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clock source


I would really appreciate if one of you can answer or clarify this for me.

-We have routers set in a ring topology

-The circuits connecting the routers are unchanellized T1

-We set the router T1 controller on one end as clock source line and the other end as clock source internal.

-All 2600 routers have a WIC-2MFT-T1

So far so good, I do not see errors on the controller (no slips,etc)...

Now, a peer of mine at work is suggesting that my clocks aren't set properly because the "show network clock" command reports the following ;

show network-clocks

Network Clock Configuration


Priority Clock Source Clock State Clock Type

10 Backplane GOOD PLL

Current Primary Clock Source


Priority Clock Source Clock State Clock Type

10 Backplane GOOD PLL

Because it reports the clock source as being the backplane, he is suggesting to me that I am not in fact getting the clocking from line but rather from the internal clock ? Is that correct ? I thought that the show network clock command output rather identify the clock source related to using network-clock participate commands....and not the clock source from a T1 controler perspective (and in fact the show controller command report the proper clock source I have set with the clock source command). AM i wrong in thinking the show network clock command does not really report the T1 controller clock source ?



Re: clock source

The "show network-clocks", show which ports are designated as network clock sources and also displays what is configured at each priority and the current priority of the functioning clock.

The output from the "show controllers" command shows what transmit clock is configured for an interface.