ATM SPA : clock source

schimeha1977 · ‎05-19-2008

Hi !

Currently I am troubleshooting clock issues on ATM SPAs..

Some of them show clock: line and some show clock: internal Reason: S1

But there is no way to set it to "LINE" - only INTERNAL is available.

Could you please help me ? what does Reason: S1 mean ?

and how it`s possible to set it to line.

APS

not configured

COAPS = 0 PSBF = 0

State: PSBF_state = False

Rx(K1/K2): 00/00 Tx(K1/K2): 00/00

Rx Synchronization Status S1 = FF

S1S0 = 02, C2 = 13

PATH TRACE BUFFER : STABLE

BER thresholds: SF = 10e-3 SD = 10e-6

TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6

Clock source: internal

Clock source changed to : internal Reason : S1

thx

Hans

smahbub · ‎05-23-2008

In order to resolve this issue, configure the router to derive the clock from one source. If the service provider furnishes the clocking, configure all the ports to source the clock from the line. In the case of ATM point-to-point, the service provider will not furnish the clocking. In this case, configure one end to source the clock internally, and configure the other end to source the clock from line.

The url below will help you in troubleshooting clock issues in ATM SPA:

http://www.cisco.com/en/US/products/hw/modules/ps2641/products_tech_note09186a008076b147.shtml#acl1