RE: Comcast thinks it ok to install public wifi in your house
Jeroen, Not that I agree with this practice, I specifically got my own modem because of this (and to have it directly attached to a real router) , 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. The bandwidth issue seems to be the only thing they can imagine people being worried about and when you complain its the only thing they talk about, making sure you know it wont take up any of your speed or quota.
On 10 December 2014 at 21:50, Mr Bugs <bugs@debmi.com> 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? -- Harald
Comcast is pushing DOCSIS 3.0 heavily, and the channel allocation and configuration in DOCSIS 3.0 is much more flexible, allowing speed configurations by bonding channels. http://en.wikipedia.org/wiki/DOCSIS But the wifi, this is of course making an already crowded and noisy space much worse. I live in a high density area with people that have wifi, and its nearly useless. My devices that can be wired are, my 4G cell is often faster and more reliable than trying to go 2.4ghz 802.11* on the same cell phone. 5ghz is pretty empty, and I'm about to move to all Asus EA-N66 wifi network on 5ghz. I understand what Comcast is trying to do, but I think it should be an opt-in type of thing instead. On Wed, Dec 10, 2014 at 10:19 PM, Harald Koch <chk@pobox.com> wrote:
On 10 December 2014 at 21:50, Mr Bugs <bugs@debmi.com> 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?
-- Harald
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. Phil -----Original Message----- From: "Harald Koch" <chk@pobox.com> Sent: 12/10/2014 10:21 PM To: "Mr Bugs" <bugs@debmi.com> Cc: "NANOG list" <nanog@nanog.org> Subject: Re: Comcast thinks it ok to install public wifi in your house On 10 December 2014 at 21:50, Mr Bugs <bugs@debmi.com> 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? -- Harald
The technical aside, you could make it opt in and let people who opted in use the public network free, and charge people not signed up or not even Comcast customers for profit. This way it makes it feel more like building a community to the consumer rather than big biz pulling one over on the little guy. On Wed, Dec 10, 2014 at 10:55 PM, Phil Bedard <bedard.phil@gmail.com> wrote:
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.
Phil ------------------------------ From: Harald Koch <chk@pobox.com> Sent: 12/10/2014 10:21 PM To: Mr Bugs <bugs@debmi.com> Cc: NANOG list <nanog@nanog.org> Subject: Re: Comcast thinks it ok to install public wifi in your house
On 10 December 2014 at 21:50, Mr Bugs <bugs@debmi.com> 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?
-- Harald
It reads to me like it's not a separate Wi-Fi radio on a different channel, but just an additional SSID being broadcast: http://wifi.comcast.com/faqs.html ctrl+f "Does the new Home Hotspot impact my Internet speeds or data usage?" On 11.12.2014 14:55, Phil Bedard wrote:
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.
Phil
-----Original Message----- From: "Harald Koch" <chk@pobox.com> Sent: 12/10/2014 10:21 PM To: "Mr Bugs" <bugs@debmi.com> Cc: "NANOG list" <nanog@nanog.org> Subject: Re: Comcast thinks it ok to install public wifi in your house
On 10 December 2014 at 21:50, Mr Bugs <bugs@debmi.com> 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?
The answer is, if someone is using your hotspot, it does use the same radio and channel your ssid is on. On Wed, Dec 10, 2014 at 11:18 PM, Andrew Jones <aj@jonesy.com.au> wrote:
It reads to me like it's not a separate Wi-Fi radio on a different channel, but just an additional SSID being broadcast: http://wifi.comcast.com/faqs.html ctrl+f "Does the new Home Hotspot impact my Internet speeds or data usage?"
On 11.12.2014 14:55, Phil Bedard wrote:
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.
Phil
-----Original Message----- From: "Harald Koch" <chk@pobox.com> Sent: 12/10/2014 10:21 PM To: "Mr Bugs" <bugs@debmi.com> Cc: "NANOG list" <nanog@nanog.org> Subject: Re: Comcast thinks it ok to install public wifi in your house
On 10 December 2014 at 21:50, Mr Bugs <bugs@debmi.com> 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?
On 12/10/14, 10:55 PM, "Phil Bedard" <bedard.phil@gmail.com> wrote:
Really it is just the power they seem to be complaining about.
And per my other post, the citation was for two separate commercial devices and the commercial WiFi AP being used 24x7. The one customers get is a very, very different residential integrated gateway (and at that I think it unlikely someone would be on the Xfinity WiFi SSID 24x7 at full Tx/Rx rate). Jason
participants (6)
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Phil Bedard