10GE router resource
William Herrin
herrin-nanog at dirtside.com
Wed Mar 26 21:06:01 UTC 2008
On Wed, Mar 26, 2008 at 4:26 PM, Sargun Dhillon <sdhillon at decarta.com> wrote:
> from a viewpoint of hardware,
> x86 is a fairly decent platform. I can stuff 40 (4x10GigE multiplex with
> a switch) 1 GigE ports in it. Though, the way that Linux works, it
> cannot handle high packet rates.
Correction: The way DRAM works, it cannot handle high packet rates.
Also note that the PCI-X bus tops out in the 7 to 8 gbps range and
it's half-duplex.
High-rate routers try to keep the packets in an SRAM queue and instead
of looking up destinations in a DRAM-based radix tree, they use a
special memory device called a TCAM.
http://www.pagiamtzis.com/cam/camintro.html
Regards.
Bill Herrin
--
William D. Herrin ................ herrin at dirtside.com bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
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