RE: Sniffers/Analysers

Ethereal - free, and decent.

Shomiti Surveyor - expensive, requires special hardware for line rate (and
excess) traffic generation, and difficult as could be to use. But very

Basically, it depends on what you want to do with it. If you want to
analyze what's going on on the LAN, I see nothing wrong with
Ethereal/tcpdump/<insert free package here>. But for actual testing, you
need Surveyor or something similar.

Just my $0.02