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03/23/2011: I just got my new Comcast Business 12/2 connection with a /29 static IP block up and running yesterday. It has only been operational now for two days, so I can't really make an accurate assessment on reliability, but so far I have had no connection problems. In the past, I have had problems with Comcast not being able to survive electrical storms and/or power outages. If at a future date I should see this problem is still present, I will update my review accordingly. For now I am hopeful that with the D3 upgrade, and Comcast now being a telephone company, that they have taken measures to keep their service live during storms and power outages. The only "problem" I had with getting on-line with the new service was with my Cisco RV082 router, not with the Comcast service itself or their required/supplied SMC router. It seems that when I just changed the router's mode from load balanced dual WAN operation to a single WAN/DMZ mode, that something in the existing config interfered with connectivity (the WAN connection kept bouncing, but the SMC router indicated that there was no problem with the connection. A push button initiated factory default reset on the RV082 followed by entering the new config parameters manually fixed that problem. Update 03/25/2011: Well, last night and today I just ran into my first thing that used to work with AT&T DSL, but does not work with Comcast HSI. My Vonage fax line can no longer send faxes (but receiving faxes still seems to work, and voice service still works well). The call connects, and you can see and hear the fax modem attempting to establish a data connection, but it just fails to do so. I swapped the fax modem and I also moved the fax line to another ATA, but nothing helped. Calling either Vonage or Comcast support would have just been a waste of time because past experience told me that they would just each blame the other for the problem. I just signed up for a Ring Central fax service because I am not going to reward AT&T by getting a POTS line, nor am I going to reward Comcast for deliberately interfering with competitive VoIP by getting CDV. Update 01/01/2012: Nothing much new to report, but the DSLR update bot is bugging me for a review update. Overall, the service has been quite reliable, and except for one outage shortly after I started using the service (caused by the install tech not doing his job properly), I have only had a few middle of the night "scheduled maintenance" outages. On a side note, after a recent firmware update in the SMC gateway, I can now send and receive faxes again using a Vonage line, but I am not yet convinced that it will be reliable enough to terminate my RingCentral dedicated fax line. My only complaint is that the Comcast firmware in the SMC gateway (which I am required to use) does not give me access to its firewall logs, and I can't find anyone at Comcast willing to set it up to send the logs to my syslog daemon (even though that capability is present in the SMC gateway). Update 08/11/2012: The DSLR update bot is bugging me for a review update, so here it is: Not much new to report (except that I have moved my previous Comcast HSI review to this Comcast Business Class review forum because I was not previously aware that this review forum even existed). The service still works well, and I have no major complaints. The biggest "problem" right now is that Comcast still has not released a workable IPv6 firmware for the SMCD3G-CCR gateway, and AFAIK, still has not decided how they are going to handle IPv6 for their static IP customers. Update 09/10/2012: A few days ago I dropped my /29 static IPv4 block and I am now using my SMCD3G-CCR in bridge mode. I can still get five IPv4 addresses, but they are dynamic instead of static. Using the DynDNS service has made that a relatively painless changeover. An added side benefit is that Comcast does not currently support native dual stack IPv4/IPv6 on static IP accounts, but it does support it on dynamic IP accounts (if you are are not using an SMC gateway in gateway mode). The only problem I have encountered after changing to use dynamic IP addresses is with my SamKnows box that does not seem to like not being behind a NAT router. But I may have resolved that by just putting it behind the Netgear WNR1000v2 router that was supplied by Comcast. The SamKnows box can't monitor my directly connected server boxes in that mode, but it seems to be working OK again now that it is once again behind a NAT router. My primary reason for doing it was financial. I am both a cheapskate and a retiree living on a relatively limited income, and now that Comcast will either put the SMCD3G into bridge mode or allow the use of an SB612x modem on a business class account, I decided to keep the $20 per month I was paying Comcast for the 5 static IPv4 addresses (and I will probably also buy my own SB6121 modem and pocket the $7 per month modem rental charge as well). Update 10/09/2012: Last week, I installed a purchased Motorola SB6121 and turned in my leased SMCD3G-CCR. I did so partly to save the $7.65 monthly modem rental fee, and also because some Comcast CSRs were causing problems for me by resetting my SMCD3G-CCR and taking it out of bridge mode (which would disable my entire network). I was able to do a self install and on-line activation (which surprised me because I thought that Comcast Business Class required a tech visit for a modem swap), and there were no problems with the changeover. After discovering that Comcast Business Class allowed modem self installs and activations, I experimented and found that I could also activate my old DOCSIS 2 D-Link DCM202, and it also worked on the business class service (even though Comcast says only the SMC gateways and the SB612x modems are officially allowed). So I now have a hot swap spare already activated for emergency use just in case my new SB6121 goes up in smoke (the DCM202 doesn't support native IPv6, but it would keep my connection up until a replacement SB6121 was available). SamKnows, Vonage, and IPv6 Update 01/14/2013: SamKnows Update: I continued to have problems with the SamKnows TL-WR1043ND box intermittently locking up my entire network, so I contacted SamKnows, and terminated my participation in that program about a month ago. The box apparently just could not handle my multiple public IP address connection. Vonage Update: I was recently able to once again start using Vonage to send and receive faxes over my Comcast connection. For details on how I did this, see my review update comment at: »Update on solution for using Vonage for VoIP faxing (this should also be visible in the "comments" section at the end of this review). IPv6 Update: I have been using Comcast's native dual IPv4/IPv6 implementation since I changed from a static IPv4 account to a dynamic IP account back in September, and Comcast's IPv6 implementation has been working as advertised. I even invested in a new IPv6 compatible D-Link DIR655 router because it had the capability of syncing multiple IPv6 devices with the DynDNS service (and that also seems to be working OK). However, since I have been using Comcast's native dual IPv4/IPv6 stack I have started noticing that many mainstream sites (who are now starting to use IPv6) would often be very slow in loading, and sometimes would just time out altogether until I did multiple refresh/reloads of the balky URL (and even that did not always work). I found that usually when this happened, a site would be attempting to use a CDN or round-robin DNS selected server that was using an IPv6 address. and that server would be either very slow in responding, or would simply appear to be dead. In such cases, if I simply disabled IPv6 in the PC that was trying to access the balky site(s), the site(s) would work with no problems with only IPv4 active. I have posted an example of this IPv6 vs IPv4 symptom in a review comment at »IPv6 vs IPv4 reliability through my Comcast connection because I needed to use imbedded code and the review update script does not allow imbedded code. This problem had kind of slowly crept up on me, and I had almost forgotten how fast my Comcast connection used to be. I have therefore reluctantly reverted to using Comcast's 6to4 IPv6 tunnel in both my primary and guest routers, and my network is now using IPv4 as the primary protocol stack once again (but the 6to4 tunnel will still allow me to access IPv6 sites if needed). I will occasionally (and temporarily) enable Comcast's native dual IPv4/IPv6 stack in my (isolated) guest router to see if the rest of the Internet has caught up with Comcast before I permanently turn native IPv6 back on again. Sometimes the leading edge is also the bleeding edge. IPv6 problem update 02/12/2013: It is possible that the IPv6 problems I was seeing have been (at least temporarily) fixed. The problem may have been related to my DIR655 sometimes getting a "/60" and sometimes getting a "/64" PD prefix assignment combined with a CMTS bug. See NetDog]'s post »Re: [IPv6] Comcast IPv6 Address Assignment/Delegation for details. Since that announcement, I have only been getting the "/64" PD prefix assignments, and I do not currently see the problem with CDN and round robin IPv6 servers frequently not responding. DSLR nag bot update 08/23/2013: The DSLR nag bot is asking for review updates, so here it is: Currently using Comcast Business Class 16/3 speed tier through a Motorola SB6121 modem feeding several D-Link routers from a ZyXEL switch. The service is working as advertised, and I have no Comcast HSI related problems to report at this time (none of my earlier VoIP or IPv6 problems have returned). My only minor complaint is that Comcast's Business Class web hosting service does not yet support IPv6, so full IPv6 implementation for my »portscan.dcsenterprises.net site is not yet possible (I have to use an external hosting service for the actual port scanning function since Comcast blocks some of the ports being tested even on their business class accounts). However, I am hopeful that this will be corrected once Comcast also fully supports IPv6 for all of their business class accounts. DSLR nag bot update 09/14/2014: The DSLR nag bot is once again asking for a review update, so here it is: Nothing much new to report -- the service is still the same as my last report. One minor change was that my original contract auto-renewed back in March, but that changed nothing (including the monthly price -- I had been expecting the price to go up by $10 per month, but it remained the same). The only somewhat annoying thing that has happened recently is that the "My Account" site started showing a status of "LEASEDMODEM" for my personally owned SB6121 modems a couple of months ago. So far that has not resulted in Comcast billing me for non-existent leased equipment, but I am not optimistic considering their well known tendency to do just that (despite getting a written reply from BCI support that such a thing would never happen). DSLR nag bot update 03/27/2015: The DSLR nag bot is once again asking for a review update, so here it is: Nothing much new to report. The service still works well, and Comcast has again done an auto-renewal on my original contract, so the price and services have remained the same (despite a price increase and service downgrades for the same tier for new customers). The only thing that has changed is that since Comcast started automatically forcing an IPv6 /56 PD prefix for BCI customers who use their own modems and routers (as opposed to a negotiated /60 to /64 PD prefix), my IPv6 connectivity has greatly improved (no more random PD prefix changes). DSLR nag bot update 11/01/2015: The DSLR nag bot is once again asking for a review update, so here it is: Nothing much new to report. The service still works well, and I have no major complaints. DSLR nag bot update 03/05/2017: The DSLR nag bot has once again asked for a review update, so here it is: Nothing much new to report. The service still works well, and I have no major complaints except that the first of the year, Comcast apparently terminated the automatic contract renewal so that they could raise my monthly payment from $60 to $70. But at least being on a month to month plan means no ETF should AT&T actually start providing FTTP (or even VDSL2) service to my residence (I'm not holding my breath). AT&T Migration Update 04/07/2017: I just notified Comcast that I am terminating my BCI account. While they did not try to enforce an ETF, they did insist that I needed to give them 60 days notice -- but the lower AT&T price for a faster 25/5 speed tier (VDSL2, not FTTP) will make that up within that same period. member for 19.7 years, 7695 visits, last login: 3.5 years ago updated 6.9 years ago
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