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Stoofa
Contributor
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Message 1 of 2

Massive packet loss inside BT network

Hi,

I'm attempting to troubleshoot some connectivity issues I'm having with a couple of online games.

I've found an app called "WinMTR" which effectively runs a "pathping" for me.

I have tried tracing through to the games servers and also a few websites and I'm find the same issue (below is an example when tracing through to a website):

 

|------------------------------------------------------------------------------------------|
|                                      WinMTR statistics                                   |
|                       Host              -   %  | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------|
|                          BThomehub.home -    0 |  262 |  262 |    0 |    0 |    3 |    0 |
|                   No response from host -  100 |   53 |    0 |    0 |    0 |    0 |    0 |
|                           31.55.186.193 -   17 |  161 |  135 |    0 |   11 |   63 |   10 |
|                           31.55.186.228 -    0 |  262 |  262 |   10 |   11 |   25 |   11 |
|                           195.99.127.58 -    0 |  262 |  262 |   10 |   10 |   23 |   10 |
|        host213-121-193-89.ukcore.bt.net -    0 |  262 |  262 |   10 |   11 |   33 |   11 |
|                    linx-224.as13213.net -    0 |  262 |  262 |   11 |   12 |   33 |   12 |
|                           83.170.70.226 -    0 |  262 |  262 |   11 |   12 |  106 |   11 |
|               hera.thewebhostserver.com -    0 |  262 |  262 |   10 |   11 |   33 |   11 |
|________________________________________________|______|______|______|______|______|______|
   WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider

 

17% packet loss at the 3rd hop - 31.55.186.193. According to the RIPE registry this is a BT Broadband router.

 

Below is another trace, this time to the bbc.co.uk

 

|------------------------------------------------------------------------------------------|
|                                      WinMTR statistics                                   |
|                       Host              -   %  | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------|
|                          BThomehub.home -    0 |  145 |  145 |    0 |    1 |   10 |    0 |
|                   No response from host -  100 |   30 |    0 |    0 |    0 |    0 |    0 |
|                           31.55.186.193 -   14 |   94 |   81 |    0 |   10 |   22 |   12 |
|                           31.55.186.208 -    0 |  145 |  145 |   10 |   11 |   27 |   11 |
|                           195.99.127.56 -    0 |  145 |  145 |   10 |   12 |   23 |   12 |
|  peer2-et-9-1-0.telehouse.ukcore.bt.net -    0 |  145 |  145 |   10 |   11 |   23 |   11 |
|                            194.74.65.42 -    0 |  145 |  145 |   11 |   11 |   27 |   11 |
|                   No response from host -  100 |   30 |    0 |    0 |    0 |    0 |    0 |
|                ae0.er01.cwwtf.bbc.co.uk -    0 |  145 |  145 |   12 |   13 |   23 |   12 |
|                         132.185.255.165 -    0 |  145 |  145 |   12 |   13 |   24 |   13 |
|              fmt-vip132.cwwtf.bbc.co.uk -    0 |  145 |  145 |   11 |   12 |   23 |   12 |
|________________________________________________|______|______|______|______|______|______|
   WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider

 

This time 14% packet loss at exactly the same router.

 

So how can I report this as a network fault? Obviously with packet loss so early in my trace it makes tracing a fault further downstream difficult as the early packet loss is almost certainly affecting the readings further along.

Just want BT to be made aware so they can look into fixing this issue.

 

Regards.

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Sage
Sage
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Message 2 of 2

Re: Massive packet loss inside BT network

There is no network fault. All packets reached their destination.

 

All you are seeing is intermediary routers perfoming as expected. i.e. treating echo requests as low proity.

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