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Date:      Tue, 2 Mar 2004 14:24:50 +0100
From:      Brad Knowles <brad.knowles@skynet.be>
To:        Gleb Smirnoff <glebius@cell.sick.ru>
Cc:        Andre Oppermann <andre@freebsd.org>
Subject:   Re: My planned work on networking stack
Message-ID:  <p06002014bc6a36fcdf29@[10.0.1.3]>
In-Reply-To: <20040302125935.GA25835@cell.sick.ru>
References:  <4043B6BA.B847F081@freebsd.org> <200403011507.52238.wes@softweyr.com> <20040302031625.GA4061@scylla.towardex.com> <20040302042957.GH3841@saboteur.dek.spc.org> <20040302082625.GE22985@cell.sick.ru> <p0600200ebc6a27773c31@[10.0.1.3]> <20040302125935.GA25835@cell.sick.ru>

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At 3:59 PM +0300 2004/03/02, Gleb Smirnoff wrote:

>   Haven't you understand? I'm the "person who has real-world experience
>  in running zebra in ISP environments with multiple upstreams and taking
>  full views".

	Do you have multiple connectivity to two separate metro area 
exchanges, with multiple upstreams at each?  Most large cities are 
lucky to have a single major metro area exchange, and the author of 
bgpd for OpenBSD works at an ISP located in Hamburg which is lucky 
enough to have two major NAPs, and he has multiple connectivity to 
both.  He was the one ragging on zebra/quagga.  Among other things, 
he said he had real problems keeping sessions up with zebra/quagga 
when neighbors were flapping.

	IIRC, he's also got some pretty big cisco equipment (75xx or 
whatever), and he is going to be switching over to OpenBSD+bgpd as 
his secondary core router in the very near future, with plans to 
complete the switch over soon thereafter.  He's putting his money 
where his mouth is.


	Certainly, I have noticed that zebra hasn't done much recently, 
and at least on the surface quagga doesn't seem to have gone that far 
beyond where zebra was a couple of years ago.

>  Browse zebra CVS to make sure that author is commiting bugfixes.
>  For example: last commit to BGP code is done 2 weeks ago.

	Right, and that bugfix took how long to apply?  When was the 
previous bugfix before that?  When was the last real "new" 
development for zebra?

>  I can't say a word about quagga, since I haven't use it, but I have positive
>  experience with zebra (see above).

	If you're a zebra fan, then I suggest you check out quagga.

>  I stop replying... Do not like flame.

	Before flaming anyone further, you might want to check out pages 
like <http://www.fosdem.org/2004/index/interviews/interviews_brauer>, 
and then take a look and see what Henning Brauer has actually been up 
to.

	You might also want to check out 
<http://www.commsdesign.com/design_corner/OEG20010323S0048>; and ask 
yourself if zebra/quagga handles resiliency the way it should.  If 
this problem isn't already addressed by bgpd, I'm sure it will be 
before Henning can go production with using this for his core routers 
at his ISP.

-- 
Brad Knowles, <brad.knowles@skynet.be>

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
     -Benjamin Franklin, Historical Review of Pennsylvania.

GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E-(---) W+++(--) N+
!w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++)
tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++)



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