3 ms·
DOCSIS "modems" are layer 3 devices as well actually. The DOCSIS standard requires filtering by IP address and port [1] built in to the modem, instead of at th
by nalllar 9y ago
DOCSIS "modems" are layer 3 devices as well actually.
The DOCSIS standard requires filtering by IP address and port [1] built in to the modem, instead of at the CMTS. This is back-asswards, as a hacked modem can ignore the filtering, but it's part of the spec.
There are multiple sources of jitter in the puma 6/5: more channels = more jitter, more flows = more jitter/complete failure at ~2000 separate active flows in a 1 second period.
[1]: http://www.cable-europe.eu/wp-content/uploads/bsk-pdf-manager/2_CM-SP-OSSIV3.0-I15-110623.PDF http://www.cable-europe.eu/wp-content/uploads/bsk-pdf-manage... - Annex F Protocol Filtering (Normative)