Lukas Beeler schrieb: > On Thu, Mar 5, 2009 at 19:08, Fredy Kuenzler <[email protected]> wrote: >> Remember http://www.swinog.ch/meetings/swinog7/BGP_filtering-swinog.ppt >> - in > > I just skimmed through that, and i wonder if it's still current.
Yes it is. Of course BOGONs are outdated, but the concept is still valid. > There's some talk about requiring about 128MB of memory, and budget > concerns of smaller ISPs. > > Now, even expensive FB-DIMM memory by vendors like HP and IBM only costs > around 360 CHF for 4 GB. And even small two way x86 boxes max out at > around 32 - 48 GB. Even if Cisco and Juniper charge 10x as much, that'd > still be only 3600 CHF. > > I understand that routers use ASICs and probably faster memory than > servers, but i can't really imagine it to be a problem to pop 4GB memory > into a router that's connected directly to the internet. > > Now, where am i mistaken? You assume that all gear can actually handle the memory, but a Cisco 3640 can only address 128MB, a Cisco7206VXR-NPE300 can address 256M - both considered as BGP routers for smaller networks until just recently, and they still run in many smaller networks. Even a state-of-the-art Foundry MLX-4 is not able to handle more than 25 fullfeeds (either up or downstream) for memory limitations. F. _______________________________________________ swinog mailing list [email protected] http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog
