Diagnosing Performance

[madbill]

Hi all,

Had virgin installed last week - 20meg. At first performance was OK but it has gone downhill since. I was OK diagnosing ADSL connection probs, but cable modem :dozey:

Connected directly to modem, or via router I get the same problem (up to 2Mb, not up to 20Mb)

Can anything be derived from the following?:

Stats:
Downstream Lock : Locked
Downstream Channel Id : 5
Downstream Frequency : 339000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 8.6 dBmV
Downstream SNR : 36.7 dB

Modem Log:
Sat Apr 04 08:33:26 2009 Sat Apr 04 08:33:26 2009 Information (7) New UCD in effect
Sat Apr 04 08:28:04 2009 Sat Apr 04 08:28:04 2009 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Sat Apr 04 08:27:04 2009 Sat Apr 04 08:27:04 2009 Information (7) New UCD in effect
Sat Apr 04 08:22:50 2009 Sat Apr 04 08:22:50 2009 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Sat Apr 04 08:19:09 2009 Sat Apr 04 08:19:09 2009 Information (7) New UCD in effect
Sat Apr 04 08:15:12 2009 Sat Apr 04 08:15:12 2009 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Sat Apr 04 08:12:26 2009 Sat Apr 04 08:12:26 2009 Information (7) New UCD in effect
Sat Apr 04 08:07:58 2009 Sat Apr 04 08:07:58 2009 Critical (3) Started Unicast Maintenance Ranging - No Response received -


Ta

[chickendippers]

You'll also need to post your upstream levels.

[madbill]

You'll also need to post your upstream levels.

Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 22200000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 45.0 dBmV
Upstream Mini-Slot Size : 2

Ta

[Steve Day]

your figures seem ok.

however, if u are still having aggro, can i advise you to maybe post on the virginmedia newsgroups.

the virgin news server is:

news.virginmedia.com

and the newsgroup u want is:

virginmedia.support.broadband.cable

the tech support guys on there are very helpful, work until 9-10pm and can check your UBR usage, connection etc remotely and will even book you a tech visit if necessary to save the exasperating conversations with overseas tech support.

i do hope u are familiar with using newsgroups :)

Steve

[madbill]

your figures seem ok.

however, if u are still having aggro, can i advise you to maybe post on the virginmedia newsgroups.

Steve

Ta - will maybe give them a try - tier two suspects an "amp" problem as the replacement router fixed nothing (as I suspected)...

darth@vadar:~$ mtr -c 100 -r news.bbc.co.uk
HOST: vadar Loss% Snt Last Avg Best Wrst StDev
1. 192.168.1.1 0.0% 100 1.1 1.9 1.0 39.5 4.7
2. 10.249.192.1 90.0% 100 8.4 11.0 8.0 14.2 2.4
3. osr02edin-v15.network.virgin 90.0% 100 13.1 13.3 10.2 28.5 5.5
4. lee-bb-b-ae1-0.network.virgi 90.0% 100 13.1 16.0 13.1 28.1 4.3
5. lee-bb-a-ae0-0.network.virgi 90.0% 100 17.9 15.1 12.8 17.9 1.4
6. nth-bb-b-as2-0.network.virgi 90.0% 100 28.7 22.6 17.9 32.4 4.6
7. tele-ic-1-as0-0.network.virg 90.0% 100 24.0 21.9 19.5 24.0 1.4
8. pos6-1.rt0.thdo.bbc.co.uk 91.0% 100 19.9 22.8 19.9 32.8 3.9
9. 212.58.238.153 90.0% 100 21.9 22.8 20.7 26.1 1.7
10. te12-1.hsw1.cwwtf.bbc.co.uk 90.0% 100 24.7 22.6 21.0 24.7 0.9
11. nol-vip03.cwwtf.bbc.co.uk 91.0% 100 21.9 22.4 21.7 24.3 0.8