[nsp] GEIP+ performance?

[Dmitri Kalintsev]

Please also be advised that it is a good idea to distribute your inbound and
outbound VIPs between your cybus'es so that traffic does not traverse the
same cybus twice (on the way in and on the way out, thus doubling the cybus
utilization).

On Fri, Jul 25, 2003 at 08:58:05AM -0700, Roldan, Brad wrote:
> Steve,
> 
>    We've found that performance of the GEIP+ cards are hinged directly
> to the types of VIP cards installed in the chassis. Somewhat
> counter-intuitively, we've found that we can achieve much higher
> performance if traffic to/from a GEIP+ card is distributed across
> multiple VIP4-50 cards, instead of GEIP+ to GEIP+.
> 
>    The features we use, which may contribute to the performance numbers
> are .1q encapsulation and Fast Etherchannel on the VIP4-50s.
> 
>    With the above setup, you should be able to achieve close to 300 Mbps
> of bi-directional traffic (600 Mbps aggregate), with 0% packet loss
> using mixed packet sizes (IMIX). If you can tolerate a little packet
> loss, you can go up to 330 Mbps of bi-directional traffic. Anything
> above that point, and you'll see your 'ignore counters' increment like
> crazy.
> 
>    I don't have our original test results handy, but I seem to recall
> that the best performance we could get at 0% packet loss with IMIX was
> in the neighborhood of 250Mbps bi-directional for GEIP+ to GEIP+
> traffic.
> 
>    For what it's worth, we use the 128MB upgrade option on the GEIP+
> cards. You can also get better results if you assume a 2:1 traffic ratio
> (2 bytes into GEIP+ for every 1 byte out), instead of a 1:1 ratio.
> 
> Regards,
> 
> Brad
> --
> Covad Communications
> 3420 Central Expressway
> Santa Clara, CA 95051
> +1-408-616-6830
> broldan at covad.com
> 
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Steve Gibbard
> Sent: Wednesday, July 23, 2003 6:31 PM
> To: cisco-nsp at puck.nether.net
> Subject: [nsp] GEIP+ performance?
> 
> 
> I'm looking for real-world performance information on the GEIP+.
> 
> Cisco claims throughput for the non-+ version of the GEIP is 400 Mb/s,
> but
> we're seeing issues at around 150 Mb/s.  This appears consistent with
> the
> performance tests in the Cisco white paper at
> http://www.cisco.com/warp/public/cc/pd/ifaa/ifpz/ggethifpz/prodlit/geip_
> ds.pdf.
> 
> For the GEIP+, I see that Cisco is claiming 800 Mb/s throughput, but I
> haven't been able to find any documentation on packets per second rates,
> and I'm wondering if we'll still end up limited to around 300 Mb/s if it
> really only doubles the performance of the GEIP.
> 
> What have people seen in terms of GEIP+ performance with the ~350 byte
> average packet size I'm seeing here?
> 
> Thanks,
> Steve
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---end quoted text---

-- 
D.K.