[c-nsp] Cisco 7600 vlan issue

Gert Doering gert at greenie.muc.de
Mon Dec 1 02:31:41 EST 2008


On Sun, Nov 30, 2008 at 07:28:48PM -0500, Julio Arruda wrote:
> I was under impression the L3 forwarding and the L2 forwarding was done 
> by the same engine, in the PFC card(s) ? and behind it, the EARL for the 
> lookup and the rewriting of the header info (mac rewrite, dec ttl and 
> goes on) ?
> That is how Nortel 8600 (and earlier gen, rapidcity-legacy) did the 
> work, the same lookup engine would do l2 and l3, so I may be messing up 
> things in my mind :-), in a little more distributed fashion (more like DFCs)

As I wrote:

> >[Yes, this is simplifying things a lot, but the basic architecture works
> >that way - and all the rest is "powerups" to improve throughput]

USENET is *not* the non-clickable part of WWW!
Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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