If you mean operating in layer 2 mode then this is a software setup function and not dependant on the hardware. This is availabe in ScreenOS 5 and up.
If you mean physical bypass across two ports like the WXC series appliance then none of them.
Steve Puluka BSEET Juniper Ambassador Senior Network Engineer JNCIA-ER JNCIA-EX JNCIS-SEC JNCIP-SEC JNCIS-FWV JNCIS-SSL MCP - Managing Server 2003 MCP - Windows XP Professional MCTS Windows 7 http://puluka.com/home
