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deang

3 posts

Wannabe Geek


#97615 17-Feb-2012 23:21
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Hi

I recently moved house from Three Kings to Remuera and "upgraded" Orcon plans to the Genius.  The Three kings address had excellent broadband performance while the performance from Remuera is really broken!

My connection speed is ok as is attenuation and noise margin.

                              Upstream     Downstream
Actual Data Rate    1001 (Kbps.) 19038 (Kbps.)
Noise Margin        13 dB        11 dB
Attenuation         5 dB         11 dB

I've been in contact with Orcon support but haven't made any real progress plus I've found a couple of other posts, some over about 6 months old, around the web with what seems like a similar problem.

It shows up most at peak times (6pm-11pm) which is, not surprisingly, the time we use it most. Simple websites are slow to load and streaming video just doesn't.

From my testing so far it seems that any traffic passing through a router with address 121.99.12.0 has high packet loss.

What I'ld like is for other Orcon customers to run a tracert (traceroute) to the following IP addresses followed by a 10 minute pingtest and post the results. I'm hoping this will show me what, if any, network differences there are compared to a well performing Orcon connection.

Trinet - 173.241.131.241
Cogent - 38.104.84.29
Vocus - 192.203.154.123
Hurricane Electirc  - 16.218.221.1
Google - 72.14.214.5

These are ISP peers that I discovered with help from http://bgp.he.net

Below are my ping test results to these ISP connections done at about 8:45 Friday 17/2.  What the results show is that traffic passing through the router with IP address 121.99.12.0 has a high packet loss. The below results only show a 8-9% loss. In one test I got 20% packet loss. Note that the ping test to Vocus is through a different router 121.98.9.169 and has 0% packet loss

Trace Trinet
My IP
60.234.8.203
121.98.9.13
121.99.12.0
173.241.131.241

Ping statistics for 173.241.131.241:
    Packets: Sent = 1354, Received = 1244, Lost = 110 (8% loss),
Approximate round trip times in milli-seconds:
    Minimum = 142ms, Maximum = 472ms, Average = 192ms

Trace Cogent
My IP
60.234.8.203
121.98.9.13
121.99.12.0
38.104.84.29

Ping statistics for 38.104.84.29:
    Packets: Sent = 1300, Received = 1178, Lost = 122 (9% loss),
Approximate round trip times in milli-seconds:
    Minimum = 176ms, Maximum = 479ms, Average = 231ms

Trace Vocus
My IP
60.234.8.203
121.98.9.169
192.203.154.123

Ping statistics for 192.203.154.123:
    Packets: Sent = 1830, Received = 1826, Lost = 4 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 17ms, Maximum = 180ms, Average = 22ms

Trace Hurricane Electirc
My IP
60.234.8.203
121.98.9.25
121.99.12.0
206.223.123.37
216.218.221.1

Ping statistics for 216.218.221.1:
    Packets: Sent = 1279, Received = 1152, Lost = 127 (9% loss),
Approximate round trip times in milli-seconds:
    Minimum = 302ms, Maximum = 1004ms, Average = 350ms

Trace Google
My IP
60.234.8.203
121.98.9.25
121.99.12.0
72.14.214.5

Ping statistics for 72.14.214.5:
    Packets: Sent = 763, Received = 672, Lost = 91 (11% loss),
Approximate round trip times in milli-seconds:
    Minimum = 42ms, Maximum = 295ms, Average = 100ms


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sbiddle
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  #583075 18-Feb-2012 08:45
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Do you have any actual evidence of packet loss (ie TCP or UDP packets being dropped), or just ICMP packets that could be being dropped by a router?



deang

3 posts

Wannabe Geek


  #583323 18-Feb-2012 22:53
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Good point.

I installed Wireshark and traced a few connections but tonight, for the first time, everything seems to be running at good speed. TV on demand is not stop-starting and most sites a loading without delay.

The tracing does show a lot of DUP ACKs (about every 4th packet) for macromedia-fcs which is the TV stream and for normal http type traffic too with the occasional Retransmission or segment lost.


deang

3 posts

Wannabe Geek


  #584281 21-Feb-2012 00:21
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I started to stream off tvnz and found the source IP of the stream to be 60.234.9.230 which is only a few hops away from my ip.

Tracing route to 60.234.9.230 over a maximum of 30 hops

  1     3 ms      2    18 ms    17 ms    18 ms  60.234.8.203
  3    17 ms    17 ms    17 ms  xe-1-0-0.cre1.nct.orcon.net.nz [121.98.9.13]
  4    17 ms    17 ms    17 ms  60.234.9.230

Trace complete.

So I was wrong thinking that there was a problem with a router 121.99.12.0. This show's I don't really know what I'm doing but I am reading and learning...

Using Wiresharks Statistics -> IOGraphs -> Filter = tcp.analysis.flags produces the graph below

Packet Analysis

Original image --> https://docs.google.com/document/d/1wz5tzaAJTTcPYPSR02NQmn859KbdjUfW6po-kUWlxPc/edit

The red bar mostly represents TCP DUPs which I believe represent lost packets. I'ld be grateful if someone with good performance could post a similar graph for comparison.

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