cancel
Showing results for 
Search instead for 
Did you mean: 

High latency and UDP drops

cvine
Newbie
Posts: 4
Registered: ‎30-11-2009

High latency and UDP drops

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
6 REPLIES
scootie
Grafter
Posts: 4,799
Registered: ‎03-11-2007

Re: High latency and UDP drops

can you run some traceroutes please to give us an idea where the packetloss is happening?
cvine
Newbie
Posts: 4
Registered: ‎30-11-2009

Re: High latency and UDP drops

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 (212.58.224.13Cool, 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 (84.93.224.4Cool  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
cvine
Newbie
Posts: 4
Registered: ‎30-11-2009

Re: High latency and UDP drops

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  * * *
Community Veteran
Posts: 19,101
Thanks: 443
Fixes: 21
Registered: ‎31-08-2007

Re: High latency and UDP drops

I'm surprised Bob hasn't spotted this,  probably because Feedback isn't the right Board.
cvine
Newbie
Posts: 4
Registered: ‎30-11-2009

Re: High latency and UDP drops

I managed to resolve the problem by switching off the router and then reconnecting, so as to get a new IP address.
Chris
Community Veteran
Posts: 26,720
Thanks: 934
Fixes: 10
Registered: ‎10-04-2007

Re: High latency and UDP drops

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 (£13/month)
Mobile: iD mobile (£4/month)