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Old 22-10-2009, 12:45   #1
handoff2000
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Trace route interpretation
Hi iv been contacting Vm support about speed issues. I’m on a 20 Meg line and only receive about 1.7 Mbps in non peak about 0.5 Mbps during peak (according to 3 different servers on speedtest.net, downloading from the games.virginmedia site wouldn’t settle but gave me around 35 Kb/sec. This is from behind a router but connected directly to the modem gives similar results.

Anyway i sent Customer Support this trace route. (performed well directly connected to the modem)

Quote:
Tracing route to bbc.co.uk [212.58.224.138] over a maximum of 30 hops:

1 40 ms 41 ms 84 ms 10.187.0.1
2 62 ms 45 ms 53 ms 80.235.128.36
3 85 ms 140 ms 95 ms 195.188.231.21
4 71 ms 74 ms 94 ms win-bb-b-ge-220-0.network.virginmedia.net [195.1
82.178.133]
5 65 ms 78 ms 84 ms win-bb-a-ae0-0.network.virginmedia.net [213.105.
172.161]
6 67 ms 71 ms 73 ms gfd-bb-b-so-100-0.network.virginmedia.net [213.1
05.172.130]
7 77 ms 83 ms 93 ms redb-ic-1-as0-0.network.virginmedia.net [62.253.
185.78]
8 93 ms 100 ms 89 ms 212.58.239.249
9 79 ms 80 ms 82 ms 212.58.238.149
10 75 ms 100 ms 86 ms virtual-vip.thdo.bbc.co.uk [212.58.224.138]

Trace complete.
They replied a few days later saying

"Thank you for the trace route, it shows it taking a long time for
Information to leave your computer and get to the modem. " and asked me to perform a netstat.

However I am sceptical, I don’t think it does show that at all and they are just trying to pin the blame at my end. I have tried with 9 different computers all show the line to deliver extremely slow speeds.
I am convinced the slow speeds are due to over utilization of Vm's local network and posts on the news groups have confirmed this.

So in short please can someone give me a second option on what the trace route shows. many thanks

Ps. Sorry for such a long winded post I but all the background is there if you need it.
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Old 22-10-2009, 12:57   #2
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Re: Trace route interpretation
Hi there I'd probably suggest you use winmtr ( http://winmtr.sourceforge.net/ ) to see if there is packet loss on the hop from you modem to the UBR - could be a transmission problem ie. damaged cabling / splitters / f connectors

or the hop from your PC to the modem - faulty ethernet port or cable / faulty modem
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Old 22-10-2009, 12:58   #3
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Re: Trace route interpretation
Quote:
Originally Posted by handoff2000 View Post
Hi iv been contacting Vm support about speed issues. I’m on a 20 Meg line and only receive about 1.7 Mbps in non peak about 0.5 Mbps during peak (according to 3 different servers on speedtest.net, downloading from the games.virginmedia site wouldn’t settle but gave me around 35 Kb/sec. This is from behind a router but connected directly to the modem gives similar results.

Anyway i sent Customer Support this trace route. (performed well directly connected to the modem)



They replied a few days later saying

"Thank you for the trace route, it shows it taking a long time for
Information to leave your computer and get to the modem. " and asked me to perform a netstat.

However I am sceptical, I don’t think it does show that at all and they are just trying to pin the blame at my end. I have tried with 9 different computers all show the line to deliver extremely slow speeds.
I am convinced the slow speeds are due to over utilization of Vm's local network and posts on the news groups have confirmed this.

So in short please can someone give me a second option on what the trace route shows. many thanks

Ps. Sorry for such a long winded post I but all the background is there if you need it.
Next step power levels please:

192.168.100.1 - root / root is the login - can you post power levels for up and downstream. Don't post your MAC address.

Can you provide a ping aswell please. Preferably connected directly.

A netstat would help Windows key + R - cmd type netstat -a again past the results.
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Old 22-10-2009, 13:23   #4
handoff2000
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Re: Trace route interpretation
Thanks guys i think there is a splitter somewhere as there is a vm point in the lounge for the tv and the one which where using for broadband on the 1st floor.I have spoken to the previous tennents of the house who said they got ok speeds from virgin.

Power levels
Downstream Channel Id : 0
Downstream Frequency : 331000000 Hz
Downstream Receive Power Level : -7.5 dBmV
Downstream SNR : 37.4 dB

Upstream Channel ID : 1
Upstream Frequency : 18800000 Hz
Upstream transmit Power Level : 52.5 dBmV

I though they looked ok but i know very little on this subject. is that all the ones you needed ?

Net stat

C:\Documents and Settings\Jonny>netstat -a

Active Connections

Proto Local Address Foreign Address State
TCP lil-beast:http lil-beast:0 LISTENING
TCP lil-beast:epmap lil-beast:0 LISTENING
TCP lil-beast:https lil-beast:0 LISTENING
TCP lil-beast:microsoft-ds lil-beast:0 LISTENING
TCP lil-beast:60088 lil-beast:0 LISTENING
TCP lil-beast:1025 lil-beast:0 LISTENING
TCP lil-beast:1047 localhost:1046 TIME_WAIT
TCP lil-beast:netbios-ssn lil-beast:0 LISTENING
TCP lil-beast:1031 92-239-175-74.cable.ubr17.brad.blueyonder.co.uk:
25555 ESTABLISHED
TCP lil-beast:1044 192.168.1.6:64018 ESTABLISHED
TCP lil-beast:1154 exeter.blackboard.com:http TIME_WAIT
UDP lil-beast:https *:*
UDP lil-beast:microsoft-ds *:*
UDP lil-beast:isakmp *:*
UDP lil-beast:4500 *:*
UDP lil-beast:60088 *:*
UDP lil-beast:ntp *:*
UDP lil-beast:1029 *:*
UDP lil-beast:1900 *:*
UDP lil-beast:ntp *:*
UDP lil-beast:netbios-ns *:*
UDP lil-beast:netbios-dgm *:*
UDP lil-beast:1900 *:*

Ping

C:\Documents and Settings\Jonny>ping virginmedia.com

Pinging virginmedia.com [212.250.162.12] with 32 bytes of data:

Reply from 212.250.162.12: bytes=32 time=319ms TTL=120
Reply from 212.250.162.12: bytes=32 time=105ms TTL=120
Reply from 212.250.162.12: bytes=32 time=82ms TTL=120
Reply from 212.250.162.12: bytes=32 time=91ms TTL=120

Ping statistics for 212.250.162.12:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 82ms, Maximum = 319ms, Average = 149ms

C:\Documents and Settings\Jonny>ping bbc.co.uk

Pinging bbc.co.uk [212.58.224.138] with 32 bytes of data:

Reply from 212.58.224.138: bytes=32 time=362ms TTL=118
Reply from 212.58.224.138: bytes=32 time=84ms TTL=118
Reply from 212.58.224.138: bytes=32 time=75ms TTL=118
Reply from 212.58.224.138: bytes=32 time=79ms TTL=118

Ping statistics for 212.58.224.138:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 75ms, Maximum = 362ms, Average = 150ms

Pings were performed behind a router but i can do it directly connected in a minute
Thanks again for your help.
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Old 22-10-2009, 13:33   #5
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Re: Trace route interpretation
Downstream power level is too low - should be between - 3 and 3.

Ping is high, likely because of this. You will need a tech to come and adjust the levels.
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Old 22-10-2009, 13:50   #6
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Re: Trace route interpretation
really? im on an ex telewest line i though between -12 to +12 was ok for them or does that refer to something else?
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Old 22-10-2009, 13:55   #7
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Re: Trace route interpretation
- 6 and +15 either way. It's too low
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Old 22-10-2009, 14:05   #8
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Re: Trace route interpretation
Which modem do you have? Your ping times are high and your traceroute has higher ping times than it should have getting to the modem.


C:\Documents and Settings\Mags>tracert bbc.co.uk

Tracing route to bbc.co.uk [212.58.224.138]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms 192.168.1.1
2 8 ms 26 ms 7 ms 192.168.1.1
3 18 ms 13 ms 18 ms osr01uddi-ge39.network.virginmedia.net [80.3.17.
1]
4 20 ms 7 ms 24 ms uddi-core-1a-ge-010-0.network.virginmedia.net [8
0.3.16.69]
5 32 ms 25 ms 13 ms lee-bb-a-so-302-0.network.virginmedia.net [213.1
05.175.189]
6 23 ms 24 ms 22 ms nth-bb-b-as2-0.network.virginmedia.net [62.253.1
85.101]
7 34 ms 23 ms 24 ms tele-ic-1-as0-0.network.virginmedia.net [62.253.
184.2]
8 22 ms 27 ms 20 ms pos6-1.rt0.thdo.bbc.co.uk [212.58.239.237]
9 35 ms 32 ms 26 ms 212.58.238.129
10 25 ms 38 ms 33 ms virtual-vip.thdo.bbc.co.uk [212.58.224.138]

Trace complete.

My trace was done while downloading at 1958KB/s and the times are still better than yours, I'd be looking at the modem itself or cabling.
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Old 22-10-2009, 14:41   #9
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Re: Trace route interpretation
Quote:
Originally Posted by handoff2000 View Post
really? im on an ex telewest line i though between -12 to +12 was ok for them or does that refer to something else?
General rule of thumb for the whole network is +/- 5dBmV. Upstream is reaching a high level as well, so watch that. Mention it to the tech.
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