CMTS/Public Wifi provisioning question

Frank Bulk frnkblk at
Thu May 29 05:19:13 UTC 2014

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] 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
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

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