[Codel] Per-Paket-Overhead in DOCSIS networks

Jonathan Morton chromatix99 at gmail.com
Thu Jun 23 14:59:14 EDT 2016

> On 23 Jun, 2016, at 21:51, Greg White <g.white at CableLabs.com> wrote:
> For downstream packets, the DOCSIS MAC header consists of the standard 6-byte MAC Header, plus 6 bytes for the DS EHDR and 5 bytes for the Downstream Privacy EH Element.   So, 17+14+4=35 bytes of per-packet overhead for a downstream DOCSIS MAC Frame.  For upstream packets, there will typically be only the 6-byte MAC Header, plus the 4 byte Upstream Privacy EH version 2 Element, so 10+14+4=28 bytes of per-packet overhead for an Upstream DOCSIS MAC Frame.

Thanks Greg, this is useful information for me to build into my next overhead model update.

 - Jonathan Morton

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