On Mon, 12 Nov 2012, Bryan Fields wrote:
And they only have to process maybe 2mbit/s of control traffic during
busy hour. The rest is handled by dedicated hardware/ASIC's. Each one
has a fully redundant hardware circuit pack and a bunch of monitoring to
switch over in case one fails.
I'd imagine it's also because some are written in a language especially
designed for the task.
http://en.wikipedia.org/wiki/Erlang_(programming_language)
"... It supports hot swapping, so that code can be changed without
stopping a system.[2]"
I've been told some people are doing routing control plane implementations
in erlang just because of these features, but I'd imagine there is a
hurdle getting enough programmers who are experienced in the language.
--
Mikael Abrahamsson email: swm...@swm.pp.se
