Jlm1228
New Contributor
Joined 12 years ago
User Profile
User Widgets
Contributions
Re: intermittent cable modem resets caused by signal drop
I switched over to Century Link 12 Mbs DSL two months ago. I have had no drop outs and very consistent bandwidth. I am a big user of streaming video (Netflix, Amason, Vudu...) and Ooma VoIP phone service. These work flawlessly now. If you are just using the Internet for email and web browsing... then keep Cox. However, I will not recommend cable modem Internet service to any of my friends because it is inherently unreliable.0Views0likes0CommentsRe: For Those Complaining About Random, Daily Disconnects....
I have been running CenturyLink 12 Mbps adsl here for several days without any interruptions! I called in to Cox to disconnect my $53/month Cox Internet service starting today. They asked me why I switched to dsl and I explained it to them. They told me that they pay attention to the reasons why customers cancel service so maybe someone above the customer service firewall will start to look. I told them to pay attention to this forum if they want to gain some insight, so keep posting. As for me, happy on CenturyLink now.1View0likes0CommentsRe: Intermittent Connect. Drops and Lag.
If the root cause of your flapping modem is upstream interference from something attached to the cable system, it can be difficult to isolate if the offending device particularly if the interference comes and goes.This may be in your building or it may be in another building or home in the area.The first thing a good cable company should do is look at the CMTS and see if there are other flapping modems. I cannot understand why they seem to spend so much time sending out ill equipped service techs to change out house wiring when evidence of multiple flapping modems would point to the real root cause.2Views0likes0CommentsRe: Intermittent Connect. Drops and Lag.
Here is a very informative document from Cisco: "Cable Modems Dropping Offline in a 2-way Cable Network" http://www.cisco.com/en/US/tech/tk86/tk89/technologies_tech_note09186a0080094bb1.shtml One of the linked reference documents from the above: http://www.cisco.com/en/US/docs/cable/cmts/feature/guide/ufg_flap.html From this document - Flap List Troubleshooting for the Cisco CMTS: "...The flap list tracks "flapping" cable modems, which are cable modems that have intermittent connectivity problems. A flapping cable modem can indicate either a problem with that particular cable modem, or it could indicate an RF noise problem with the upstream or downstream portion of the cable plant." Here is an interesting thread which I believe is the root cause of my modem flapping : http://www.broadbandreports.com/forum/r27172880-T3-Errors-and-Modem-Resetting-Intermittently In a cable system where everyone operates on a "party line", there are many sources of noise and interference. If Cox waits for customer complaints to monitor their system performance, these kinds of problems will continue to reoccur over and over again. I am testing my local DSL provider (CenturyLink) to see if they are more reliable. I believe that the DSL solution will be a more stable solution since I will no longer be on a "party line" where any one in my neighborhood can trash my upstream channel. Sorry to those of you with cable as your only choice!1View0likes0CommentsRe: For Those Complaining About Random, Daily Disconnects....
Here is an interesting thread which I believe is the root cause of my modem flapping : http://www.broadbandreports.com/forum/r27172880-T3-Errors-and-Modem-Resetting-Intermittently In a system where everyone operates on a "party line" (you younger folks should google this term), there are many sources of noise and interference. If Cox waits for customer complaints to monitor their system performance, these kinds of problems will continue to reoccur over and over again. I am testing my local DSL provider (CenturyLink) to see if they are more reliable. I believe that the DSL solution will be a more stable solution since I will no longer be on a "party line" where any one in my neighborhood can trash my upstream channel. Sorry to those of you with cable as your only choice!1View0likes0CommentsRe: For Those Complaining About Random, Daily Disconnects....
Here is a very informative document from Cisco: "Cable Modems Dropping Offline in a 2-way Cable Network" http://www.cisco.com/en/US/tech/tk86/tk89/technologies_tech_note09186a0080094bb1.shtml One of the linked reference documents from the above: http://www.cisco.com/en/US/docs/cable/cmts/feature/guide/ufg_flap.html From this document - Flap List Troubleshooting for the Cisco CMTS: "...The flap list tracks "flapping" cable modems, which are cable modems that have intermittent connectivity problems. A flapping cable modem can indicate either a problem with that particular cable modem, or it could indicate an RF noise problem with the upstream or downstream portion of the cable plant."3Views0likes0CommentsRe: intermittent cable modem resets caused by signal drop
I believe there is a larger systemic problem with the cable system. Cox has been adding more and more digital services to the network. I just added the new Cisco whole house set top boxes here at my house. These new boxes operate on new separate VLANS over the cable plant. Add the legacy analog TV carriers, digital phone service, legacy digital cable TV, and docsis 3.0 multiple bonded channel cable modems, there are allot of upstream and downstream signals contributing to intermods and noise (including other foreign noise and interference sources) on your neighborhood cable plant. I believe all of this can be managed but it will take a big effort on the part Cox network engineering. Not much evidence of this so far given the lack proactive responses we've seen. I have asked Cox tech support to answer a simple question to which they have refused to answer. ARE OTHER SUBSCRIBERS IN MY NEIGHBORHOOD SHOWING UP IN THE CMTS FLAP LIST? This would be very telling because if they are seeing multiple upstream hits at the head end, it pretty much eliminates all of the individual modem and house wiring assumptions in their typical trouble shooting aproach. I need my internet service to be reliable more than I need the extra upstream bandwidth that Cox cable offers over ADSL. That said, I have ordered and will receive CenturyLink 12/0.9 Mbs service next week. I will cancel Cox (after 7 years of service) if CenturyLink proves to be reliable. This is a big hassle for me but I don't have confidence that Cox can clean house and turn things around anytime soon.0Views0likes0CommentsRe: For Those Complaining About Random, Daily Disconnects....
I agree with you that this forum and the Customer Support Firewall will not make it up the Cox food chain. However, I do think that the more we talk about this issue the more buzz is created, and at some point, the message will leak out as more and more Cox customers join the chorus. I would like to think that the BBB could help in a situation like this but the truth is that the BBB looks at these complaints as isolated incidences, and that is certainly the way Cox will spin it. I believe there is a larger systemic problem with the cable system. Cox has been adding more and more digital services to the network. I just added the new Cisco whole house set top boxes here at my house. These new boxes operate on new separate VLANS over the cable plant. Add the legacy analog TV carriers, digital phone service, legacy digital cable TV, and docsis 3.0 multiple bonded channel cable modems, there are allot of upstream and downstream signals contributing to intermods and noise (including other foreign noise and interference sources) on your neighborhood cable plant. I believe all of this can be managed but it will take a big effort on the part Cox network engineering. Not much evidence of this so far given the lack proactive responses we've seen. I have asked Cox tech support to answer a simple question to which they have refused to answer. ARE OTHER SUBSCRIBERS IN MY NEIGHBORHOOD SHOWING UP IN THE CMTS FLAP LIST? This would be very telling because if they are seeing multiple upstream hits at the head end, it pretty much eliminates all of the individual modem and house wiring assumptions in their typical trouble shooting aproach. I need my internet service to be reliable more than I need the extra upstream bandwidth that Cox cable offers over ADSL. That said, I have ordered and will receive CenturyLink 12/0.9 Mbs service next week. I will cancel Cox (after 7 years of service) if CenturyLink proves to be reliable. This is a big hassle for me but I don't have confidence that Cox can clean house and turn things around anytime soon, with or without the assistance of the BBB.2Views0likes0CommentsRe: intermittent cable modem resets caused by signal drop
For those of you technically inclined; Here is a very informative document from Cisco: "Cable Modems Dropping Offline in a 2-way Cable Network" http://www.cisco.com/en/US/tech/tk86/tk89/technologies_tech_note09186a0080094bb1.shtml Maybe someone at Cox could take a look at this too! It is apparent to me that there are many sources of potential upstream interference on these cable systems. A good cable operator must send QUALIFIED network technicians out into the field and be ever diligent in diagnosing and solving these network problems. NOT JUST SENDING "TECHS" TO THE CUSTOMER HOMES LOOKING FOR CUSTOMER CAUSED PROBLEMS.0Views0likes0Comments