said by EG:ge = gigabit ethernet.
te / xe= ten gigabit ethernet.
p, po, pos = Packet Over Sonet (an OC-3 or faster connection).
XE / TE = Juniper / Cisco 10GigE Interface
be / ae = Cisco Bundle Ethernet / Juniper Aggregate Ethernet
he = hundred gigabit ethernet.
1-1, 1-2, 1-11, 6-1, 9-1, 2-2, etc. = slot and port.
ar01, cr01, ur01
User Ring (UR), Area Ring (AR), Core Ring (CR) routing.
holy cow man. Thanks for this information. I know it's pretty trivial for non-comcast network engineers, but it really helps add some light into where my packets go when they leave town. 
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