Low, low Speeds 10MB Bristol Area

[DragonRebornUK]

Hi All, First Post on this forum. Looking for some expert help for my problem! , which i have read many times in this forum, (enuff begging yet? ) I am getting lots of problems on my 10Mb connection. Ive been on TW BB since it started in my area and have kept the same modem throughout! I have a Motorola SB4100. Have been very happy with it until recently. ( Last three months) Im getting really low speeds, cant even keep up with a online radio station at 192Kbps, keeps buffering. Downloading from the blueyonder ftp i get max 240, my usual >100. Its really getting me down. The upstream is FINE. maxes out at 360 and above at times. I have changed Upstream channels on modem config page, doesnt make a difference. I put a wireless card into my machine and hooked into someone near who has a telewest connection ( judging by IP gateways etc) No problems, radio plays fine and webpages download quick, download speed better than mine, but must live a little way away cuz speed on wireless is only around 2-4 Mb. I have rang support many times, they had a word with second level, they agreed that im getting varying download speeds but will not send an engineer out until someone near me reports the same problem as me. Thinking about getting BT line put in!
Few facts about my system and network and router.
My system is no slouch!
Athlon XP 4600+ Dual Core
2Gig RAM
7800GS Graphics
Network onboard 100Mb
Sound Card Audigy Platinum
Router - Linksys WRT54G Ver 5 (Updated Firmware) 1.00.9
Modem - Motorola SB4100
HELP PAGE INFO
Software Version: SB4100-0.4.9.6-SCM01-NOSH
Hardware Version: 0
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.3
SIGNAL PAGE
Downstream Value
Frequency 331000000 Hz Locked
Signal to Noise Ratio 33 dB
Power Level 6 dBmV
Upstream Value
Channel ID 3
Frequency 29200000 Hz Ranged
Power Level 51 dBmV
TOP OF LOG PAGE FROM LAST BOOT
061030204426 4-Error X501.35 Unit Update Failed.
061030204426 8-Debug F502.1 Bridge Forwarding Enabled.
061030204425 4-Error E107.0 SW Upgrade Failed after download - Incompatible SW file
061030204425 4-Error X501.28 Unit Update - Not updating. This image is not for this platform.
061030204423 8-Debug M571.6 CM Cert Upgrade Enabled. Initiate via SNMP
061030204423 8-Debug M571.9 Missing CM Cert Upgrade TLVs.
061030204423 8-Debug M570.1 Motorola CM certificate required
061030204423 8-Debug F502.2 Bridge Forwarding Disabled.
061030204422 7-Information X500.0 Attempting Unit Update
061030204417 6-Notice E102.0 SW Download INIT - Via Config file cm-10240-384
061030204417 8-Debug I503.0 Cable Modem is OPERATIONAL
061030204416 8-Debug F502.1 Bridge Forwarding Enabled.
061030204416 8-Debug F502.3 Bridge Learning Enabled.
061030204416 8-Debug B918.0 Baseline Privacy is skipped
061030204416 6-Notice I401.0 TLV-11 - unrecognized OID
061030204416 6-Notice D501.10 TFTP, Unknown SNMP 30 11 06 0C 2B 06 01 04 01 8B 15 4D 01 03 02 00
061030204415 7-Information X519.8 Unit Update - GGFGGD - SCD flags
061030204415 8-Debug I500.1 DOCSIS 1.0 Registration Completed
061030204415 7-Information I500.4 Attempting DOCSIS 1.0 Registration
061030204415 7-Information D509.0 Retrieved TFTP Config File SUCCESS
061030204415 7-Information D507.0 Retrieved Time....... SUCCESS
************ 7-Information D511.0 Retrieved DHCP .......... SUCCESS
************ 5-Warning D3.0 DHCP WARNING - Non-critical field invalid in response
************ 4-Error D530.8 DHCP - Invalid Log Server IP Address.
************ 4-Error D530.6 DHCP - Invalid Time Offset.
************ 5-Warning D520.2 DHCP Attempt# 1 BkOff: 5s Tot DSC:1 OFF:1 REQ:1 ACK:1
************ 7-Information D0.0 DHCP CM Net Configuration download and Time of Day
************ 7-Information T500.0 Acquired Upstream .......... SUCCESS
************ 8-Debug T503.1 Acquire US with status OK, powerLevel 51, tempSid 745
************ 8-Debug T505.0 Acquired Upstream with status OK
************ 7-Information T501.0 Acquired Downstream (331000000 Hz)........ SUCCESS
************ 8-Debug T509.0 Acquired DS with status OK, DS Freq 331000000, US Id 3
************ 7-Information I510.0 *** BOOTING *** SB4100-0.4.9.6-SCM01-NOSH
Hope i never over did it with INFO OVERLOAD!!
Please help!!!!!!
What should be my next step ?
Sorry for boring u!
Cheers
Matt
PS Have done a XP re-install since problems started, updated AGP driver. bad mistake! OOPS!
If you need more info! Just ask what you need, and how to retrieve it ill post it!
Many Thanks Again!

[thelem]

I'm in Bristol too and speeds are fine, so its probably something to do with your computer. Are you running any filesharing software (even if its not downloading anything) or anything else that uses lots of bandwidth? Have you got anti-spyware and anti-virus programs on your computer? Do you know anyone with a laptop that you could temporarily connect to your internet connection (when your PC was disconnected) to run a speed test with?

[opelfruitcase]

Go to http://192.168.100.1 with no proxies set up - what does it say there? Try looking for something along the lines of 'Downstream Modulation' or the like - if its using QAM256 or similar then maybe your modem is getting seriously stressed and needs replacing!

[DragonRebornUK]

Originally Posted by opelfruitcase

Go to http://192.168.100.1 with no proxies set up - what does it say there? Try looking for something along the lines of 'Downstream Modulation' or the like - if its using QAM256 or similar then maybe your modem is getting seriously stressed and needs replacing!

Hi there Opel. Just came back from a few days holiday. Had a look through all my modem pages and i couldnt find anything on downstream mods or anything like that. looked for QAM nothing in there. Its a very early biege (yuck) modem!
Also while i was on holiday the first day did a few speedtests on www.speedtest.net and during the day i was very quick, up to 9.5Mb. Had a go first night time again, it went down to less than a 1Mb. Is it cuz the local BY router is overloaded in aztec ?
Think its unfair on me having low speeds when im at home and high when im away in work!

[opelfruitcase]

Originally Posted by DragonRebornUK

Hi there Opel. Just came back from a few days holiday. Had a look through all my modem pages and i couldnt find anything on downstream mods or anything like that. looked for QAM nothing in there. Its a very early biege (yuck) modem!
Also while i was on holiday the first day did a few speedtests on www.speedtest.net and during the day i was very quick, up to 9.5Mb. Had a go first night time again, it went down to less than a 1Mb. Is it cuz the local BY router is overloaded in aztec ?
Think its unfair on me having low speeds when im at home and high when im away in work!

Couldn't possibly say anything relating to TW's network as don't know (other than being a telephone customer when I lived in Filton some 7 years ago!). Try saving all the pages from 192.168.100.1 that display info regarding your connection, with the exception of the activity log you posted previously. We'll take it from there.

[DragonRebornUK]

Will do once i get home! Sat in work supposed to be working, but home internet takes priority

[DragonRebornUK]

Status Page
Task Status
Acquire Downstream Channel Done
Obtain Upstream Parameters Done
Establish IP Connectivity using DHCP Done
Establish Time Of Day Done
Transfer Operational Parameters through TFTP Done
Register Connection Done
Cable Modem Status Operational
Initialize Baseline Privacy Skipped

Signal Page
Downstream Value
Frequency 331000000 Hz Locked
Signal to Noise Ratio 33 dB
Power Level 8 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 3
Frequency 29200000 Hz Ranged
Power Level 49 dBmV

Address Page
Skipped too much private info!

Config Page

Frequency Plan: European PAL I/B/G
Upstream Channel ID:3
Frequency (Hz):311000000
Enable DHCP Server
The SURFboard cable modem can be used as a gateway to the Internet by a maximum of 32 users on a Local Area Network (LAN). When the Cable Modem is disconnected from the Internet, users on the LAN can be dynamically assigned IP Addresses by the Cable Modem DHCP Server. These addresses are assigned from an address pool which begins with 192.168.100.11 and ends with 192.168.100.42. Statically assigned IP addresses for other devices on the LAN should be chosen from outside of this range

Note:
Resetting the cable modem to its factory default configuration will remove all stored parameters learned by the cable modem during prior initializations. The process to get back online from a factory default condition could take from 5 to 30 minutes. Please reference the cable modem User Guide for details on the power up sequence.

Help Page
Software Version: SB4100-0.4.9.6-SCM01-NOSH
Hardware Version: 0
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.3

Will PM the address page if needed mate. Nowt on there about downloads uploads. just macs and ips

Cheers

Matt

[opelfruitcase]

Originally Posted by DragonRebornUK

Status Page
<snip>

Can't see where it mentions about the modulation here. I'm looking to see if QAM256 is causing this modem to barf now and again - maybe someone else with a SB3100 or SB4100 can help out here? I can't be arsed to go up the attic to dig out my SB3100 to compare details with.

However, looking at other threads there's a good possibility of it being a ubr issue - in fact i'm guessing the issue is more related to that than anything else.