Colton, You're only going to find very small, old, or not certified (usually still very small) CMTSs that only do layer 2. All of the major vendors are doing layer 3 because we've found out over time that not doing it is more problematic. Having said that, if you're looking for a more ONT/DSLAM type of install there is a new type of CMTSs that look at lot like traditional telco DLC/BLC deployments.
https://intx15.ncta.com/wp-content/uploads/2015/05/17-Remote-PHY.pdf The remote PHY+MAC boxes are basically mini-CMTSs and they typically rely on something upstream handling layer 3. The remote PHY boxes are different as they don't even do a complete layer 2 and instead forward DOCSIS frames back to a centralized CMTS/CCAP. Scott Helms Chief Technology Officer ZCorum (678) 507-5000 -------------------------------- http://twitter.com/kscotthelms -------------------------------- On Tue, Feb 2, 2016 at 10:43 AM, Colton Conor <colton.co...@gmail.com> wrote: > Graham, > > What is DSG? Yes, I am really looking for a CMTS to perform layer 2 just as > our DSLAMs and GPON do today. All layer 3 will be upstream. I would want to > handle DHCP upstream, but have the CMTS insert Option 82 if that is a > feature. Not sure what specific CMTS stuff you need. > > On Tue, Feb 2, 2016 at 8:12 AM, Graham Johnston <johnst...@westmancom.com> > wrote: > > > Colton, > > > > It really depends on what features you are after. I've demo'd one of the > > small 1/2RU C-DOCSIS CMTSs, and they certainly work. For us though it > was > > a non-starter as we needed support for DSG and it didn't have it. If all > > you are after is basic internet connectivity there is Pico Digital, > Vecima, > > Sumavision, as well as others. Many of the C-DOCSIS CMTSs seem either > only > > support, or are more often meant to support layer 2 operations where the > > routing happens upstream from the CMTS. > > > > Graham Johnston > > Network Planner > > Westman Communications Group > > 204.717.2829 > > johnst...@westmancom.com > > think green; don't print this email. > > > > > > -----Original Message----- > > From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Colton Conor > > Sent: Tuesday, February 02, 2016 8:00 AM > > To: Daniel Corbe > > Cc: NANOG > > Subject: Re: Cable Operator List > > > > Well, maybe NANOG's not a bad place for this post then! I would like to > > know more about the data-only side of CMTS systems, and who the main > > vendors are. > > > > We have MDU properties where there is either old inside CAT3 phone wire, > or > > coaxial cable. We have looked and are very familiar with the multiple > > technologies that work over phone lines namely VDSL2 and G.FAST. However, > > using the coaxial cable seems to be a much better solution than using the > > phone wires. > > > > So I am looking for compacts, low cost CMTS systems. Based on the specs, > I > > am looking for something at least DOCSIS 3.0 capable, with at least 16X4 > > output. Something with the ability to upgrade to software upgrade to > DOCSIS > > 3.1 would be nice, but I doubt that would be a low cost solution. > > > > Whats out there for small operators that don't want a large chassis based > > system to feed an entire town with. > > > > So far I have found the > > http://picodigital.com/product-details.php?ID=miniCMTS200a which seems > to > > retail for under $5000. > > > > > > On Tue, Feb 2, 2016 at 7:48 AM, Daniel Corbe <dco...@hammerfiber.com> > > wrote: > > > > > > > > > On Feb 2, 2016, at 8:42 AM, Colton Conor <colton.co...@gmail.com> > > wrote: > > > > > > > > Are there any mailing lists out there dedicated for cable/MSO type > > > > operators? > > > > > > > > > > I'm curious about this too. > > > > > > I’m not a cable operator (in that I haven’t successfully registered > for a > > > cable franchise yet) but I do operate a docsis network and I’ve > > > successfully negotiated the treacherous waters of obtaining and > providing > > > content to my users. > > > > > > I’m still a bit green behind the ears but I could probably offer some > > > measure of assistance if you have a specific question. > > > > > > -Daniel > > > > > > > > >
