nanog mailing list archives

RE: CMTS/Public Wifi provisioning question


From: "Armstrong, Bill R" <Bill.Armstrong () charter com>
Date: Fri, 30 May 2014 14:06:32 -0500

That’s what I was thinking, I'm not sure about the specifics of the implementation in question but the SSID may have a 
unique tunnel address(back to a wireless controller) which *could* be used to tag the flows with a specific SCN. 


-Bill


-----Original Message-----
From: NANOG [mailto:nanog-bounces () nanog org] On Behalf Of Blake Hudson
Sent: Friday, May 30, 2014 10:03 AM
To: nanog () nanog org
Subject: Re: CMTS/Public Wifi provisioning question

DOCSIS config files allow one to use service flow classifiers that match on a variety of criteria. I imagine either the 
IP range used for public access or the SSID/VLAN/Interface of the wifi hotspot could be used in this instance. 
http://www.cmtsinfo.net/?howto=cm_config provides a good general overview of what's available and how to apply (see 
section 6 on classifiers).

Of course, even if a dedicated service flow is used, this could still compete with the bandwidth available to the modem 
or to other modems served on the same node. I could envision this making network bandwidth management more difficult as 
customers roam, especially if they densely congregate.

--Blake

Frank Bulk wrote the following on 5/29/2014 10:27 PM:
Interesting, I may need to open a ticket with Moto to ask how that’s done.

  

Frank

  

From: Scott Helms [mailto:khelms () zcorum com]
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 http://www.cablewifi.com/ 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
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------

  

On Thu, May 29, 2014 at 1:19 AM, Frank Bulk <frnkblk () iname com <mailto:frnkblk () iname com> > 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.

Frank

-----Original Message-----
From: NANOG [mailto:nanog-bounces () nanog org 
<mailto:nanog-bounces () nanog org> ] On Behalf Of Jay Ashworth
Sent: Wednesday, May 28, 2014 9:01 AM
To: NANOG
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.

Cheers,
-- jra

--
Jay R. Ashworth                  Baylink                       jra () baylink com <mailto:jra () baylink com>
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates       http://www.bcp38.info          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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