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View Full Version : 10-50% Packet loss! :(

alex-weej
09-10-2005, 15:20
Phoned NTL cable modem tech support for the first time in about 2 years expecting to speak to a friendly and knowledgable welsh bloke. It seems there's no more of that. :( The guy says I need to get the account holder to ring up and arrange an engineer. :@

My connection is absolutely battered as of yesterday and it is totally wrecking my throughput. I'm on the 2 Mb service with an Ambit 100 and now lucky to see more than 30 K off anything.

Anyway, the guy on the phone just said call an engineer out but didn't even seem to make any reasonable effort like the old tech support people did, so I had a little investigation myself and managed to find the log page. (Why have they hidden it!? - http://192.168.100.1/P_log.htm for anyone wondering, what a guess!)

Event Log
Index First Time Last Time Counts Level ID Text
1 2000-08-17 22:52:02 2005-10-09 14:19:48 131 error 26 R02.0 No Ranging Response received...
9 2005-09-02 21:16:39 2005-10-09 14:10:24 127 information 114 SNMP Authentification Fail
8 2005-09-02 20:29:04 2005-10-09 13:45:04 3 information 113 Link Up
13 2005-10-09 13:45:03 2005-10-09 13:45:03 1 information 112 Link Down
3 2005-08-29 06:59:38 2005-10-09 13:41:15 6 notice 95 E101.0 TFTP cmreg-ntlhm100-mid.cm...
4 2005-08-29 06:59:38 2005-10-09 13:41:15 6 notice 94 TFTP success (3680 bytes)
6 2005-09-02 20:28:32 2005-10-09 13:41:15 3 information 110 Cold Start
7 2005-09-02 20:28:32 2005-10-09 13:41:15 3 notice 126 Registration OK
2 2000-08-17 22:52:03 2005-10-08 18:16:56 6 notice 125 SNMP Event: SNMP agent Start.
12 2005-09-08 02:21:47 2005-09-08 02:21:47 1 information 80 D04.1 Time of Day Request...
5 2005-08-29 06:59:38 2005-09-08 02:21:26 3 information 111 Warm Start
11 2005-09-08 02:12:35 2005-09-08 02:20:36 2 notice 123 Reset
10 2005-09-08 02:12:23 2005-09-08 02:20:23 3 information 2 T02.0 Failed to acquire FEC...

Notice the errors at the top. A new one is added every 10 seconds pretty much. Any ideas?

Downstream SNR : 21.02 dB
Upstream Transmit Power Level : 61.00 dBmv

Cheers
Graham M
09-10-2005, 16:37
Those values seem a bit off to me, someone a bit more knowledgable will be along soon im sure.
Chris W
09-10-2005, 22:11
<snip>

From the look of that there was no need for Tech Support to do any other diagnostics. Connection is fubared, so yep an engineer is needed. I guess the person you spoke to could have gone through loads of other irrelvant diagnostics with you, but the results that he would have seen from the tests on the modem show quite clearly that an engineer is needed!

Don't understand this forum.... people moan that tech support spend too much time investigating pc issues and not sending engineers, and people moan that it's decided an engineer is needed to quickly

/mutters crazy things to himself and then goes back to sit in his corner.
Chrysalis
09-10-2005, 23:10
thanks for the url nice to see a log, mine has the snmp error also I would ignore that, it might be something to do with the new firmware blocking snmp now.

I got this error with 35 counts, first occurance 17 aug 2000 (i wasnt on ntl then O_O) and last occurance 9 oct 2005

R02.0 No Ranging Response received, T3 time-out
Ignition
09-10-2005, 23:15
Downstream SNR sucks the botty, upstream transmit is maxing out. Those of you who've been here a while shame on you, I did a thread on acceptable power levels and this chap is well outside them! :p:

This link is heavily attenuated, at a guess no noise just attenuation making the wanted signals too weak, needs an engineer to come and check it out.

Tech support were spot on. Can't complain about this, they could have made you go through a load of scripted PC checks but didn't :p:
Chrysalis
10-10-2005, 17:14
Ignition I dont upload much, but dont know if you was reffering to my error or not. I also have upload capped via netlimiter so if I have to upload anything my capacity isnt maxed so my ssh sessions dont lag.
Ignition
10-10-2005, 20:13
Ignition I dont upload much, but dont know if you was reffering to my error or not. I also have upload capped via netlimiter so if I have to upload anything my capacity isnt maxed so my ssh sessions dont lag.

By upstream transmit I was referring to OP's 61dBmV transmit power on his modem.
potz
13-10-2005, 22:17
Phoned NTL cable modem tech support for the first time in about 2 years expecting to speak to a friendly and knowledgable welsh bloke. It seems there's no more of that. :( The guy says I need to get the account holder to ring up and arrange an engineer. :@

My connection is absolutely battered as of yesterday and it is totally wrecking my throughput. I'm on the 2 Mb service with an Ambit 100 and now lucky to see more than 30 K off anything.

Anyway, the guy on the phone just said call an engineer out but didn't even seem to make any reasonable effort like the old tech support people did, so I had a little investigation myself and managed to find the log page. (Why have they hidden it!? - http://192.168.100.1/P_log.htm for anyone wondering, what a guess!)

Event Log
Index First Time Last Time Counts Level ID Text
1 2000-08-17 22:52:02 2005-10-09 14:19:48 131 error 26 R02.0 No Ranging Response received...
9 2005-09-02 21:16:39 2005-10-09 14:10:24 127 information 114 SNMP Authentification Fail
8 2005-09-02 20:29:04 2005-10-09 13:45:04 3 information 113 Link Up
13 2005-10-09 13:45:03 2005-10-09 13:45:03 1 information 112 Link Down
3 2005-08-29 06:59:38 2005-10-09 13:41:15 6 notice 95 E101.0 TFTP cmreg-ntlhm100-mid.cm...
4 2005-08-29 06:59:38 2005-10-09 13:41:15 6 notice 94 TFTP success (3680 bytes)
6 2005-09-02 20:28:32 2005-10-09 13:41:15 3 information 110 Cold Start
7 2005-09-02 20:28:32 2005-10-09 13:41:15 3 notice 126 Registration OK
2 2000-08-17 22:52:03 2005-10-08 18:16:56 6 notice 125 SNMP Event: SNMP agent Start.
12 2005-09-08 02:21:47 2005-09-08 02:21:47 1 information 80 D04.1 Time of Day Request...
5 2005-08-29 06:59:38 2005-09-08 02:21:26 3 information 111 Warm Start
11 2005-09-08 02:12:35 2005-09-08 02:20:36 2 notice 123 Reset
10 2005-09-08 02:12:23 2005-09-08 02:20:23 3 information 2 T02.0 Failed to acquire FEC...

Notice the errors at the top. A new one is added every 10 seconds pretty much. Any ideas?

Downstream SNR : 21.02 dB
Upstream Transmit Power Level : 61.00 dBmv

Cheers

http://192.168.100.1/P_log.htm

dont work for meh ? :> or is only if ya on cable modem and not a stb ?
Chris W
13-10-2005, 22:23
yup... only works on cable modem i'm afraid!