Re: BGP Filter list

From: Stanislav Sinyagin (SSinyagin@xxxxxx)
Date: Sun Nov 28 1999 - 19:03:11 GMT-3


   
What does your R3 say at
     sh ip bgp neigh <R4> advert

Make sure that R3 is really advertizing them. And, after you configure
your BGP, "clear ip bgp *" is very useful.

If it still doesn't work, send here your configs.

Stan

Manjeet Chawla <mchawla@asanet.com> wrote:
MC> Hi all:

MC> Here is the scenario:

MC> EBGP IBGP EBGP IBGP
MC> R1-----------------R2-------R3------------------R4---------R5

MC> R1 = AS100 Advertises network 10.0.0.0
MC> R2 and R3 = AS200 Advertises 30.0.0.0 and 50.0.0.0
MC> R4 and R5 = AS300 advertises 20.0.0.0 and 40.0.0.0

MC> If I apply a inbound filter-list on R4 as below,

MC> start
MC> !
MC> neighbor <R3's address> filter-list 10 in
MC> !
MC> ip as-path access-list 10 permit .*
MC> !
MC> end

MC> I loose are R2 and R3 originated routes but I still have R1 advertised
MC> route.

MC> I thought .* (dot star) was like DOS's *.*. Why am I not seeing
MC> directly attached AS's routes.

MC> I am using 11.2(12) on a 2500 on R4.

MC> Thanks for your help in advance.

MC> -Manjeet Chawla



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