RE: [nsp] Is a FEIP2 capable of wire speed under any circumstances?

From: cheops POP (giza@cheops.mv.com)
Date: Tue Sep 15 1998 - 10:18:35 EDT


How could you push two 100FE-PA at full-duplex on a VIP 2 card.
The VIP only has a capability of pushing 320Mbps total through
its interconnect? At least that was the VIP 2-40 spec.

-pete

> -----Original Message-----
> From: owner-cisco-nsp@lists.qual.net
> [mailto:owner-cisco-nsp@lists.qual.net]On Behalf Of Jared Mauch
> Sent: Sunday, September 13, 1998 8:33 PM
> To: cisco-nsp@qual.net
> Subject: Re: [nsp] Is a FEIP2 capable of wire speed under any
> circumstances?
>
>
> I would upgrade to 11.1.21CC which came out.
>
> That will get you the latest bugfixes.
>
> I suspect you may need a FE-PA in a vip2 to get the performance
> you need. I've pushed 100M across those interfaces.
>
> - jared
>
> On Sun, Sep 13, 1998 at 05:14:37PM -0700, Mike Leber wrote:
> >
> > No, we are not running CAR.
> >
> > We are running 11.1.17CC. We have also tried running 11.1.17CA.
> >
> > With 11.1.17CC we have tried separately "ip route-cache
> optimum", "ip cef
> > switch", and "ip cef distributed switch".
> >
> > We are not doing any rate limiting. We also are not using any access
> > lists.
> >
> > On Sun, 13 Sep 1998, Edward Henigin wrote:
> >
> > >
> > > You wouldn't happen to be running CAR or dCAR, would you?
> > >
> > > I've correlated the ignore counter to packets dropped due
> > > to exceeding a CAR rule....
> > >
> > >
> > > On Sun, Sep 13, 1998 at 01:32:58PM -0700, Mike Leber said:
> > >
> > > [...]
> > >
> > > > When we increase traffic to 65 Mbps in and 15 Mbps out
> (from about 55 Mbps
> > > > in and 10 Mbps out) on this specific interface we start
> seeing ignores
> > > > race along at the rate of several hundred per second (this
> translates to
> > > > packet loss). While this is happening we are not seeing
> buffer failures
> > > > or drops on the input or output queues of the other
> interfaces. That
> > > > makes no sense. Supposedly you should only see ignores
> when allocation of
> > > > buffer or queue space repeatedly fails. We do see
> throttled increasing
> > > > (sh cont cbus) (Normally it doesn't, of course).
> > >
> > > [...]
> > >
> >
> > +------------------- H U R R I C A N E - E L E C T R I C
> -------------------+
> > | Mike Leber Direct Internet Connections Voice
> 408 282 1540 |
> > | Hurricane Electric Web Hosting & Co-location Fax
> 408 971 3340 |
> > | mleber@he.net
http://www.he.net |
>
+---------------------------------------------------------------------------
+

--
Jared Mauch  | pgp key available via finger from jared@puck.nether.net
             | http://puck.nether.net/~jared/



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