Lukas Beeler schrieb:
On Thu, Mar 5, 2009 at 19:08, Fredy Kuenzler kuenzler@init7.net 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 Of course BOGONs are outdated, but the concept is still valid.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.