[SI-LIST] Re: Intermittent issue with the board

>   We have developed an optical ethernet module, which caters three
> GigabitEthernet ports, two 10/100 fast ethernet ports and one Gigabit
> Optics.
>   We are observing that for every power-up cycles, the board is
> behaving differently.  Strange behaviour is for one particular
> power-up there will be no packet loss (rigorously tested for few
> hours), where as after few minutes for another power-up cycle the same
> board will show few packet loss. 

How many clocks are there are on the board and/or how are they generated?

Maybe sometimes the link level clocks come out of reset synchronized and 
other times they are out of sync.

I'd probably try to get a scope on the link signals.  It might be interesting 
to check the power supplies.



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