Hi all, I have a few problems with configuring route maps in conjunction with BGP.
I have configured a community that advertises all networks except two but these two networks are still advertised to the peer after doing the clear ip bgp * command on both peers. I have read in the Cisco book that route-maps are applied to incoming packets, therefore I need to configure my route-map on R2, which is connected to R1 over a serial link (R1 has all the routes to advertise in the BGP AS). I'm assuming the logic in my route-map is like this: "if 10.3.2.0/24 is received in a BGP update, then do not allow that route to be entered into the BGP route table, however allow all other routes to be enetered into the BGP route table". Howevere when I do a sh ip bgp it still includes 10.3.2.0/24. Perhaps R2 will still insert the route into its own route tabel, but not advertise it out to the next router (R3, which is not connected directly to R1) - does anybody know? Here is the topology: R1----------R2-----------R3 Here is the configuration on R2: router bgp 100 no synchronization neighbor 1.1.1.1 remote-as 100 neighbor 1.1.1.1 update-source Loopback0 neighbor 1.1.1.1 send-community neighbor 1.1.1.1 route-map com1 in ! ip classless ip route 1.1.1.1 255.255.255.255 192.168.100.1 access-list 3 permit 10.3.2.0 0.0.0.255 route-map com1 permit 10 match ip address 3 set community 100 ! route-map com1 permit 20 set community no-advertise and on R1: interface Ethernet0 ip address 10.2.2.1 255.255.255.0 secondary ip address 10.3.2.1 255.255.255.0 secondary ip address 10.4.2.1 255.255.255.0 secondary ip address 10.5.2.1 255.255.255.0 secondary ip address 10.6.2.1 255.255.255.0 secondary ip address 10.7.2.1 255.255.255.0 secondary ip address 10.8.2.1 255.255.255.0 secondary ip address 10.9.2.1 255.255.255.0 secondary ip address 10.10.2.1 255.255.255.0 secondary ip address 10.1.2.1 255.255.255.0 router bgp 100 network 10.1.2.0 mask 255.255.255.0 network 10.2.2.0 mask 255.255.255.0 network 10.3.2.0 mask 255.255.255.0 network 10.4.2.0 mask 255.255.255.0 network 10.5.2.0 mask 255.255.255.0 network 10.6.2.0 mask 255.255.255.0 network 10.7.2.0 mask 255.255.255.0 network 10.8.2.0 mask 255.255.255.0 network 10.9.2.0 mask 255.255.255.0 network 10.10.2.0 mask 255.255.255.0 neighbor 2.2.2.2 remote-as 100 neighbor 2.2.2.2 update-source Loopback0 TIA, Matthew. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74424&t=74424 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
