Re: throughput query on cisco 3845

From: paul cosgrove (paul.cosgrove@gmail.com)
Date: Wed Jan 07 2009 - 20:45:11 ARST


Have just tested a 3835 with a copper g0/0 and a fibre NM-1GE. Using just a
traffic generator and the router I'm seeing up to:-

405 Mbps with 1518 byte frames.
323 Mbps with 200 byte frames.
282 Mbps with 82 byte frames

The cisco stats have the router rated at a little less than this, 256Mbps @
64 byte packets:
http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf

The router supports an MTU of 9000, but the equipment I have seems reluctant
to generate jumbo frames (may not be supported). This router just has a
basic config, bgp and sub interfaces. Features which change the forwarding
path are likely to reduce throughput. If I have time tomorrow I'll try the
two onboard NICs and let you know if there is any difference.

With encryption, pps tends to be much more important than bps. Even high
end encryption devices can show surprisingly poor performance when pushing
small packets.

Paul.

On Wed, Jan 7, 2009 at 7:24 PM, Luan Nguyen <luan@netcraftsmen.net> wrote:

> Depends on your packet sizes.
> With ideal condition, I've seen 500Mbps.
>
> Luan Nguyen
> Chesapeake NetCraftsmen, LLC.
> [W] http://www.netcraftsmen.net
> [M] luan@netcraftsmen.net
> [Blog] http://cnc-networksecurity.blogspot.com/
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> subodh.rawat@wipro.com
> Sent: Wednesday, January 07, 2009 2:01 PM
> To: ccielab@groupstudy.com
> Subject: throughput query on cisco 3845
>
> Hi Guys,
>
>
>
> Can any one please confirm that cisco 3845-MB router with onboard
> Gigabit interface (RJ45 or SFP) supports how much of maximum throughput?
>
>
>
> Does it has maximum throughput of 256Mbps only?
>
>
>
> Thanks
>
> Subodh
>
>
>
>
>
>
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