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Sudden high ping connection, Netduma has something to do with this?


W11cE

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Guest Netduma_Iain

Sorry if this has been mentioned before but plesae make sure the ethernet cable between R1 and the modem is firmly connected. Also can you post the traceroute. Finally how often does it happen?

 

Thanks

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traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
 1  R1.lan (192.168.88.1)  0.330 ms  0.614 ms  0.569 ms
 2  192.168.0.1 (192.168.0.1)  1.002 ms  0.913 ms  0.840 ms
 3  10.235.0.1 (10.235.0.1)  8.646 ms  8.614 ms  8.868 ms
 4  hel5-sr4.dnaip.fi (62.78.106.134)  8.796 ms  8.718 ms  8.654 ms
 5  esp2-tr2.dnaip.fi (62.78.107.114)  10.425 ms  10.353 ms  10.646 ms
 6  hel5-tr3.dnaip.fi (62.78.107.113)  16.504 ms  19.381 ms  19.820 ms
 7  rai1-tr1.dnaip.fi (62.78.107.13)  19.764 ms  19.717 ms  19.639 ms
 8  tuk2-sr1.dnaip.fi (62.78.107.174)  19.013 ms  17.817 ms  17.429 ms
 9  72.14.243.159 (72.14.243.159)  16.933 ms  16.822 ms  16.701 ms
10  64.233.175.208 (64.233.175.208)  17.413 ms 64.233.175.204 (64.233.175.204)  17.278 ms 72.14.239.237 (72.14.239.237)  17.040 ms
11  google-public-dns-a.google.com (8.8.8.8)  16.637 ms  16.541 ms  13.444 ms

And this has happened 23.3, 19.3, 2.2, 18.2 and 17.2. So that makes only 5 times if I count right and there was over month period when this did not happen. So not that often, but it makes connection ureliable.

 

So I quess no new info about this? Case closed?

 

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Guest Netduma_Iain

Are those dates?

No the case is not closed it's my top priority at the moment. At the moment I believe there are 2 possible causes and maybe a 3rd

1) I know it sounds silly but the wires not being firmly connected can cause this
2) broadcast loop, the is a network loop at your home

Can you let me know exactly what equitment is connected to your R1 eg switch, other routers, wifi repeaters, wifi access points, hubs, power plugs, really any network equitment at all

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Yes, those are dates. The order is reversed here.

 

Devices:

R1:

WAN: Thomson TCW770 cable modem.

LAN:

 - TV

 - Chromebox

 - ZyXel GS-105S switch

 - Cable to other room where its connected to D-Link DGS-1008D switch

 

ZyXel GS-105S:

  - EeePC laptop

 

D-Link DGS-1008D:

 - 2x PC

 - Xbox One

 - PS4

 

What is this broadcast loop and what can cause it?

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Guest Netduma_Iain

It basically when you have a loop in your network. Its quite an easy mistake with lots of equipment. When something does a broadcast it just gets in a infinite loop and can take everything down. 

 

I'm looking into it now at the lab, trying to replicate it. 

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Guest Netduma_Iain

W11cE, we are doing research into it can you let me know what modem you use please. I'm 99% sure its a bug with Motorola/Broadcom modems.

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Guest Netduma_Iain

Ok brilliant thanks, will be double checking the modem. Would it be possible to draw your network topology in paint and I'll see if its possible to have a broadcast storm with it. Thanks

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Guest Netduma_Iain

Hi Sean, please start a new thread when you have an issue. 

 

Since I can help you quickly I'll let it fly. Unfortunately there is nothing we can do, the Internet diagnosis is a test of your pure connection with nothing using it. If you like post a new thread with a screenshot of the details page please. I may not respond till for a few hours as its nearly 1am here. 

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This ok?

post-509-0-80552700-1427386837_thumb.jpg

 

This must have something to do with high bandwidth usage. Re-installed steam on my pc yesterday and this happened 2 times while downloading games. It downloaded at max 130Mbps the whole time (before high ping kicked in).

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Guest Netduma_Iain

W11ce that looks normal, bear in mind Wifi  is also part of the network. So you can have a loop using wifi & wire.

 

Basically the issue can either be the 1) modem 2) wire not fitted in properly 3) broadcast storm

 

Lets assume you've done 2, so lets try rule out number 3. Next time it happens can you ping 192.168.88.1 and show me the result. Then do a traceroute to 8.8.8.8 and show me the result. Only do this when you have the high pings.

 

If its the modem we are literally working with the manufacturer to try figure out what the bug is as we speak.

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Yeah, forgot wifi. Only wifi devices are my phone and tablet. Samsung Galaxy S2 and Nexus 7.

 

As requested, few shots from pinging R1:


64 bytes from 192.168.88.1: icmp_req=213 ttl=64 time=0.348 ms
64 bytes from 192.168.88.1: icmp_req=214 ttl=64 time=0.353 ms
64 bytes from 192.168.88.1: icmp_req=215 ttl=64 time=0.351 ms
64 bytes from 192.168.88.1: icmp_req=216 ttl=64 time=0.342 ms
64 bytes from 192.168.88.1: icmp_req=217 ttl=64 time=0.332 ms
64 bytes from 192.168.88.1: icmp_req=218 ttl=64 time=0.351 ms
64 bytes from 192.168.88.1: icmp_req=219 ttl=64 time=0.330 ms

And trace route:


traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
 1  R1.lan (192.168.88.1)  0.312 ms  0.534 ms  0.481 ms
 2  192.168.0.1 (192.168.0.1)  0.533 ms  0.892 ms  0.734 ms
 3  10.235.0.1 (10.235.0.1)  3241.522 ms  3241.533 ms  3241.484 ms
 4  hel5-sr4.dnaip.fi (62.78.106.134)  3672.200 ms  4444.253 ms  4673.081 ms
 5  esp2-tr2.dnaip.fi (62.78.107.114)  4673.216 ms  4673.183 ms *
 6  * hel5-tr3.dnaip.fi (62.78.107.113)  967.836 ms  972.946 ms
 7  rai1-tr1.dnaip.fi (62.78.107.13)  973.332 ms  973.180 ms  973.135 ms
 8  tuk2-sr1.dnaip.fi (62.78.107.174)  972.203 ms  1823.574 ms  1823.115 ms
 9  72.14.243.159 (72.14.243.159)  1823.011 ms  1822.821 ms  1822.583 ms
10  72.14.239.237 (72.14.239.237)  1823.253 ms 72.14.239.243 (72.14.239.243)  1823.146 ms 72.14.2                     39.237 (72.14.239.237)  1823.097 ms
11  google-public-dns-a.google.com (8.8.8.8)  1822.577 ms  1822.870 ms  9023.286 ms

This is pinging to 8.8.8.8 while downloading at max speed.


64 bytes from 8.8.8.8: icmp_req=101 ttl=55 time=215 ms
64 bytes from 8.8.8.8: icmp_req=102 ttl=55 time=199 ms
64 bytes from 8.8.8.8: icmp_req=103 ttl=55 time=306 ms
64 bytes from 8.8.8.8: icmp_req=104 ttl=55 time=220 ms
64 bytes from 8.8.8.8: icmp_req=105 ttl=55 time=282 ms
64 bytes from 8.8.8.8: icmp_req=106 ttl=55 time=215 ms
64 bytes from 8.8.8.8: icmp_req=107 ttl=55 time=151 ms
64 bytes from 8.8.8.8: icmp_req=108 ttl=55 time=4933 ms
64 bytes from 8.8.8.8: icmp_req=109 ttl=55 time=4085 ms
64 bytes from 8.8.8.8: icmp_req=110 ttl=55 time=3264 ms
64 bytes from 8.8.8.8: icmp_req=111 ttl=55 time=2434 ms
64 bytes from 8.8.8.8: icmp_req=112 ttl=55 time=1948 ms

And that high rise came when I paused download.

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Guest Netduma_Iain

Ok that is not a broadcast storm it's a bug in your modem. You can see the high pings occur at the modem.

 

We are working with the modem manufacturer to get to the bottom of this. This should only take a few days.

 

Sorry for the inconvieance mate

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Np, Im happy I get support here. Im sure in most other places I would not get help from someone who understands whats going on.

 

New thing I have noticed is that when I download something my ping rises. Only 10Mbps load gives jittering between 20 and 100ms. Full load through R1 causes that ~200ms ping before high ping state. Tried to stress my internet connection through modem directly without R1. It also gives higher ping, but not that agressively.

 

So, is the simple answer that my modem is just bad one? And R1 just changes something enough that it turns modem into faulty condition?

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Guest Netduma_Iain

Thanks W11CE.

 

Well apparently we may have found the cause of the problem on the modems, I'll keep you updated on what the modem people say.

 

In terms of ping's rising when you download that is what normally happens on the Internet. You should use our congestion control to stop that, so set it to 70% or so and you'll see the ping rise drop significantly when you are downloading.

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