RFC 1483:Multiprotocol encap over AAL5
		• One of the many reasons in addition to lane why people run screaming from atm (actually, if you only do pvcs, atm is easy and reliable AND can do 9K and even 64k mtus).  I’m no 1483 expert. • There are many variations involving routed and bridged pdus.  Basically, bridged is used by SPs who need to connect ethernets via an atm cloud. What Marconi’s gige int does: useless for us. Juniper does minimal routed subset w/1 ip addr good only for dslams.  Others as well, complex.