From: Alexei Monastyrnyi (alexeim@orcsoftware.com)
Date: Wed Jan 03 2007 - 12:59:49 ART
oops, messed up.. meant to say they are not best, typed "valid"
instead.... sorry
on 1/3/2007 4:57 PM Alexei Monastyrnyi wrote:
> yes, alot
> prefixes are not valid, please check if R4 knows path back to
> originating router, otherwise next-hop-self on R2 would be a workaround
>
> BGP won't advertise routes it doesn't know how to reach
>
> HTH
> A.
>
> on 1/3/2007 4:34 PM Dishan Gamage wrote:
>> Hi Alexei
>>
>> Does this give up any clue ??
>>
>>
>> R4#sh ip bgp
>> BGP table version is 2, local router ID is 110.90.4.4
>> Status codes: s suppressed, d damped, h history, * valid, > best, i -
>> internal,
>> r RIB-failure, S Stale
>> Origin codes: i - IGP, e - EGP, ? - incomplete
>>
>> Network Next Hop Metric LocPrf Weight Path
>> *> 9.9.9.0/24 0.0.0.0 0 32768 i
>> * i172.16.1.0/24 110.99.12.1 0 100 0 111 i
>> * i172.16.2.0/24 110.99.12.1 0 100 0 111 i
>> * i172.16.3.0/24 110.99.12.1 0 100 0 111 i
>> * i172.16.4.0/24 110.99.12.1 0 100 0 111 i
>> R4#sh ip bgp 172.16.1.0 ?
>> A.B.C.D Network mask
>> | Output modifiers
>> <cr>
>>
>> R4#sh ip bgp 172.16.1.0
>> BGP routing table entry for 172.16.1.0/24, version 0
>> Paths: (1 available, no best path)
>> Not advertised to any peer
>> 111, (Received from a RR-client)
>> 110.99.12.1 (inaccessible) from 110.90.2.2 (110.90.2.2)
>> Origin IGP, metric 0, localpref 100, valid, internal
>> R4#
>>
>> On 1/3/07, Alexei Monastyrnyi <alexeim@orcsoftware.com> wrote:
>>>
>>> Hi.
>>> Could you check if R4 recognizes prefixes from R2 as valid.
>>>
>>> Yep, some show output would be handy to have.
>>>
>>> A.
>>>
>>> on 1/3/2007 3:02 PM Dishan Gamage wrote:
>>> > Hi Group
>>> >
>>> > I hav followin config
>>> >
>>> > 1. R1(AS111) --------> R2(AS112)----> (ebgp)
>>> >
>>> > 2. R1 injects four loopback addresses..(172.16.1.0 - 172.16.4.0)
>>> to BGP
>>> >
>>> > 3. R2 receives the four loopback address (sh ip bgp is ok!) (R2 is a
>>> > RR-client in AS112)
>>> >
>>> > 4. R4 which is the only RR in AS112 is also receiving the four
>>> loopback
>>> id's
>>> > (i.e R2, R5, R6 are clients in AS112)
>>> >
>>> > **** ---> my problem is that R5, and R6 are not receiving the
>>> loopback
>>> > address of R1. ?? (in the bgp table)
>>> >
>>> > but when i create a loopback on R4, it propages to R5, R6 no issue
>>> ......
>>> >
>>> > all my bgp states are establish ...
>>> >
>>> > pls help
>>> >
>>> > cheers
>>> > Dishan
>>> >
>>> >
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