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connect 3640 and 2621xm back to back via serial?
I am having difficulty connecting these two routers back to back, via a T1 cable. The hardware is a WIC-1DSU-T1= in each device. The problem is, I cannot get the line protocol to come up.
The encapsulation is ppp on both ends
Both ends are using esf framing
Both ends are using a line code of b8zs
Both ends have a clock source of line
the 3640 has the "no-dce-terminal" command
the 2621xm has a clock rate of 4000000
Neither side has alarms that I can see
The cable I made is correct, it works when connecting 2621xm to 2621xm and 3640 to 3640. It does not work when going from 2621xm to 3640.
The encapsulation is ppp on both ends
Both ends are using esf framing
Both ends are using a line code of b8zs
Both ends have a clock source of line
the 3640 has the "no-dce-terminal" command
the 2621xm has a clock rate of 4000000
Neither side has alarms that I can see
The cable I made is correct, it works when connecting 2621xm to 2621xm and 3640 to 3640. It does not work when going from 2621xm to 3640.
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thanks