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List:       bird-users
Subject:    Aw: Re: bgp router with multi asn's - neighbor config ?
From:       Kai <kai_pf () gmx ! de>
Date:       2014-10-01 11:11:01
Message-ID: trinity-51ee70f1-a61b-4b38-b299-c967caf1eaa2-1412161861272 () 3capp-gmx-bs48
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> Gesendet: Mittwoch, 01. Oktober 2014 um 12:47 Uhr
> Von: "Ondrej Zajicek" <santiago@crfreenet.org>
> 
> On Mon, Sep 29, 2014 at 02:19:03PM +0000, Leo Vandewoestijne wrote:
> > On Fri, 26 Sep 2014, Kai wrote:
> > 
> > > protocol bgp me_1 {6
> > > local 10.0.0.1 as 1;
> > > router id 10.0.0.1;
> > > neighbor 10.0.0.9 as 9;
> > > direct;
> > > }
> > > 
> > > protocol bgp me_2 {6
> > > local 10.0.0.2 as 2;
> > > router id 10.0.0.2;
> > > neighbor 10.0.0.9 as 9;
> > > direct;
> > > }
> > > 
> > > (In fact there are a lot of peers like this one.)
> > > This setup doesn't seem to work. It seems as if, with each restart, only
> > > on of the two connections comes online, not always the same one. The
> > > second connection is rejected when incoming.
> > > 
> > I'm familiar with that collision, so not surprised.
> > 
> > > Which is the mistake I made here? Or does the peer have to have two IP
> > > addresses as well?
> > > 
> > Yes, that's very likely the case.
> 
> That is true. You have to use two addresses on the other side.

Dear Leo, dear Ondrej,

Thanks a lot for making this point more clear again, so that even I was able to grasp \
it finally. ;)

> But it would be a good idea to implement it in the future versions.

As I cannot reasonably ask a lot og peers to implement an unusal IP setup just for my \
special case, I'm going to switch to a completely different approach.

But I'd like to strongly support the notion of implemeting a change in future \
versions.

Best regards, Kai


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