[j-nsp] MX80 BGP performance after reboot

[Paul Stewart]

I was there for that lightning talk (and very recently seen that "feature"
actually happening) but what's getting described here by the OP doesn't seem
to be the same.... maybe I'm misunderstanding.

Paul

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Jeff Wheeler
Sent: February-11-13 6:59 PM
To: Juniper NSP
Subject: Re: [j-nsp] MX80 BGP performance after reboot

On Mon, Feb 11, 2013 at 6:15 PM, Sebastian Wiesinger
<juniper-nsp at ml.karotte.org> wrote:
> I noticed that a MX80 takes quite a long time after reboot to put all 
> routes into the KRT. Is that normal for that box? It takes around 10 
> minutes after BGP is established to get all the routes into the KRT

Yes, the routes taking a long time to install is "normal,"
unfortunately.  I feel like it has got worse since 10.4 but that might be my
imagination.

I am sorry I missed Richard Steenbergen's lightning talk at NANOG, which was
something like "if you want your routers to install routes, call Juniper and
reference PR#<whatever> because they do not want to fix this bug."

I am hopeful that the move away from a single Junos release strategy to some
segregation among different products will allow Juniper to be more flexible
in how they allocate development resources to different platforms.

If I had to guess, I'd say the ddos-related log messages you are reading are
related to excessive need to generate ttl_exceeded packets because of
routing loops while BGP is announcing to neighboring routers but the routes
are not actually installed in the FIB yet.
Even if I am wrong about the specifics here, I am certain it is only a
symptom of the problem which is unrelated to the ddos-protection feature.

--
Jeff S Wheeler <jsw at inconcepts.biz>
Sr Network Operator  /  Innovative Network Concepts
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