Comcast thinks it ok to install public wifi in your house

Phil Bedard bedard.phil at
Thu Dec 11 03:55:33 UTC 2014

It won't overlap with the one you are using for yourself on the same device. 

DOCSIS has service flows with different priorities.  I don't know if they are allocating specific channels for it or if it's just a different service flow, but either way it is a lower priority and should not cause contention with regular user traffic.

Really it is just the power they seem to be complaining about.  


-----Original Message-----
From: "Harald Koch" <chk at>
Sent: ‎12/‎10/‎2014 10:21 PM
To: "Mr Bugs" <bugs at>
Cc: "NANOG list" <nanog at>
Subject: Re: Comcast thinks it ok to install public wifi in your house

On 10 December 2014 at 21:50, Mr Bugs <bugs at> wrote:

> however they use a separate DOCSIS and 802.11 channel so if would follow
> that it would be a separate IP tied to comcast corporate and not the
> subscriber as well as not taking up your bandwidth.

IIRC there are only three non-overlapping channels on 802.11g and six on
802.11n; I can see more networks than that from my basement.

I haven't been keeping up with the technology, but in the ancient of days
wasn't the uplink side of DOCSIS also a limited-bandwidth, shared resource?


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