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This is a sub-selection from Massive Slowdowns?

Powell, WY

1 edit
reply to bigburd

Re: Massive Slowdowns?

Here we go again. Attached is a speedtest to Bresnan's Billings speedtest server, followed by a traceroute and a capture of my modem's stats at that time. Has been this way for a few hours. When I contacted support about my modem and several of my friend's modems in the area losing block sync at the exact same time they claimed it was because my line had a lot of noise on it and they 'weren't surprised I am having problems', however there is/was never any evidence of noise as far as I could tell. If they were looking at the US SNR most CMTS' as far as I know report the aggregate channel SNR/CNR and not a particular modem/connection. When I lose block sync, it changes frequencies between 111MHz DS, 23MHz US and 117MHz DS, 30.6MHz US, usually like clockwork between 00:30 and 01:30. Also at one time the config naming scheme that the CMTS offered changed, but again, according to Bresnan it is just me and I guess the rest is completely and 100% my modem controlling their CMTS. Cool, now where is the button to uncap my line again as it seems my modem is in complete control of the Butte network. /sarcasm


Sun Nov 14 21:45:41 MST 2010
traceroute to billings.speedtest.bresnan.net (, 30 hops max, 38 byte packets
1 ( 145.996 ms 107.238 ms 103.868 ms
2 butmtfh1hb6-GE-0-0-0-U96.int.bresnan.net ( 101.263 ms 97.026 ms 103.900 ms
3 * blnmtfh2cr5-GE-3-0-9-U0.int.bresnan.net ( 124.420 ms *
4 blnmtfh1hb7-GE-0-0-2-U0.int.bresnan.net ( 134.600 ms 136.884 ms 120.147 ms
5 blnmtfh1svspd.int.bresnan.net ( 108.584 ms 117.218 ms 114.433 ms

11/14/2010 9:45:44 PM
SNR: '38'
USPwr: '45'
USFreq: '23000000'
USChan: '2'
DSPwr: '1'
DSFreq: '111000000'
DSMod: 'QAM256'


Bozeman, MT
You're not the only one koolkid. Bozeman's having the same problems at the moment.

My modem goes down about once every 30 minutes for 10 seconds at a time. Reconnects back to the network and works again.

Pings are bouncy... very bouncy. Ranging from 100-800ms within seconds. Download / upload speeds on Sunday were 1.2mb/s down and 0.2mb/s up.

The Bresnan tech support said this is related to an upgrade they did last week. Their engineers are working on the problem, but they didn't have an ETA on the fix. Quite honestly, Bresnan was working better than normal for the past 4-5 months. Now we're back at square 1 again.

If it's still happening by Tuesday night, I'll be calling and asking for a refund for the month.

I Void Warranties

Billings, MT
ralph1 ~ # traceroute
traceroute to (, 30 hops max, 60 byte packets
1 host-10-31-212-1.bln-mt.client.bresnan.net ( 9.151 ms 9.140 ms 9.167 ms
2 host-72-175-111-67.bln-mt.client.bresnan.net ( 9.143 ms 9.112 ms 9.161 ms
3 blnmtaT1cr5-XE-4-0-0-U0.int.bresnan.net ( 8.959 ms 8.975 ms 8.937 ms
4 cspwy002cr5-XE-5-1-0-U0.int.bresnan.net ( 18.759 ms 18.760 ms 18.723 ms
5 cspwy001cr5-XE-5-0-0-U0.int.bresnan.net ( 18.694 ms 18.686 ms 18.712 ms
6 chywyaT1cr5-XE-5-3-0-U0.int.bresnan.net ( 22.741 ms 18.177 ms 17.738 ms
7 chywy001cr5-XE-5-1-0-U0.int.bresnan.net ( 22.349 ms 22.092 ms 22.024 ms
8 dencofh1tr5-XE-5-3-0-U0.int.bresnan.net ( 24.324 ms 24.338 ms 24.304 ms
9 te-9-3.car1.Denver1.Level3.net ( 24.907 ms 24.901 ms 24.919 ms
10 ae-31-55.ebr1.Denver1.Level3.net ( 24.894 ms 24.944 ms 24.860 ms
11 ae-2-2.ebr2.Dallas1.Level3.net ( 43.727 ms 34.366 ms 49.680 ms
12 ae-41-90.car1.Dallas1.Level3.net ( 39.236 ms ae-31-80.car1.Dallas1.Level3.net ( 34.603 ms ae-21-70.car1.Dallas1.Level3.net ( 39.137 ms
13 vnsc-bak.sys.gtei.net ( 38.822 ms 36.671 ms 39.896 ms
Everything's fine here. I know my SSH server on my router has been getting nailed lately. Anyone else finding this in their logs?
Bresnan 18M/1M
MyWS[E5200@3.75GHz,4GB RAM,2x1TB HDDs,Win7]
WifeWS[A64@2GHz,2GB RAM,120GB HDD,Win7]
Router[2xP3@1GHz,512MB RAM,18GB HDD,SMC 8432BTA,2xDigital DE504,Compaq NC3131,Intel Pro/1000MT,IBM Gigabit Ethernet-SX,Allied Telesyn AT2560FX,Gentoo Linux]


Bozeman, MT
The large problems have went away. I'm still dealing with internet disconnects once every 30 minutes for 10-15 seconds each. The modem itself has the logs associated with it. Not sure if this is something on only my end, or on Bresnan's end.

Powell, WY
When the modem reboots or reconnects does it change frequencies/channels?


Bozeman, MT
2010-11-29 01:49:06 3-Critical D003.0 DHCP FAILED - Requested Info not supported.
2010-11-29 01:48:57 3-Critical R002.0 No Ranging Response received - T3 time-out (US 3)

That is the error i get. I'll have to to try and view the frequency / channel next time I see it go. Can a DD-WRT firmware from a router cause this?

Powell, WY
Not likely, DHCP failed is probably the modem attempting to renew it's own local 10.x.x.x address, I forget exactly what the T3 timeout is but it isn't on your local side.
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