TimeWarner/Charter/Spectrum Cablemodem w/SNMP

[Brian Blankenship]

I'm looking for a DOCSIS3/3.1 Cablemodem that is TimeWarner compatible and has proper an SNMP implementation (patched against CVE 2017-5135 "String Bleed"). I'm hoping someone has a lead on one.

[Skiiwee29]

I work in the cable industry and I know that Time Warner/Spectrum use custom firmware from the vendors, Arris, Technicolor etc... so the modem having the fix out of the box doesn't matter. I know that Spectrum, who now owns Time Warner, doesn't charge for modem rental because they have had customers who buy bad modems and then complain and blame problems on them, when in fact its the modem. So for many many years now, they have not charged rental fees. My recommendation would be to just go with the modem they provide, or find out what they provide and use that as a template of what to buy. 

 

Models that are probably in use:

 

Arris DG/TG 1670/1672

DG/TG 2460

DG/TG 3260

 

They also have CM lineups as well, which is just a standalone modem with no built in router. A Common 3.1 Technicolor modem is the TC4400. 

 

[beersykins]

What are you using for a snmp poller?  What specific stats or communities are you hoping to pull out of that?

[Brian Blankenship]

2 hours ago, beersykins said:

What are you using for a snmp poller?  What specific stats or communities are you hoping to pull out of that?

My current Modem has only a few stats. (Connection)

And an event log or what it calls an SNMP Log. (SNMP Event Log)

 

I mainly want to automate a task to keep the history of the connection states, so I can track if the connection starts getting raggedy. I am using Observium as my poller.

[Brian Blankenship]

16 hours ago, Skiiwee29 said:

I work in the cable industry and I know that Time Warner/Spectrum use custom firmware from the vendors, Arris, Technicolor etc... so the modem having the fix out of the box doesn't matter. I know that Spectrum, who now owns Time Warner, doesn't charge for modem rental because they have had customers who buy bad modems and then complain and blame problems on them, when in fact its the modem. So for many many years now, they have not charged rental fees. My recommendation would be to just go with the modem they provide, or find out what they provide and use that as a template of what to buy. 

 

Models that are probably in use:

 

Arris DG/TG 1670/1672

DG/TG 2460

DG/TG 3260

 

They also have CM lineups as well, which is just a standalone modem with no built in router. A Common 3.1 Technicolor modem is the TC4400. 

 

I'm more concerned with having a piece of tech in my network that I don't own, I also do want a smart meter from my electric co. Yes, I am a control freak, I'm seeing someone about that. But I'm also a numbers and graphs nut. I just want to see how the signal quality is doing overtime.

 

I want to get the 400Mpbs service but I want a way to monitor the quality accurately. I've got a pair of friends that have it and are having to fight Spectrum about the crappy modem they were given. (They have to power cycle the modem 3x a day at minimum.) 

[Skiiwee29]

9 hours ago, Brian Blankenship said:

I'm more concerned with having a piece of tech in my network that I don't own, I also do want a smart meter from my electric co. Yes, I am a control freak, I'm seeing someone about that. But I'm also a numbers and graphs nut. I just want to see how the signal quality is doing overtime.

 

I want to get the 400Mpbs service but I want a way to monitor the quality accurately. I've got a pair of friends that have it and are having to fight Spectrum about the crappy modem they were given. (They have to power cycle the modem 3x a day at minimum.) 

You can still see how signal quality is doing long term beyond the upstream side by going to 192.168.100.1 on your modem and it will pull up a page that should display your downstream power, SNR, and upstream power levels. You cant see upstream SNR because thats measured at the CMTS and is an average of all modems on the service group, not just yours.