[j-nsp] Krt queue issues

[Darren O'Connor]

Hi Saku.

Indeed, this is the worst thing this router can do. I have redundant routers sitting there doing absolutely nothing as this router's control-plane says everything is fine.

Juniper aren't really telling me anything, only that the links I've shows are 'corner cases' - no comment on the comment I got from JTAC.

I do happen to have a spare Brocade XMR that I might just use instead. 

Juniper should just come out straight.

> Date: Mon, 1 Oct 2012 15:15:39 +0300
> From: saku at ytti.fi
> To: juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] Krt queue issues
> 
> On (2012-10-01 08:38 +0100), Darren O'Connor wrote:
> 
> Hi Darren,
> 
> > So to me this means this problem is a software issue, not hardware. And it's not yet fixed. Hence spending the money on a new box would be of no use.
> 
> Certainly not hardware issue, cisco boxes running significantly lower
> performance RPs wont do this (well at this scale). Like crappy old
> sup720-3bxl.
> 
> IMHO this is absolutely worst thing router can do, not have RIB and FIB in
> sync, since then all your investments in redundant network was lost. You
> have working backup paths, but they cannot be used due to your router
> sucking traffic it cannot handle yet.
> If they can't fix the FIB programming, they should also stop accepting
> routes from routing protocols, even if BGP convergence takes 30min, it's
> much more preferable to FIB/RIB desync.
> 
> > This particular router for me will be connected to a peering point so will have around 200 neighbours, as well as a transit link with a full BGP table.
> 
> JunOS is exceedingly poorly performing platform in control-plane,
> especially with PPC control-plane. 200 neighbours on MX80 does not sound
> like a good idea right now. You probably should have gone with bigger MX
> where you'd get XEON.
> 
> MX80 has faster CPU than RSP720, but RSP720 runs circles around MX80 :/
> -- 
>   ++ytti
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