[107581] in North American Network Operators' Group
Re: Force10 Gear
daemon@ATHENA.MIT.EDU (Adrian Chadd)
Sun Sep 7 11:49:52 2008
Date: Sun, 7 Sep 2008 23:49:43 +0800
From: Adrian Chadd <adrian@creative.net.au>
To: David Newman <dnewman@networktest.com>
In-Reply-To: <48C3E3CB.4070009@networktest.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
On Sun, Sep 07, 2008, David Newman wrote:
> 1. Set IP options. A pair of Cat 6509Es using VSS can forward packets
> without options at up to 770 mpps, but when packets have options the
> maximum is more like 20 kpps. And that's a "high-speed" example; the
> options forwarding rate is more like 0 pps with some other devices.
> Silicon that forwards packets very fast is only good when header lengths
> are fixed.
So what you're saying is "send the right crafted packets and DoS the internet",
right?
(I think I know which options may make routers go all software-path on the
packets but I haven't given it a run on a Cat6500. Hm, I wonder if this here
3750 in the lab will do..)
Adrian
