN | b Network
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 65006:800 (default for vrf VPN)
*> 172.30.79.0/27 172.30.89.9 0 0 65100 i
r> 172.30.89.0/27 172.30.89.9 0 0 65100 i
*> 192.122.3.9/32 172.30.89.9 0 0 65100 i
R8#sh ip bgp vpnv4 vrf VPN community | b Network
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 65006:800 (default for vrf VPN)
r> 172.30.89.0/27 172.30.89.9 0 0 65100 i
R8#sh ip bgp vpnv4 vrf VPN 172.30.89.0/27
BGP routing table entry for 65006:800:172.30.89.0/27, version 77
Paths: (1 available, best #1, table VPN, RIB-failure(17))
Not advertised to any peer
Refresh Epoch 2
65100
172.30.89.9 from 172.30.89.9 (192.122.3.9)
Origin IGP, metric 0, localpref 100, valid, external, best
Community: 65100:110
Extended Community: RT:910:910
mpls labels in/out 45/nolabel
rx pathid: 0, tx pathid: 0x0
