Quote:
Originally Posted by Ignitionnet
Two issues at play here.
1) DOCSIS upstream is TDMA which is more prone to latency caused by utilisation - there are 2 contention points at play, contending to send your request for a grant and then waiting for the grant time to actually transmit the data.
2) DOCSIS allows large traffic bursts to request more bandwidth as part of a data burst so favours continuous large amounts of upstream traffic over small bursts such as a response to a TBB ping.
Downstream uses a scheduler at the CMTS. The pipe has to max out, with interest, in order to increase latency substantially.
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Cheer Carl, Yet again I'm obliged and indebted for your patient elaboration (albeit I was personally reasonably familiar with the concept) and eagerly await your concise explanation when someone (other than me) asks "What about dual token bucket rate shaping"?
---------- Post added at 09:57 ---------- Previous post was at 09:53 ----------
Quote:
Originally Posted by Ignitionnet
The scheduler isn't a traffic management scheme, it doesn't really have any intelligence to speak of......
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Sort of reminds you of some Technical Support Forums doesn't it? :p