[j-nsp] BGP multihop problem - ERX310

[Peter Krupl]

Hi,

Could it be that the second session of the second connection messes with the loopback reachability that was privides by the first session  ?

Make sure that you have reachabillty between the two actual peering endpoints. Eg.
form loopback to loopback or whichever applies in your case. Explicitly setting the source of your ping would help.

Kind regards,
Peter Krupl

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-
> bounces at puck.nether.net] On Behalf Of Paul Stewart
> Sent: 03. May, 2011 01:19
> To: 'juniper-nsp List'
> Subject: [j-nsp] BGP multihop problem - ERX310
> 
> Hi there.
> 
> 
> 
> Turning up an ERX-310 for a customer - it's multihomed to 2 different ISP's.
> 
> 
> 
> First ISP connection works great and has been stable for about a month now
> (since it was turned up).
> 
> 
> 
> The second connection has two sessions - the first session is a /30 and is
> stable. only one prefix received here which sets things up for the EBGP
> multihop session on the second session.
> 
> 
> 
> The second *session* of the second provider is where the issue is occurring
> -after exactly 90 seconds the session drops.  This tells me the timers are
> expiring but puzzled why.  I know it's a Cisco at the other end but
> according to the folks who  manage the Cisco router it is set to 30/90 for
> timers.
> 
> 
> 
> A ping test to the remote loopback doesn't show any slowdowns or loss of
> packets.
> 
> 
> 
> As JunOSe and the ERX platform are "newer" for me I'm hoping it's something
> obvious.. Unfortunately I'm not getting the answer so far though ;)
> 
> 
> 
> Thanks,
> 
> 
> 
> Paul
> 
> 
> 
> 
> 
> 
> 
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