BGP community Q

From: Annu Roopa (annu_roopa@xxxxxxxxx)
Date: Tue Jul 02 2002 - 15:23:29 GMT-3


   
Group,

I have a community related question and the scenario
is as follows.What am i doing wrong ? Scenario is:

             (AS100)
         r11---------r8---------r10(AS 200)
              iBGP eBGP

There are some Networks (196.196.10.0/175.10.10.0
etc)coming via R10 to R8.I want to add a community
string of 100:88 to all routes containing AS 200 and
send it to R11 from R8.But somehow its not adding it
rather adding 100:900 when i see it on R11. Whats
wrong with my logic ?

Here are my configs and show commands.

R8#sr
Building configuration...
Current configuration:
hostname r8
!
router bgp 100
bgp router-id 8.1.1.1
network 8.1.1.0 mask 255.255.255.0
neighbor 11.1.1.1 remote-as 100
neighbor 11.1.1.1 update-source Loopback0
neighbor 11.1.1.1 next-hop-self
neighbor 11.1.1.1 send-community
neighbor 11.1.1.1 route-map address out
neighbor 180.10.10.1 remote-as 200
neighbor 180.10.10.1 ebgp-multihop 255
neighbor 180.10.10.1 update-source Loopback0
!
ip bgp-community new-format
ip as-path access-list 11 permit _200_
ip as-path access-list 11 deny .*
!
route-map address permit 10
match as-path 11
set community 100:88
!
route-map address permit 20
set community 100:900

------------------
r8#sh ip bgp regexp _200_
BGP table version is 12, local router ID is 8.1.1.1
Status codes: s suppressed, d damped, h history, *
valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf
Weight Path
*> 10.1.1.0/24 180.10.10.1 0 200 300 i
*>175.10.10.0/24 180.10.10.1 0 200 300 i
*> 180.10.10.0/24 180.10.10.1 0 0 200 i
*> 190.10.10.0/24 180.10.10.1 0 200 300 400
i*> 192.168.1.0 180.10.10.1 0 200 300 i
*> 196.196.1.0 180.10.10.1 0 200 300 i
-------------------------------
R11#b 196.196.1.0
BGP routing table entry for 196.196.1.0/24, version 40
Paths: (1 available, best #1, table
Default-IP-Routing-Table)
  Advertised to non peer-group peers:
  1.1.1.2
  200 300
    8.1.1.1 (metric 129) from 8.1.1.1 (8.1.1.1)
      Origin IGP, localpref 100, valid, internal, best
      Community:100:900

R11#b 175.10.10.0
BGP routing table entry for 175.10.10.0/24, version 38
Paths: (1 available, best #1, table
Default-IP-Routing-Table)
  Advertised to non peer-group peers:
  1.1.1.2
  200 300
    8.1.1.1 (metric 129) from 8.1.1.1 (8.1.1.1)
      Origin IGP, localpref 100, valid, internal, best
      Community: 100:900
---------------------------

Failed to troubleshoot it.Anyone with ideas.

=====
Thanks in advance for ur time and replies.
Annu.



This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:36:17 GMT-3