When use the IP over dwdm,which interface will i use

[luyang]

When use the IP over dwdm,which interface will i use in the network end with routers,the POS,GE,or ....

why?

[b.speltz]

describe your topology/design. i would guess you're gig e.

[d.gautschi]

If you're using Cisco GSR, then you'd connect the PoS to the DWDM transponder.

[lcsaszar]

You can use OC-3, OC-12 or OC-48 channelized, packet-over-sonet or ATM, multimode or intermediate-reach interfaces.