Richard A Steenbergen wrote: > > On Wed, May 29, 2002 at 04:24:03PM +0200, Andre Oppermann wrote: > > If there is no kind of software involved on the forwarding plane > > then I don't know how the control plane can communicate via ethernet > > with the line cards... The internal communication in the router is > > via ethernet. > > The FreeBSD based part runs on an i386 piece called the Routing Rngine, > which connects to the "rest of the system" (SFM SSB SCB or FEC boards > depending on the model) via FastE (fxp to be precise). The Routing Engine > runs the routing protocols and CLI, with all those nice FreeBSD benefits > like stability, protected process memory, extensive debugging tools, etc > (things that other vendors software lacks :P). After all the routing > information is taken in, and all the policy rules considered, a forwarding > table is constructed and passed over the ethernet link to the rest of the > system. > > From there, the Internet Processor 2 ASIC (which DOES run microcode) uses > the forwarding information as well as the firewall rules which have been > passed to it, to look at the headers of every packet and come back with a > destination interface (or discard). The linecards and FPCs take care of > putting the packet into shared memory, and forwarding it. > > An elegant solution to the control and forwarding planes, combining the > best of all worlds, if you ask me.
I agree. > > I agree with the ASIC hardware. But the BGP implementation smells > > awfully like gated (Nexthop). Anyway, a BGP deamon isn't that hard > > to write. > > As someone who has actually written a BGP implementation from scratch, let > me be the first to tell you that you are full of shit. BGP is a very Thank you. You are so cute today... > complex beast, and Juniper has spent a good amount of time making what is > without a doubt the most powerful BGP implementation currently available. Bwah... It lacks things like transparent-nexthop and transparent-as which is quite useful in Route Servers and such. Don't get me wrong. I don't say it's bad or instable or whatever but it's not perfect either. -- Andre To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
