Longmont Colorado HSI Cable Modem Issues: Locks and Drops
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liptonbrisk @ 16th Oct 09:24PM:
Longmont Colorado HSI Cable Modem Issues: Locks and Drops
1. Longmont, CO (Friend in Broomfield experiences same thing)
2. Modem randomly goes out (Motorola SB5100-2.3.8.0-GA-00-NOSH). Can't access through 192.168.100.1. Online light blinking, not solid. Power cycle fixes everything. Occurs once every 2-3 days.
3. Randomly occurs, slight tendency towards mid-day.
4. Motorola SB5100
Software Version: SB5100-2.3.8.0-GA-00-NOSH
Hardware Version: 3
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4
5. Cable modem to D-Link 800 series to D-link 8port Gb switch.(was working fine for 5 months until recent cable modem issues)
6. Windows firewall, Nod 32 2.7 w/ recent updates.
What indicator lights does the modem have and the current status of each. (i.e. constant or blinking)
....During failure online light blinks. All other lights are solid.
• Post modem's Signal Levels
Downstream Value
Frequency 531000000 Hz Locked
Signal to Noise Ratio 38 dB
Power Level 2 dBmV The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
Upstream Value
Channel ID 7
Frequency 29200000 Hz Ranged
Power Level 47 dBmV
• Post modem's Log Entries
2009-10-16 18:05:20 3-Critical R002.0 No Ranging Response received - T3 time-out
2009-10-16 18:05:17 3-Critical D001.0 DHCP FAILED - Discover sent, no offer received
2009-10-16 18:01:56 3-Critical R002.0 No Ranging Response received - T3 time-out
2009-10-16 18:01:53 3-Critical D001.0 DHCP FAILED - Discover sent, no offer received
2009-10-16 17:58:31 3-Critical R002.0 No Ranging Response received - T3 time-out
2009-10-16 17:58:24 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
2009-10-16 17:58:17 3-Critical R002.0 No Ranging Response received - T3 time-out
2009-10-16 17:37:24 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
2009-10-16 17:37:11 3-Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
2009-10-16 17:37:11 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
• Give a description of the cable & splitters configuration in your home leading to the modem.
Line from outside > comcast approved and installed 2way splitter > Modem
Thanks for any suggestions, this problem is bugging me! Do I just need to replace the cable modem? Again, my symptoms are: Modem randomly goes out (Motorola SB5100-2.3.8.0-GA-00-NOSH). Can't access through 192.168.100.1 after failure. Online light blinking, not solid. Power cycle fixes everything. Occurs once every 2-3 days.
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JJJohnson @ 17th Oct 01:47AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I'm in Fort Collins. It's just Comcast fiddlefucking around with the network. I've never had so many outages as I've had in the last two or three weeks in all the years I've been on the network. Transfer speeds are also down, even though connection speeds are up. My guess is that their network in Northern Colorado doesn't have anywhere near the capacity needed to support these speeds and that a few bandwidth hogs taking advantage of the faster speeds are bringing the whole thing to its knees.
I'm downgrading the service to the lowest priced tier on Monday. There's no sense in paying for this. Maybe if they get it back together I'll turn it back up some day.
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Tordek @ 17th Oct 03:09AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Topic seems resolved by the above poster. We should get his tech ID and suggest a performance raise for his expert explaination... Please post your documents and sources of comcast "fiddlefu€£ing" As you so rightly call it.
OP, I apologize for that but it's amazing how quick this starts. Usually it's the 3rd or 4th post. Does it go down at specific
times?
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liptonbrisk @ 17th Oct 11:28AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
No worries,
It tends to happen while I'm away at work, it's hard to pin down a time, usually between 10am and 2pm? I only catch it during the day if I try to remote desktop in, otherwise I come home to find it down. It's annoying because it's not every day. It was Tuesday @ 4pm and Friday mid-day this week.
It also says the same modem log entries (see above) every time an outage occurs.
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andyross @ 17th Oct 11:50AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
The online light blinking means it is trying to authorize and provision itself. It also then accesses some special FTP sites to get configuration info, check firmware, and get the time. Any one of those getting stuck can cause problems.
Also, it might be interesting to see if your IP address is changing at times. I sometimes wonder if maintenance causes your current address to be invalid and it gets blocked in the system and you need to reboot to get it refreshed.
Also, there seems to have been recent firmware updates to several Motorola models. It could also be causing some issues.
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RockyBB @ 17th Oct 01:12PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
said by Tordek :
Topic seems resolved by the above poster. We should get his tech ID and suggest a performance raise for his expert explaination... Please post your documents and sources of comcast "fiddlefu€£ing" As you so rightly call it.
I think the guy might be correct. I've experienced the same symptoms lately. I work at home, and use VOIP phones, and once or twice a week Comcast just dies, and the phone calls disconnect and the email can't be reached. I have the Scientific Atlanta box and the "cable" light goes dark. A few seconds later it all comes back by itself.
[edit] since I found this thread, I'll start a log of when I notice the problems and maybe we all can find some commonality.
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Tordek @ 17th Oct 05:33PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Flashing online light can also mean BPI. Op your signal levels look ok. I would say that there could be some
issue for you regarding the firmware moto pushed. Also have you spoken w/ comcast regarding any ingress or anything on the network? They will most likely send a premise tech out. There are things they can see that your modem can't. Upstream SNR for example. So we don't get disparity of 2 different issues
rocky, the absence of your cable light and just flashing indicate you hve lots comms to the network. I would suggest getting your coax signals checked.
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liptonbrisk @ 17th Oct 09:12PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Thanks all for the comments so far.
IP Address isn't changing. It's the same everytime I power cycle.
I *just* called comcast as my internet died. He tried to do a reset but couldnt' even talk to the modem, but a power cycle fixed everything (like usual). We both came to the conclusion that it is most likely hardware related, so I'm going to try out a new SB6120 this week once the office opens on Monday. I own my current modem, so I don't want to risk rolling a tech to find out it's my fault and pay service fees. If it is my modem I'll just drop the coin for a 6120.
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RockyBB @ 19th Oct 03:42PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
mine went out at 1:16pm today (Monday), and restored by itself within two minutes.
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liptonbrisk @ 20th Oct 09:28AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I recently switched the small business I work for over to comcast business, it hiccuped twice yesterday. Once at 11am, again at 5pm. They're rolling a tech this morning to my office. Since we have VOIP phones even the quickest disconnects are a huge issue.
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RockyBB @ 20th Oct 09:34AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
said by liptonbrisk :
Since we have VOIP phones even the quickest disconnects are a huge issue.
In addition to VOIP, I've also got a Sprint Airave, and yesterday's hiccup took that, and my phone call, down hard! Please update with Comcast's diagnosis...
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CO_Chris @ 20th Oct 09:52AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I am Also in Broomfield @ 128 St and i have seen this i have CDV and the only light blinks is the online one but i was told from a CSR that is this the norm for a phone modem. Also i went down from 16/2 to 12/2 since i did not see the speed on D/L's the funny thing is my HSI is working better since i did this back on Friday my pages seem to load faster.
Here is a pic from today.
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RockyBB @ 20th Oct 05:39PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Mine went down at 3:10pm today, took 4 (long) minutes to self restore.
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RockyBB @ 20th Oct 06:38PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Dropped again at 4:20pm today, self-restored within 2 minutes.
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liptonbrisk @ 20th Oct 09:22PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
No outage today. Tech checked signals and found everything normal... I'm just going to start keeping a detailed log if it reoccurs and use it to get some $$$ back. :/
I think the DOC 2-3 upgrade is causing them to jack around. Why they decide to do that during the day I have no idea.
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liptonbrisk @ 21st Oct 09:53AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Internet dropped at 2:13AM. Woke up to the modem unaccessable through IP address. Power cycled and everything's dandy. Log files indicate T3 Timeouts and DHCP and Sync failures from 4:30am on [the log history at 2:13AM got bumped out :( ]
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nerdburg @ 21st Oct 12:06PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
That sounds like maintenance/upgrades (fiddlef*cking as it were...)
--
[Insert Comcast employee disclaimer here.]
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andyross @ 21st Oct 12:32PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
When we were upgraded to D3 last year (mid October), there were various outages at least 2-3 times a week until Christmas. Some only affected the modem, others took everything out.
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Quaoar @ 21st Oct 01:54PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I'm in Fort Collins. The same thing is happening here, at least at my modem. I am retired and spend a lot of time on line. My modem has been dropping off line (blinking on line light) at roughly 9-10 am and 2-3 pm for ten to fifteen minutes each time and at least last week, only Monday-Friday.
I call comcast each time. Several instances, my call to CS was intercepted with the announcement that there were known service outages. This leads me to suspect that the outages are maintenance related, particularly given the morning and afternoon outage times during the workweek.
There have not been any outages this week.
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INTENS1 @ 21st Oct 03:25PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I had the exact same problem you're having (Springfield IL). After "many" calls to Comcast over a two week period and trying different ideas, I decided to buy the SB6120. That was three weeks ago and I've not lost connection once.
--
Anticipate Nothing...Expect Everything
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liptonbrisk @ 21st Oct 03:29PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
said by INTENS1 :
I had the exact same problem you're having (Springfield IL). After "many" calls to Comcast over a two week period and trying different ideas, I decided to buy the SB6120. That was three weeks ago and I've not lost connection once.
Yeah, I think I might just go the 6120 route. Plus it looks really cool. :D
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RockyBB @ 21st Oct 05:21PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
dropped again at 2:30pm. always during a phone call, like there's a little man inside the cable modem waiting for me to make an important call... self restored within 2 minutes.
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n0xlf @ 28th Oct 06:14PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
This may be related to this:
»SB5100 constantly losing upstream channel
And possibly related to the recent SB5100 firmware update if that is what you are running..
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RockyBB @ 28th Oct 06:21PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I don't have a SB5100 -- have a Scientific Atlanta little black box. Service has also been stable since my last posting (at least I haven't noticed any drops); so maybe the Comcast butt crack boys have worked out their issues.
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RockyBB @ 30th Oct 01:44PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
dropped twice yesterday at 6:30pm and 9:05pm
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kucharsk @ 4th Nov 05:32AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Same here in Louisville, CO.
Comcast is screwing around with their network, ostensibly working towards DOCSIS 3, but each time it returns it's just a little bit slower in accessing the Internet, perhaps due to new DOCSIS 3 customers hammering their existing connections.
Thus connections to "real" sites are slower, but connections to speedtest.comcast.net are as fast or faster than before.
Except for their unannounced multi-hour outages overnight. :(
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telarium @ 5th Nov 11:18AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Fort Collins, as well. Dropping fairly regularly.
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apray @ 7th Nov 08:49AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Hi, I have seen 2 different symptoms in this thread - one where a disconnect repairs itself after a few minutes and another where the only fix is a power cycle of the modem. Which issue did you have? (I have the 2nd, have to power cycle.) You posted it fixed on 10/21 - is it still fixed?
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apray @ 11th Nov 07:58AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I am in Longmont and am getting regular drops overnight that require a modem power recycle to fix. Are others still having this problem? Any fixes?
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anon @ 11th Nov 12:46PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Same problem here. This began this past weekend. Will get dropped and require a modem restart to get re-connected. Big downer for playing online games. It's inconsistent in that sometimes I will get several hours before the next drop, and sometimes it will be 15 mins. Signals all look good.
Greenwood Village, CO
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apray @ 12th Nov 01:51PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
I had 2 drops yesterday and called Comcast. They are coming out today. I also had 3 drops today. So far it has only been happening to me in the mornings.
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bradbn4 @ 14th Nov 03:38PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
In Colorado Springs I have been having the same problem - loss of access to the internet - the router is fine (linksys with dd-wrt loaded), the cable modem does not always show the issue - but if I do a remote reboot it seems to be happy(er). (some times it will auto recover if I don't do anything - no pattern on length of outage, etc)
Last night Fri 13th --- I had at least 15 drop outs - reboots, resets, and nothing seemed to make it happy for more than 10 - 15 mins.
I was only using IM - so that's no big bandwidth hog. Earlier in the day I could not bit-torrent a copy of Fedora 12 beta - however, I was able to download the image directly with average download speed for me.
A friend that lives 10 miles away was having similar issues - drop outs, reboot's of modem / router.
I figured it was time to buy a backup modem - stats on my old modem
Software Version: SB5100-2.3.8.0-GA-00-NOSH
Hardware Version: 1
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4
Common error messages
2009-11-14 04:09:10 3-Critical R005.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out
2009-11-13 21:19:06 4-Error C401.0 DCC-ACK not received
1970-01-01 00:00:04 3-Critical R002.0 No Ranging Response received - T3 time-out
The 1970 date time stamp was due to a re-load of the base conif of the modem.
My guess is they are fidding around but after 5+ years it was time for me to have a backup modem on hand
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andyross @ 14th Nov 04:55PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
said by bradbn4 :
2009-11-14 04:09:10 3-Critical R005.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out
2009-11-13 21:19:06 4-Error C401.0 DCC-ACK not received
1970-01-01 00:00:04 3-Critical R002.0 No Ranging Response received - T3 time-out
The DCC-ACK is interesting. That implies it tried to do a Dynamic Channel Change, but something prevented it from finishing?
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bradbn4 @ 14th Nov 08:09PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
Here is a bit more of the log - not all observed failures -- loss of internet - were recorded.
2009-11-14 04:09:10 3-Critical R005.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out
2009-11-13 21:19:06 4-Error C401.0 DCC-ACK not received
1970-01-01 00:00:04 3-Critical R002.0 No Ranging Response received - T3 time-out
2009-11-13 21:18:40 6-Notice E112.0 SW download Successful - Via Config file
2009-11-13 21:18:13 6-Notice E102.0 SW Download INIT - Via Config file d11_m_sb5100_silvertb25_c01.cm
1970-01-01 00:04:58 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:04:16 3-Critical D001.0 DHCP FAILED - Discover sent, no offer received
1970-01-01 00:00:53 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:35 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:17 3-Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:00:17 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:15 3-Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:00:15 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
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andyross @ 15th Nov 08:36AM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
said by bradbn4 :
2009-11-13 21:18:13 6-Notice E102.0 SW Download INIT - Via Config file d11_m_sb5100_silvertb25_c01.cm
It looks like you have a port 25 blocking config file. Comcast thinks your computer was abusing mail?
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bradbn4 @ 16th Nov 06:39PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
said by andyross :said by bradbn4 :
2009-11-13 21:18:13 6-Notice E102.0 SW Download INIT - Via Config file d11_m_sb5100_silvertb25_c01.cm
It looks like you have a port 25 blocking config file. Comcast thinks your computer was abusing mail?
If they were - they forgot to tell me - I use web mail vs pop3 or other setup.
Until I get a fixed IP address I don't do local mail.
I figure it is to prevent people setting up their own mail server.
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EG @ 16th Nov 11:28PM:
Re: Longmont Colorado HSI Cable Modem Issues: Locks and Drops
said by bradbn4 :
I figure it is to prevent people setting up their own mail server.
Nah. It's to prevent a spam botted computer from spewing spam on to their network.
--
Remember those who served/serve !
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