From: Chuck Church (cchurch@optonline.net)
Date: Fri Dec 13 2002 - 12:01:29 GMT-3
Daniel,
The listed performance stats are here:
http://www.cisco.com/en/US/products/hw/switches/ps646/products_data_sheet091
86a00800913d7.html
Look under table 2: product specifications, about 2/3 of the way down.
As far as the real world, I think it's pretty accurate, although it's
impossible to test a switch beyond what the sum of what all it's port can
support. Network Computing tested a 3550 recently, and it was able to
switch/route traffic with every port at full duplex running at 100%. Didn't
drop a single packet. Of course, that relies on the switch being able to do
everything in ASICs. Most ACL support is in hardware, but if it's like an
MSFC2, there are some things that are not. NAT, tunneling, BVIs,
encryption, and maintaining the FIB are probably done by the processor. But
if it's used in the core and only handling core type duties, it should do
them well.
Chuck Church
CCIE #8776, MCNE, MCSE
----- Original Message -----
From: "Copleston Daniel" <Daniel.Copleston@ukomfs.com>
To: <ccielab@groupstudy.com>
Sent: Friday, December 13, 2002 2:07 AM
Subject: RE: OT: easy question about performance
> On a similar theme does anybody have any hands on experience with the
level
> of packet forwarding performance you can expect when routing with a 3550
EMI
> in real life networks?
>
> Thanks,
> Daniel
>
> -----Original Message-----
> From: Howard C. Berkowitz [mailto:hcb@gettcomm.com]
> Sent: 13 December 2002 00:51
> To: ccielab@groupstudy.com
> Subject: Re: OT: easy question about performance
>
>
> At 7:38 PM +0100 12/12/02, Luis Miguel Gil wrote:
> >when cisco or another vendor say: "Performance: 15 kpps", how big is he
> >packet ? It is a TCP packect ? It is an UDP packet ? Is a layer 4, layer
3,
> >layer 2 packet ????
>
> Vendors often cite whatever performance parameters make them look
> best. For basic forwarding performance, see RFC 2544, for a
> description, at least, of what makes a good benchmark.
> .
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