From: Carlos A. Silva (carlos@xxxxxxxxxxx)
Date: Mon Jul 15 2002 - 18:55:02 GMT-3
hello, there:
this past week i saw the following behavior on a wic-1t:
diagram:
3660(wic-1t)------(v.35)MUX(v.35)-------(db60)2509
obviously the 3660 is acting as a dte and the mux is delivering the clock.
when i configure the mux to deliver a clock rate of 1920k the serial
(router-to-router) connection does not come up.
if i replaced the 3660 with another 2509 the serial int came up fine.
after a while i noticed that when using the 3660, if i changed the clock
rate the MUX was delivering to the router to one of the clockrates specified
in
the router's config menu, the interface would come up just fine. for
example: if configured the mux to deliver a 64k, 784k, 1300k, 2000k clock
rate
to the router, the serial interface would come up fine...if i used speeds
like 616k, 1920k...it would never come up.
from my testing, it looks like there's a difference on the clock rates
supported by a wic-1t and the normal db60 serial.
i had never seen this before, though. has anyone come across a document
explaining that this is supposed to work this way?
(please keep in mind...the router, the 3660, is not operating as DCE...so
there are no configuration changes on it. i just happened to try the
clock rates on the config menu)
thanks,
carlos.
Carlos A. Silva [tel]: 52.818.401.2191
Micronet de Mixico http://mnet.com.mx
"...sal del camino, toma la ruta..." - Cerati
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