Richard, Thanks for the information on these. Do you mind me asking what is a ballpark for these devices? From what I have read/heard, the Huawei D-CMTS was a 16x4 unit software upgradeable to 32x4 I thought. Is the one you have software upgradeable to 32x4? Are these DOCSIS 3.1 capable.
Better yet, what does DOCSIS 3.1 or pre- DOCSIS 3.1 mean? On Thu, Feb 4, 2016 at 10:13 PM, Richard Holbo <hol...@sonss.net> wrote: > I'm in the middle of pulling some Cisco 7246VXR-UBR's (antiques) and > replacing them with the Huawei D-CMTS devices. From what I understand of > your needs, the Huawei devices will do what you are looking for. We are > running 8x4, but can upgrade the licenses to 24x4 if we need the bandwidth, > although at that point you will be more limited by the gig uplink. I'm > designing them to not serve more than 250 customers per cmts and they are > running a single vlan on the cable side back to an ISC DHCP server with > very simple config files served via tftp. This allows me to group the > CMTS's for reasonably efficient use of IP. Have not done IP6 on these yet, > but will fairly soon. > They are actually designed to run as a ONT from the Huawei OLT (GPON), but > will also accept a standard SFP and run off ethernet (that's how I'm doing > it). Compared to the other small CMTS's I looked at these are hard to > beat. they are Hardened and can be mounted anywhere. The config to do what > I'm using them for is really simple (I'm a big believer in KISS). Have had > some in service for a few months now with no issues. > > I've used some 24 port VDSL switches in the past for MDU's and may > actually pull some of those and use these where there is RG6 house wiring > as they support a LOT more management than any of the smaller DSLAMS I've > looked at. > > In this configuration I can easily support 100mbit service on DOCSIS 3, > and my unlimited modems will speedtest all the way to 280mbs. > > > FWIW > > /rh > > On Tue, Feb 2, 2016 at 10:24 AM, Colton Conor <colton.co...@gmail.com> > wrote: > >> Yes, we are in the USA. So based on everyones recommendations, I am going >> to stay far away from EURODOCSIS. I was told be a vendor that Arris and >> other USA FCC certified cable modems could easily be flashed to EURODOCIS >> mode, so I did not think the CPE side was that big of a deal (is that even >> true). I was not aware that there were so many differences besides just >> the >> channel width. >> >> So, assuming we are talking about DOCSIS only (and not EURODOCSIS), what >> do >> you recommend? I like the idea of being able to upgrade to 3.1, but not >> sure if there are any small systems capable of this? By small I mean >> something that could feed less than 100 units, and be economical to do. >> Cable has the advantage of cheap modems, so it's really the CMTS side. >> >> Please remember I am only interested in data internet services over this >> plant. Something that works for garden style layouts where I can bring >> fiber or coaxial to the side of a garden townhome that has between 4 to 16 >> units inside of it. The reason I requested a harden outdoor unit is that >> most all of the garden style properties have both the phone >> and coaxial drops on the outside of the building. There is no central >> closet or room. Plus we are in the south, so hardened for the >> heat exposure makes sense. >> >> A remote MAC-PHY (or pre remote MAC-PHY, ala mini CMTS) sounds like what I >> want. I will check into Huawei and Gainspeed. Who else makes these? >> >> >> >> >> On Tue, Feb 2, 2016 at 11:24 AM, Scott Helms <khe...@zcorum.com> wrote: >> >> > Nick, >> > >> > Absolutely, if your plant is in Europe or one of the other areas (lots >> of >> > Africa and the middle East is like that) that adopted EuroDOCSIS I'd >> agree >> > wholeheartedly. I didn't see Colton say where they're located, but all >> > North America is the US flavor so that's what I assume on NANOG. >> > >> > That being said, the best thing that seldom gets mentioned about D3.1 is >> > getting us to unified channelization. >> > Scott Helms wrote: >> > > That very small upside for an extreme downside.Trying to hire someone >> > > to work on your system with Euro channelization, not to mention buying >> > > amplifiers and passives is a huge PITA. >> > >> > ... if your plant is in the US. >> > >> > > I have customers in Europe who >> > > decided to do US DOCSIS and they universally wish they had used the >> > > local "flavor". >> > >> > as you say, eurodocsis works well in europe. >> > >> > 3.1 will be a major improvement when it materialises. >> > >> > Nick >> > >> > >
