Kable
@comcast.net
| [Connectivity] Intermittent Connection
Location: Germantown, MD
For the past couple of months my connection keeps cutting in and out all day long. The connection goes out (I can see all of the lights (except power) go out on the modem. Usually a couple minutes later the connection will come back up. Here are the steps I've taken so far to try and resolve the problem (none of them have resolved the issue):
I had a bunch of splitters, so I got rid of the splitters and replaced them with one amp/splitter.
I also replaced my modem last week (my speed improved, but I'm still having the intermittent connection).
I've called Comcast at least 4 times. Also, a technician came out today to look at things (of course he found nothing wrong and it didn't cut out while he was here).
The modem I'm currently using is a Motrola SB5120.
Software Version: SB5120-2.19.0.10-SCM01-NOSH
Hardware Version: 4
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4
I have my cable modem connected to a Linksys Ethernet/Wireless router. I have two network hubs. Two of the computers on my network use ethernet, my laptop uses wireless. I also have VOIP connected using an ethernet connection.
Two of my PCs are using the Windows Firewall and one is using Zonealarm.
Signal Levels Downstream:
Frequency 615000000 Hz
Signal to Noise Ratio 37 dB
QAM QAM256
Network Access Control Object ON
Power Level 7 dBmV
Signal Levels Upstream:
Channel ID 8
Frequency 30000000 Hz
Ranging Service ID 1351
Symbol Rate 2.560 Msym/s
Power Level 43 dBmV
Logs below:
Time Priority Code Message
2008-03-08 11:03:08 7-Information SNMP: Working in SNMP V1/2c Only NmAccess mode
2008-03-08 11:03:07 7-Information INITIALIZATION COMPLETE - MODEM IS OPERATIONAL
2008-03-08 11:03:07 7-Information B401.0 Authorized
2008-03-08 11:03:06 7-Information PROG: SW Download File name the same as currently run.
2008-03-08 11:03:06 7-Information SEC: Co-Signer CVC from configuration file was verified
2008-03-08 11:03:06 7-Information REGISTRATION COMPLETE - Waiting for Operational status
2008-03-08 11:03:05 7-Information REG: Capability type incorrectly negotiated by CMTS
2008-03-08 11:03:05 7-Information Registration file - downloaded
2008-03-08 11:03:04 7-Information Trying to download Configuration file ...
2008-03-08 11:03:04 7-Information Time of day - retrieved
2008-03-08 11:03:03 7-Information DHCP - parameters acquired
2008-03-08 11:03:03 7-Information DHCP: ACK: Setting (*) CM TFTP Boot file: d11_m_sb5120_silverpboost_c01.cm
2008-03-08 11:03:03 7-Information DHCP: Setting CM IP address to: XX.XXX.XXX.XX
2008-03-08 11:03:03 7-Information DHCP: Setting (*) CM Syslog Server address to: 0.0.0.0
2008-03-08 11:03:03 7-Information DHCP: Setting (*) CM Time Server address to: XX.XX.XX.XX
2008-03-08 11:03:03 7-Information DHCP: Setting (*) CM Subnet mask to: XXX.XXX.XXX.X
2008-03-08 11:03:03 7-Information DHCP: Setting (*) CM Gateway address to: XX.XXX.XXX.X
2008-03-08 11:03:03 7-Information DHCP: OFFER: Setting (*) CM TFTP Boot file: d11_m_sb5120_silverpboost_c01.cm
2008-03-08 11:03:03 7-Information DHCP select: Setting (*) CM TFTP Server address to: XX.XX.XX.XX
2008-03-08 11:03:03 7-Information DHCP: Offered (*) CM IP address to: XX.XXX.XXX.XX
The cable from the street is going into an amp/splitter with 8 ports: The cable internet connection is coming straight from this amp/splitter.
Thanks in advance for your help. |
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daveinpoway
Premium
join:2006-07-03
Poway, CA
| The modem signal levels you posted look fine; have you noticed that they change by any significant amount?
If you can't locate any bad cables or connectors yourself (by wiggling them), then I suggest calling Comcast Level 2 or 3 support (forget Level 1- they probably won't know what you are even talking about) and see if they can remotely monitor your connection for a week or two. Hopefully they will see something happening that will give them a clue as to what is wrong. Intermittent troubles can be a bear to troubleshoot. |
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Kable
@comcast.net | I'll give wiggling the cables a try. Thanks. |
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