[c-nsp] FE ignored errors

[Rodney Dunn]

>From what I know and my experience with this
box I've never seen it brought up as an issue
of ignores incrementing when a routing change
happens.

I have surely seen it happen with spikes/burst
of traffic.

Without some lab simulations I would say
our results are not conclusive at this point.

Rodney

On Tue, Dec 21, 2004 at 11:51:44PM -0500, Jon Lewis wrote:
> On Mon, 20 Dec 2004, Rodney Dunn wrote:
> 
> > I've never actually done that test in the lab.  I can tell you
> > I've never worked on a problem where it did turn out to be a large
> > BGP udpate causing the ignores.  But there is a first time for anything.
> 
> So far, it looks like things are a little better with the nachi PBR
> removed.  I'll do the same thing with our slammer/DOS ACLs next.
> 
> > It would make sense that the VIP would spend it's time updating it's
> > forwarding table rather than swtiching packets on what could be bad
> > forwarding information.
> 
> All paths might be bad.  It's got to just forward packets using the FIB
> it has.
> 
> > I could see it for a major update when a peer flaps but I wouldn't
> > think you would see that for normal BGP route churn on the backbone.
> 
> We actually had some flapping today due to a bad OC3 card on one of our
> providers' end...but there were no errors during the flaps.  That's very
> strange, because the other night, I was able to cause thousands on demand
> just by flapping a peer (coincidentally, the one that was flapping today).
> 
> ----------------------------------------------------------------------
>  Jon Lewis                   |  I route
>  Senior Network Engineer     |  therefore you are
>  Atlantic Net                |
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