An ethernet cable is in effect no more than two telephone wires so the point is moot.
According to Juniper, "PTM is based on the Ethernet in the First Mile (EFM) IEEE802.3ah standard". It contains a few extensions to 802.3ah but works just the same - i.e. PTM is
simply a form of ethernet.
In any case, encapsulation is not a routing function, in bridge mode all the modem does is bridge from one interface to another. It does not perform any functions commonly associated with a consumer or enterprise router. All it does is function as a layer 2 bridge (commonly called a switch).
Finally, ethernet frames *are* frames. There is no such thing as an ethernet packet. Ethernet is the frame within which an IP packet is commonly encapsulated..
And if encapsulating a packet made something into a router, then every ethernet card would also be a router.
Based on what you said above, I'm assuming you don't have your modem in router mode at all.
Edited by qasdfdsaq (Wed 02-May-12 19:39:51)