[Equip] Comcast pushing new modem
I've owed my own modem for about 8 years now on Comcast. About a week ago I get a flyer stating that I need a new modem to get the fastest speeds possible. Right now I'm getting about 20MB down. I'm...
View Article[Speed] Ping/Latency Spikes
Been getting ping/latency spikes the past about 3 weeks or so. Had a tech up here who stated that he thought he found a somewhat loose connection, didn't fix the problem. Seems to only happen in the...
View Article[Connectivity] Modem Keeps Rebooting
For the last week, my Ubee DVM3203B modem reboots about every 12 hours. My signal levels are generally perfect, near 0, though there are occasional wild swings to almost -8 on some channels. The big...
View Article[Speed] Comcast 2014 Side Discussion about Doubling Speeds
Mod Note: Tracking here, please: https://secure.dslreports.com/forum/r28975270-Speed-Report-Tiers-Doubling-In-Speed-Here...
View Article[Equip] Router upgrade
Been having speed issues today, so while I was testing things out and rearranging. I directly hooked up my computer to the modem and noticed the huge speed difference. Originally was getting 35 down...
View Article[Connectivity] dropping lease times
I just noticed that the lease lifetimes have been dropping since about a week ago. I wonder what Comcast is up to? Maybe just some routine maintenance. All three leases (IPv4, IPv6 addr, and IPv6 PD)...
View Article[Connectivity] Need help - getting DDoS'd on business connection
Hello.. not sure where to go with this, but my connection is being DDoSed, and has been since yesterday.. my firewall is keeping up with it, but its causing horrible speed problems. Any...
View Article[WiFi] Replaced my Belkin for a Netgear
I disconnected my Belkin N600 DB Router and installed a Netgear N750 DB Gigabit Router, model WNDR4300 today. After running the Netgear "Genie" I downloaded an updated Firmware version. I just wanted...
View Article[CustSvc] Paid for new, got used battery?
Comcast provided me with a DCP3939 to replace their failed TC gateway (would not accept firmware updates/constant reboots). I had ordered a voice backup battery for the TC and naturally it arrived...
View Article[Connectivity] Help With Cascading NAT and Cisco DCP3939
Running into an issue with cascading/double NAT on my Comcast Xfinity internet connection. Current setup is as follows: Modem: Cisco DCP3939 with wireless disabled. DMZ setup for static IP address of...
View Article[Connectivity] T3 timeouts Zoom 5341J
Wondering if anyone could assist me? Recently my connection has been dropping quite frequently. Not sure if this helps, though here is some diagnostic info: Hardware Version A0 Software Version...
View Article[Equip] Would it benefit me to purchase the SB6183?
I currently on the Blast 50Mbps and I usually get around 56Mbps speeds. I am using the Xfinity supplied Aris SMCD3GNV Modem/Router that I bridged to my asus rt-ac68u. If I buy the Motorola SB6183 will...
View Article[Bill] Promo ends in Feb or March 2015
Earlier this year in Feb I called Comcast to put me on a promo for one year. I was wondering if I can call again during the last 2 weeks of December even though my promo ends in Feb or March?
View ArticleNeighbors can get cable internet. Can I?
Hello, I live about 800 feet from the road where both comcast and att uverse can serve. However, neither of them can service me from there. My neighbor can get both of these providers, he lives the...
View ArticleIs there any work being done in Eastern DT Littleton, CO
For the past couple of weeks my neighbors and I have been experiencing all kinds of individually strange things happening. Speed drops, can't send eMail, IPv6 popping on and off. Personally my speed...
View Article[WiFi] Limited Access and Dropping Out.
Looking for a bit of help. Every ten or so minutes I occur a problem like this: http://prntscr.com/57k7v7 Or it will drop into "limited access" Like this: http://prntscr.com/57k9f9 The only way I solve...
View ArticleComcast Caller ID On TV
There's an older thread about this. But I wanted to start a new one because I just had a positive experience regarding the issue. And thought my experience might help others. About 2 weeks ago - I...
View Article[Price] Promotion Price Question
I called Comcast about continuing a promotion that's running out. They are offering me $165.56/month for "double play" which will include internet blast (105 down, 10 up) with HBO, Starz, Max and...
View Article[IPv6] IPv6 not reliable
Using ISC DHCP client 4.2.6 (dhclient -6 -P ....) /w SB6121 occasionally my /64 PD stops passing traffic. Manually forcing lease renewal restores traffic. While this always happens when modem reboots...
View Article[Speed] Reply to yopoman
said by uid://1906694 :My speed of 8.82 Mbps is actually about double what it has been, but I am still not getting anywhere remotely close to the 50 Mbps I pay for. My router and modem are DOCSIS 3.0...
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