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Old 21-04-2010, 16:33   #99
Ignitionnet
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Join Date: Jun 2008
Location: Leeds, West Yorkshire
Age: 47
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Re: Why I regret joining virgin media

Quote:
Originally Posted by speedfreak View Post
Look at all that info we have gleaned from him Seph
Damnit

---------- Post added at 16:31 ---------- Previous post was at 16:26 ----------

Quote:
Originally Posted by Sephiroth View Post
ToD synchronisation isn't a show stopper AFAIK. The modem substitutes a default time (and its clock ticks are then good). Every 5 minutes it tries again to synchronise time, and so on. All other functions perform, including the 30 second ranging request.

Without inside knowledge, I can't say why the ToD errors occur - but it is a discardable request from the CM and it is possibly due to a large number of CMs simultaneously trying to get ToD after restart or some other event.
It's optional for D1/1.1/2.0 and some CMTS don't have one configured. As you say modems don't really need the time to function they just need to stay in sync with the CMTS, same as a clock that hasn't been set still knows how long a second is a modem that hasn't been 'set' by ToD still knows what a 6.25us tick is.

---------- Post added at 16:33 ---------- Previous post was at 16:31 ----------

Quote:
Originally Posted by Sephiroth View Post
Igni doesn't think I know what I'm saying! He's good, eh?
You have never worked with cable practically, you're reciting what Brady Volpe and others say which doesn't necessarily mean you totally understand it, and of course regarding specifics, optional and non-standard configs Virgin's mileage may and does vary, as has caught me out a few times since I left too
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