[c-nsp] Trouble with a NM-2CT1-CSU module

[Bruce Pinsky]

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james edwards wrote:
|>If those numbers are increasing, then this circuit is getting clocking
|>errors IMHO.
|
|
|
| cmcs-NMS>sho controllers t1 1/0 brief
| T1 1/0 is up.
|   Applique type is Channelized T1
|   Cablelength is long gain36 0db
|   No alarms detected.
|   alarm-trigger is not set
|   Framing is ESF, FDL is ansi, Line Code is B8ZS, Clock Source is Internal.
|   Data in current interval (392 seconds elapsed):
|      0 Line Code Violations, 0 Path Code Violations
|      0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
|      0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
|   Total Data (last 11 15 minute intervals):
|      1326 Line Code Violations, 0 Path Code Violations,
|      2 Slip Secs, 167 Fr Loss Secs, 4 Line Err Secs, 0 Degraded Mins,
|      1 Errored Secs, 0 Bursty Err Secs, 17 Severely Err Secs, 150 Unavail
| Secs
| cmcs-NMS>
|
| Clock slips are not increasing; I suspect the recorded clock slips are do to
| me futzing with the clocking
| a bit today. I have tried internel on one side and line on the other, vice
| versa also. I have set clocking
| the line/network on both sides as a desperation move as I know no one is
| providing external timing to this circuit.
| the Tberd does not indicate any clocking on this line when I have both sides
| disconnected from their routers.
|

The framing errors at the interface level and the Frame Loss seconds
indicate that the routers are not getting the data framed the same at both
ends either due to 1) clocking not in sync; or 2) mismatched frame types
between themselves or the circuit.  I'm skeptical of #2.

Have you looped the circuit at either end either with the router or with
the T-Berd to see if one side or the other will come up succesfully?

Since this is a T1 within a DS3, I don't recall OTOMH whether it could
really be clocked externally or not.

- --
=========
bep

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