[Solved] Constant extremely high ping
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[Solved] Constant extremely high ping
18-06-2010 7:57 AM
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During testing I connected to various plusnet gateways, and the problem remains. I've also swapped routers which has made no difference.
What could possibly cause this? Is anyone else experiencing this problem?
Re: Constant extremely high ping
18-06-2010 9:02 AM
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Re: Constant extremely high ping
18-06-2010 11:15 AM
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ping -n 30 ntp.plus.net
Do you have a wired or wireless connection to the router?
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) |
Re: Constant extremely high ping
18-06-2010 2:28 PM
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(mtr to news.bbc.co.uk from a box wired to the modem)
Host Loss% Snt Last Avg Best Wrst StDev
1. 192.168.0.1 0.0% 288 0.7 0.8 0.5 3.7 0.4
2. lo0-central1.pcl-ag02.plus.net 0.3% 288 101.2 122.3 47.1 546.8 32.1
3. gi1-13-211.pcl-gw01.plus.net 0.3% 288 100.6 134.8 53.3 495.3 57.6
4. te2-1.pcl-gw02.plus.net 0.7% 287 105.5 130.6 49.7 554.4 51.5
5. te2-2.thn-gw2.plus.net 0.7% 287 105.9 127.2 53.0 442.7 45.3
6. rt0.thdo.bbc.co.uk 0.0% 287 104.3 124.0 60.8 332.1 33.7
7. 212.58.238.149 0.3% 287 113.7 123.9 41.8 556.2 39.9
8. te12-1.hsw1.cwwtf.bbc.co.uk 0.0% 287 107.8 118.7 45.2 444.5 25.0
9. nol-vip03.cwwtf.bbc.co.uk 0.3% 287 109.4 118.2 46.4 337.2 20.6
EDIT: just noticed that OP is getting low pings when he first connects, I'm on high pings all the time despite reconnecting and resetting the modem a couple of times. I've also had the same results using the modem's built-in ping function, and on a couple of other computers.
Re: Constant extremely high ping
18-06-2010 2:56 PM
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I've just been having a look at that for you. There's a few things to take into account. It seems that there may be latency issues during the world cup, as per... http://status.aaisp.net.uk/?incident=284
From your results I have seen you're connecting through pcl-ag02 and yesterday we lost 2 pipes and part of pcl-ag02 so this may have caused some congestion when the others had to cope with all the traffic. If you reconnect your router and try to get to a different gateway I'd be interested to see the results then. Instead of having to do a traceroute to see what gateway you are connected to you can use this tool http://usertools.plus.net/@gateway
Hope that helps
Jojo
Re: Constant extremely high ping
18-06-2010 7:21 PM
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I am wired to the router. We've a number of devices around the house, a few Windows 7 machines, 2 X-Boxes and a Mac. I've disabled wireless and had only my computer attached to the router, but it makes no difference.
Here is my ping (to ntp.plus.net) after a router reset:
64 bytes from 212.159.13.49: icmp_seq=25 ttl=251 time=30.965 ms
64 bytes from 212.159.13.49: icmp_seq=26 ttl=251 time=31.075 ms
64 bytes from 212.159.13.49: icmp_seq=27 ttl=251 time=30.447 ms
64 bytes from 212.159.13.49: icmp_seq=28 ttl=251 time=32.258 ms
64 bytes from 212.159.13.49: icmp_seq=29 ttl=251 time=31.047 ms
64 bytes from 212.159.13.49: icmp_seq=30 ttl=251 time=49.774 ms
64 bytes from 212.159.13.49: icmp_seq=31 ttl=251 time=30.174 ms
64 bytes from 212.159.13.49: icmp_seq=32 ttl=251 time=31.490 ms
64 bytes from 212.159.13.49: icmp_seq=33 ttl=251 time=30.573 ms
64 bytes from 212.159.13.49: icmp_seq=34 ttl=251 time=31.305 ms
64 bytes from 212.159.13.49: icmp_seq=35 ttl=251 time=42.684 ms
Request timeout for icmp_seq 36
64 bytes from 212.159.13.49: icmp_seq=37 ttl=251 time=760.160 ms
Request timeout for icmp_seq 38
64 bytes from 212.159.13.49: icmp_seq=39 ttl=251 time=160.725 ms
64 bytes from 212.159.13.49: icmp_seq=40 ttl=251 time=156.788 ms
64 bytes from 212.159.13.49: icmp_seq=41 ttl=251 time=233.254 ms
64 bytes from 212.159.13.49: icmp_seq=42 ttl=251 time=296.891 ms
64 bytes from 212.159.13.49: icmp_seq=43 ttl=251 time=385.146 ms
64 bytes from 212.159.13.49: icmp_seq=44 ttl=251 time=411.264 ms
64 bytes from 212.159.13.49: icmp_seq=45 ttl=251 time=458.889 ms
64 bytes from 212.159.13.49: icmp_seq=46 ttl=251 time=484.793 ms
64 bytes from 212.159.13.49: icmp_seq=47 ttl=251 time=598.194 ms
64 bytes from 212.159.13.49: icmp_seq=48 ttl=251 time=582.979 ms
64 bytes from 212.159.13.49: icmp_seq=49 ttl=251 time=584.284 ms
64 bytes from 212.159.13.49: icmp_seq=50 ttl=251 time=650.386 ms
64 bytes from 212.159.13.49: icmp_seq=51 ttl=251 time=657.832 ms
64 bytes from 212.159.13.49: icmp_seq=52 ttl=251 time=682.315 ms
64 bytes from 212.159.13.49: icmp_seq=53 ttl=251 time=730.021 ms
64 bytes from 212.159.13.49: icmp_seq=54 ttl=251 time=736.140 ms
And then it stays around this value.
I've tried experimenting with various MTU sizes and it makes no noticeable difference.
I logged a support call yesterday, but as yet, I've heard nothing back.
Any help would be much appreciated.
Re: [Solved] Constant extremely high ping
18-06-2010 7:45 PM
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Thanks for your help,
Right, now to download Mozilla Thunderbird...
Re: [Solved] Constant extremely high ping
19-06-2010 1:12 PM
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Only flaw is that the frequent reconnections are going to hamper my efforts to persuade the DLM to get me back to 6dB SNRM...
Re: [Solved] Constant extremely high ping
21-06-2010 10:17 AM
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That's very interesting, I shall keep a look out for other instances.
@newlay,
Looks like it was the gateway after all.
Jojo
Re: [Solved] Constant extremely high ping
21-06-2010 1:09 PM
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Pings seem to be back up. I was connected to pcl-ag02 so reconnected and hit pcl-ag04. They're still high. Are there still problems at the gateway end?
thanks
Re: [Solved] Constant extremely high ping
21-06-2010 1:22 PM
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I have just moved over to adsl2+ and when I re-sync my router my pings go nuts (around 200-300 ms). If left connected overnight they then come back down to normal 20ms odd. No idea why this happens but it does.
Re: [Solved] Constant extremely high ping
21-06-2010 3:04 PM
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We don't have any current issues with the gateways. I suggest you raise a fault ticket if you continue to experience these high ping times.
Jojo
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