[j-nsp] Peering with loopback

[Bill Blackford]

I don't have the session live anymore but my recollection after looking in the syslog is that I was trying to peer up with the loopback address and getting errors that the interface of the local interconnect couldn't establish peer.

As Harry Reynolds posted earlier, 

<snip>
When lo0 peering, as long as both ends are active, you can get by with just one end correctly configured to use lo0 as source. Not so when neither end is.
</snip>

This explains why my C to J worked but the J to J did not.

Thanks all. I will try this on my next window.

-b


-----Original Message-----
From: Mark Tinka [mailto:mtinka at globaltransit.net] 
Sent: Thursday, February 04, 2010 9:52 AM
To: juniper-nsp at puck.nether.net
Cc: Bill Blackford
Subject: Re: [j-nsp] Peering with loopback

On Friday 05 February 2010 01:07:59 am Bill Blackford wrote:

> I'm running a mixed environment of Juniper and Cisco and  have noticed 
> some odd behavior with some of iBGP peers.
>  It's my understanding that Junos has no equivalent to  the Cisco 
> 'update-source loobback0'. I haven't run into  to problems peering 
> with the respective loopback between  a Cisco to Juniper but have with 
> a Juniper to Juniper  (that is attempting to bring the peers up via 
> the  loopbacks). Although my tests were limited and lack too  many 
> details, I'm curious if anyone has run up against  this issue and what 
> your recommendations are.

What kinds of issues are you facing?

Specify the 'local-address' feature as part of your session parametres.

Cheers,

Mark.