BGP Route-map filter not working

[CiscoBrownBelt]

So in this lab, BGP neighbor 5.5.5.5 stilll show 2.1.1.1 BGP route that i am trying to filter on R2 below. Not sure what I am missing.

I tried just using /32 or /24 for loopbacks but that did not help so...

Also cleared neighbors after changes.

interface Loopback0
ip address 2.2.2.2 255.255.255.255
ip rip advertise 5
!
interface Loopback1
ip address 2.1.1.1 255.255.255.0 
ip rip advertise 5
!
interface Loopback3
ip address 2.3.3.3 255.255.255.0

router bgp 100
bgp router-id 2.2.2.2
bgp log-neighbor-changes
redistribute ospf 1 metric 255
neighbor 5.5.5.5 remote-as 500
neighbor 5.5.5.5 ebgp-multihop 2
neighbor 5.5.5.5 update-source Loopback0
neighbor 172.16.1.3 remote-as 100
distribute-list BGP100_RM in

ip prefix-list R2_Filter seq 5 permit 2.1.1.0/24

route-map BGP100_RM deny 10
match ip address prefix-list R2_Filter
!
route-map BGP100_RM permit 20

[Georg Pauwen]

Hello,

try an access list or a prefix list as below:

access-list 1 deny 2.1.1.0 0.0.0.255
access-list 1 permit any
!
neighbor 172.16.1.3 distribute-list 1 in

or

ip prefix-list R2_Filter seq 5 deny 2.1.1.0/24
ip prefix-list R2_Filter seq 10 permit 0.0.0.0/0 le 32
!
neighbor 172.16.1.3 prefix-list R2_Filter in

[Giuseppe Larosa]

Hello @CiscoBrownBelt ,

I may be wrong but I think the distribute-list command to be able to invoke a route-map needs the following syntax:

distribute-list route-map BGP100_RM in

I'm afraid that with your current configuration the distribute-list is looking for a named ACL with name BGP100_RM that does not exist.

Hope to help

Giuseppe