While I am quite partial to Cisco, sometimes I must work on foundry equipment.

The command interface is very similar to Cisco's  although some of the commands differentiate enough to make it a pain..

Below are two links I find quite useful when trying to manage Foundry equipment.

http://garretthoneycutt.com/index.php/Foundry

http://www.codealias.info/technotes/vlans_with_foundry_switches