My guess is that you are pinging router 5 out of router 2's ebgp interface,
and router 5 does not have a return route for that network. Have you tried
extended ping from router 2 using its ibgp interface as the source address?
Generally, you only advertise the ebgp network if you don't want to use
neighbor next-hop-self command (for ibgp peers).
CM
-----Original Message-----
From: "[EMAIL PROTECTED]" on behalf of "Ahmed Mamoor Amimi"
Sent: 06 August 2001 14:00
To: "[EMAIL PROTECTED]"
Subject: Re: BGP cant ping [7:14939]
> ----------
> From: Ahmed Mamoor Amimi[SMTP:[EMAIL PROTECTED]]
> Sent: Monday, August 06, 2001 3:00:21 PM
> To: [EMAIL PROTECTED]
> Subject: Re: BGP cant ping [7:14939]
> Auto forwarded by a Rule
>
Andrew,
Thanks for the information...... but i just want to know if the
network command is to be given on EBGP link.... OK i will try to illistrate
the problem
2501(1)---i----2501(2)-----e----2501(3)-----e----2501(4)---i----2501(5)
i = IBGP
e= EBGP
now i have configured the internal network with suitable IGP and IBGP (all
the internal rotuer are running IBGP). I tried to ping 2501(5) from 2501(2)
it dont ping even 2501(2) have route to 2501(5) in IGP table , but when i
tried to ping the 2501(5) router from 2501(1) it pings , it also have IGP
router to 2501(5). Then i give a network command in BGP of 2501(2) for the
EBGP link then i ping ..... and it pings the 2501(5) router ..... i was
wondering if we have to give the network command for the EBGP links.
-Mamoor
"Ahmed Mamoor Amimi" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi folks...
> I have made a senerio in which my network 192.168.1.0 is reach
> to me by 3 AS-PATH , and this entry (192.168.1.0) is also installed in my
> IGP rouing table but i cant ping anyone on the 192.168.1.0. here is the
SHOW
> IP BGP
>
> 2521#sh ip bgp
> BGP table version is 10, local router ID is 192.168.9.1
> 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
> * 192.168.1.0 192.168.4.1 0 400 200 100 i
> *> 192.168.5.2 0 200 100 i
> * 192.168.3.0 192.168.5.2 0 200 400 i
> *> 192.168.4.1 0 0 400 i
> *> 192.168.8.0 0.0.0.0 0 32768 i
> *> 192.168.9.0 0.0.0.0 0 32768 i
> * 192.168.10.0 192.168.4.1 0 400 200 i
> *> 192.168.5.2 0 0 200 i
> 2521#
>
> can anyone have the idea why i can ping 192.168.1.0 network.
> I have tried NO SYNC and NEXT HOP but it didn't help.
>
> -Mamoor
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=15018&t=14939
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