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High latency and UDP drops
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- Re: High latency and UDP drops
High latency and UDP drops
30-11-2009 7:23 PM
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Over the last few days I have been experiencing high levels of dropping of udp packets (and quite probably tcp as well) which makes DNS resolution when web browsing a matter of chance, together very high latencies. I assume the two problems are linked.
Just at the moment the service is now practically unusable.
I cannot be the only one experiencing this. Is anything being done about it?
Chris
Just at the moment the service is now practically unusable.
I cannot be the only one experiencing this. Is anything being done about it?
Chris
Message 1 of 7
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6 REPLIES 6
Re: High latency and UDP drops
30-11-2009 7:25 PM
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can you run some traceroutes please to give us an idea where the packetloss is happening?
Message 2 of 7
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Re: High latency and UDP drops
30-11-2009 7:38 PM
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traceroute to 212.159.6.9 (212.159.6.9), 30 hops max, 38 byte packets
1 192.168.2.1 (192.168.2.1) 3.991 ms 4.205 ms 2.231 ms
2 195.166.128.27 (195.166.128.27) 29.246 ms 35.452 ms 114.764 ms
3 gi1-2-803.pcl-gw1.plus.net (84.92.5.57) 31.542 ms 40.555 ms 79.121 ms
4 * * *
5 * * *
6 * * *
traceroute to bbc.co.uk (212.58.224.138), 30 hops max, 38 byte packets
1 192.168.2.1 (192.168.2.1) 2.193 ms 2.104 ms 1.822 ms
2 lo0-plusnet.pcl-ag01.plus.net (195.166.128.27) 61.040 ms 62.020 ms 35.056 ms
3 gi1-2-803.pcl-gw1.plus.net (84.92.5.57) 90.677 ms 29.512 ms 31.808 ms
4 te2-1.pcl-gw02.plus.net (212.159.1.114) 30.581 ms 35.414 ms 30.395 ms
5 te2-2.thn-gw2.plus.net (212.159.0.190) 66.658 ms 133.434 ms 37.876 ms
6 rt0.thdo.bbc.co.uk (212.58.239.25) 30.922 ms 29.103 ms 29.047 ms
7 212.58.238.149 (212.58.238.149) 53.931 ms 27.879 ms 33.138 ms
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
traceroute to portal.plus.net (212.159.9.2), 30 hops max, 38 byte packets
1 192.168.2.1 (192.168.2.1) 2.204 ms 3.073 ms 2.036 ms
2 lo0-plusnet.pcl-ag01.plus.net (195.166.128.27) 41.605 ms 29.202 ms 47.028 ms
3 gi1-2-803.pcl-gw1.plus.net (84.92.5.57) 30.842 ms 38.075 ms 36.708 ms
4 gi5-8.ptp-cr01.plus.net (84.93.224.48) 34.012 ms 66.086 ms 78.659 ms
5 vlan2658.ptp-elb02.plus.net (84.93.224.45) 38.621 ms 59.330 ms 35.946 ms
6 vlan2658.ptp-elb02.plus.net (84.93.224.45) 43.539 ms 48.441 ms 41.175 ms
1 192.168.2.1 (192.168.2.1) 3.991 ms 4.205 ms 2.231 ms
2 195.166.128.27 (195.166.128.27) 29.246 ms 35.452 ms 114.764 ms
3 gi1-2-803.pcl-gw1.plus.net (84.92.5.57) 31.542 ms 40.555 ms 79.121 ms
4 * * *
5 * * *
6 * * *
traceroute to bbc.co.uk (212.58.224.138), 30 hops max, 38 byte packets
1 192.168.2.1 (192.168.2.1) 2.193 ms 2.104 ms 1.822 ms
2 lo0-plusnet.pcl-ag01.plus.net (195.166.128.27) 61.040 ms 62.020 ms 35.056 ms
3 gi1-2-803.pcl-gw1.plus.net (84.92.5.57) 90.677 ms 29.512 ms 31.808 ms
4 te2-1.pcl-gw02.plus.net (212.159.1.114) 30.581 ms 35.414 ms 30.395 ms
5 te2-2.thn-gw2.plus.net (212.159.0.190) 66.658 ms 133.434 ms 37.876 ms
6 rt0.thdo.bbc.co.uk (212.58.239.25) 30.922 ms 29.103 ms 29.047 ms
7 212.58.238.149 (212.58.238.149) 53.931 ms 27.879 ms 33.138 ms
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
traceroute to portal.plus.net (212.159.9.2), 30 hops max, 38 byte packets
1 192.168.2.1 (192.168.2.1) 2.204 ms 3.073 ms 2.036 ms
2 lo0-plusnet.pcl-ag01.plus.net (195.166.128.27) 41.605 ms 29.202 ms 47.028 ms
3 gi1-2-803.pcl-gw1.plus.net (84.92.5.57) 30.842 ms 38.075 ms 36.708 ms
4 gi5-8.ptp-cr01.plus.net (84.93.224.48) 34.012 ms 66.086 ms 78.659 ms
5 vlan2658.ptp-elb02.plus.net (84.93.224.45) 38.621 ms 59.330 ms 35.946 ms
6 vlan2658.ptp-elb02.plus.net (84.93.224.45) 43.539 ms 48.441 ms 41.175 ms
Message 3 of 7
(658 Views)
Re: High latency and UDP drops
30-11-2009 7:47 PM
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And the secondary DNS server is just as bad:
traceroute to 212.159.6.10 (212.159.6.10), 30 hops max, 38 byte packets
1 192.168.2.1 (192.168.2.1) 3.253 ms 4.074 ms 2.065 ms
2 195.166.128.27 (195.166.128.27) 37.210 ms 61.384 ms 82.819 ms
3 84.92.5.57 (84.92.5.57) 38.821 ms 31.149 ms 35.381 ms
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
traceroute to 212.159.6.10 (212.159.6.10), 30 hops max, 38 byte packets
1 192.168.2.1 (192.168.2.1) 3.253 ms 4.074 ms 2.065 ms
2 195.166.128.27 (195.166.128.27) 37.210 ms 61.384 ms 82.819 ms
3 84.92.5.57 (84.92.5.57) 38.821 ms 31.149 ms 35.381 ms
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
Message 4 of 7
(658 Views)
Re: High latency and UDP drops
04-12-2009 8:18 AM
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I'm surprised Bob hasn't spotted this, probably because Feedback isn't the right Board.
Message 5 of 7
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Re: High latency and UDP drops
04-12-2009 9:44 AM
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I managed to resolve the problem by switching off the router and then reconnecting, so as to get a new IP address.
Chris
Chris
Message 6 of 7
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Re: High latency and UDP drops
04-12-2009 9:50 AM
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I don't like the times on some of the first hops to your router - you're on wireless aren't you?
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Message 7 of 7
(658 Views)
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- Re: High latency and UDP drops