CMTS/Public Wifi provisioning question

Frank Bulk frnkblk at
Fri May 30 03:27:22 UTC 2014

Interesting, I may need to open a ticket with Moto to ask how that’s done.




From: Scott Helms [mailto:khelms at] 
Sent: Thursday, May 29, 2014 7:58 AM
To: Frank Bulk
Cc: Jay Ashworth; NANOG
Subject: Re: CMTS/Public Wifi provisioning question


>From talking to folks involved with and Comcast support there is a separate service flow for the public SSID.  I have yet to configure that in the lab, but it sounds like a good project :)


Scott Helms 
Vice President of Technology 
(678) 507-5000 


On Thu, May 29, 2014 at 1:19 AM, Frank Bulk <frnkblk at <mailto:frnkblk at> > wrote:

It's my understanding that the public Wi-Fi uses the same data flow as the subcriber's data flow.  I've seen nothing in the release notes for ARRIS or Moto that suggest one can tie an SSID to a specific service flow.


-----Original Message-----
From: NANOG [mailto:nanog-bounces at <mailto:nanog-bounces at> ] On Behalf Of Jay Ashworth
Sent: Wednesday, May 28, 2014 9:01 AM
Subject: CMTS/Public Wifi provisioning question

I expect Frank Bulk to have an opinion on this, all others welcome.

Hat tip to Bright House -- I've noticed lately that I don't have to go
through their captive portal when using their public wifi hotspots (they
participate in the CableWifi consortium, using WAPs built into their
6580 and other cablemodems, and offer a carrier-specific connection SSID
as well).

This has led me to a point of curiosity:

If I'm the subscriber, and I've paid for 15 mb/s down, then my wired
connection and my private wireless (if provisioned, and they charge
$10/mo, so I'll do that myself, thanks) are using one ... DOCSIS path?
back to the CMTS.

I assume that cableco provided voice is on a separate path, and I'm sure
the TV service is -- if it's even IP at all.

But the question is: is that public wifi service *also* on a separate
bandwidth-limited channel out of the cablemodem?

Offline replies fine, unless you think it's of sufficiently general
interest; I expect it's implementation dependent.

-- jra

Jay R. Ashworth                  Baylink                       jra at <mailto:jra at> 
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates          2000 Land Rover DII
St Petersburg FL USA      BCP38: Ask For It By Name!           +1 727 647 1274 <tel:%2B1%20727%20647%201274> 


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