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103 posts

Master Geek


Topic # 83157 11-May-2011 21:00
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Over the past week or so my connection stability to servers in Australia has become rather erratic. Random spiking and packet loss, at all times of the day.

Here is a traceroute to 2 servers i regularly use. Normally stable ping of 32ms


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103 posts

Master Geek


  Reply # 468065 11-May-2011 21:20
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Here is a more updated traceroute. Left it running for a while more accurate results.

Also,  the 2 australian servers are both in sydney. Included a trace to a server in LA also. Seems im getting a rock solid connection to there




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  Reply # 468073 11-May-2011 21:40
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Seems to be a fair bit of congestion on some border routers in Oz, heres a traceroute to yahoo and the iinet trace was similar -- latency or lost packets in the last few hops. Maybe the Ozzies are under attack by bin laden.

2 27 ms 28 ms 27 ms p32.argent.cust.commverge.net.nz [202.180.81.32]
3 26 ms 27 ms 27 ms vlan93-cpcak3-e1.tranzpeer.net [202.180.76.68]
4 27 ms 27 ms 27 ms vlan7-cpcak3-s1.tranzpeer.net [202.180.81.49]
5 29 ms 27 ms 28 ms vocus1.ape.net.nz [192.203.154.123]
6 51 ms 52 ms 53 ms ten-0-2-0-400.bdr01.akl01.akl.VOCUS.net.au [114.31.202.43]
7 52 ms 52 ms 54 ms ip-206.192.31.114.VOCUS.net.au [114.31.192.206]
8 52 ms 50 ms 52 ms ge-0-0-0.bdr01.syd03.nsw.VOCUS.net.au [114.31.192.59]
9 * 302 ms 314 ms as17457-1.syd03.nsw.VOCUS.net.au [114.31.200.94]
10 53 ms 53 ms 57 ms gi-3-1.bas-a2.aue.yahoo.com [203.84.216.205]
11 324 ms * 312 ms www.yahoo.co.nz [203.84.217.229]




Qualified in business, certified in fibre, stuck in copper, have to keep going  ^_^

 
 
 
 


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  Reply # 468074 11-May-2011 21:44
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interesting that the latency above seems to depend on the return path, which is not shown in the trace.




Qualified in business, certified in fibre, stuck in copper, have to keep going  ^_^



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Master Geek


  Reply # 468078 11-May-2011 21:50
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Strange, did a traceroute to yahoo.co.nz. Get completely different results to you, yet still getting the same to the other servers i tested.


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Wannabe Geek


  Reply # 469094 14-May-2011 16:43
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Slightly off topic: ^ what software are you using to produce those graphs? 

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Geek


Reply # 469131 14-May-2011 19:06
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Not sure if this is related but currently on the All You Can Eat plan, and about 2-3 Months ago strange things started to happen.

I was noticing an increase of http/https connection failures. Recently it's become horrific, I try and access for example; Facebook, Tumblr, Hotmail or gmail and i get nothing, a loading icon in the browser tab and nothing at all. (yes have tried different browsers)

I have since disabled the Slingshot webcache service (through their website) and have noticed a slight change except facebook and tumblr content (media.thumblr.com) still refuse to load.

I have found a workaround...tor...bouncing through a socks connection through the internet, out from Europe gives me better speeds and the pages I need to view better than slingshot can... (this baffles me!)

Is anyone else having similar issues? I gave up waiting for the Service Desk after 45 minutes on hold.

nb. p2p traffic gets better speeds then www traffic these days which boggles my mind - I feel like I've gone back to tcom's Big Time plan!


29.media.tumblr.com

Tracing the path to 29.media.tumblr.com (68.232.44.19) on TCP port 80 (www), 30 hops max
1 192.168.0.100 1.136 ms 1.294 ms 0.645 ms
2 p32.argent.cust.commverge.net.nz (202.180.81.32) 7.620 ms 7.919 ms 7.662 ms
3 vlan93-cpcak3-e1.tranzpeer.net (202.180.76.68) 8.219 ms 8.016 ms 7.656 ms
4 vlan7-cpcak3-s1.tranzpeer.net (202.180.81.49) 8.652 ms 7.836 ms 7.619 ms
5 ge-1-0-0-401.gw1.akl2.asianetcom.net (203.192.130.193) 13.664 ms 10.988 ms 7.895 ms
6 ip-203-192-185-49.asianetcom.net (203.192.185.49) 132.408 ms 132.158 ms 132.286 ms
7 edgecast.com.any2ix.coresite.com (206.223.143.112) 134.279 ms 132.961 ms 132.787 ms
8 68.232.44.19 [open] 132.502 ms 132.895 ms 133.569 ms
 
facebook.com 

Tracing the path to www.facebook.com (66.220.149.32) on TCP port 80 (www), 30 hops max
1 192.168.0.100 0.848 ms 0.672 ms 0.649 ms
2 p32.argent.cust.commverge.net.nz (202.180.81.32) 7.657 ms 7.416 ms 6.870 ms
3 vlan93-cpcak3-e1.tranzpeer.net (202.180.76.68) 8.048 ms 8.416 ms 7.428 ms
4 vlan7-cpcak3-s1.tranzpeer.net (202.180.81.49) 7.703 ms 7.772 ms 7.660 ms
5 ge-1-0-0-401.gw1.akl2.asianetcom.net (203.192.130.193) 7.723 ms 8.310 ms 7.587 ms
6 ip-203-192-185-49.asianetcom.net (203.192.185.49) 133.255 ms 132.562 ms 132.651 ms
7 facebook.com.any2ix.coresite.com (206.223.143.161) 132.976 ms 132.535 ms 136.335 ms
8 xe-1-1-0.bb02.sjc1.tfbnw.net (204.15.21.162) 140.946 ms 140.443 ms 141.716 ms
9 ae1.dr02.snc5.tfbnw.net (74.119.77.190) 140.910 ms 141.343 ms 141.151 ms
10 po509.csw02b.snc5.tfbnw.net (74.119.78.28) 141.286 ms 140.811 ms 141.673 ms
11 www-13-02-snc5.facebook.com (66.220.149.32) [open] 141.403 ms 141.492 ms 141.807 ms

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Master Geek
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  Reply # 469202 15-May-2011 08:41
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Seems to be a problem with Slingshot or their upstream:

Sometimes I don't get a trace at all

Tracing route to 203-217-24-91.hypernia.com [203.217.24.91]
over a maximum of 30 hops:

  1     1 ms     1 ms     1 ms  192.168.1.1
  2    31 ms    31 ms    31 ms  202.180.81.31
  3    32 ms    31 ms    30 ms  vlan94-cpcak3-e1.tranzpeer.net [202.180.82.82]
  4    31 ms    31 ms    32 ms  vlan7-cpcak3-s1.tranzpeer.net [202.180.81.49]
  5    31 ms  192.168.1.1  reports: Destination protocol unreachable.

Otherwise:

Tracing route to 203-217-24-91.hypernia.com [203.217.24.91]
over a maximum of 30 hops:

  1     1 ms     1 ms     1 ms  192.168.1.1
  2    32 ms    30 ms    30 ms  202.180.81.31
  3    31 ms    31 ms    31 ms  vlan94-cpcak3-e1.tranzpeer.net [202.180.82.82]
  4    31 ms    31 ms    31 ms  vlan7-cpcak3-s1.tranzpeer.net [202.180.81.49]
  5    31 ms    31 ms    31 ms  ge-1-0-0-401.gw1.akl2.asianetcom.net [203.192.130.193]
  6    31 ms    32 ms    32 ms  ip-203-192-185-54.asianetcom.net [203.192.185.54]
  7    56 ms    55 ms    56 ms  xe-0-0-0.gw2.syd5.asianetcom.net [203.192.174.178]
  8    57 ms    56 ms    56 ms  GigabitEthernet2-13.pit1.Sydney.telstra.net [139.130.55.25]
  9    56 ms    57 ms    57 ms  TenGigE0-1-0-2.ken-core4.Sydney.telstra.net [203.50.20.1]
 10    57 ms    57 ms    56 ms  Bundle-Ether1.ken39.Sydney.telstra.net [203.50.6.146]
 11    92 ms    56 ms    56 ms  iinetl1.lnk.telstra.net [139.130.15.30]
 12    56 ms    57 ms    56 ms  te1-4.syd-mas-bdr1.iinet.net.au [203.215.20.95]
 13    57 ms    56 ms    57 ms  te1-2.syd-mas-bdr2.iinet.net.au [203.215.20.152]
 14    57 ms    57 ms    57 ms  203.215.18.77
 15    56 ms    56 ms    57 ms  203-217-24-91.hypernia.com [203.217.24.91]

Trace complete.

Testing from elsewhere (US, EU) seems to be fine.


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  Reply # 469203 15-May-2011 08:50
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Thepilgrim: I was noticing an increase of http/https connection failures. Recently it's become horrific, I try and access for example; Facebook, Tumblr, Hotmail or gmail and i get nothing, a loading icon in the browser tab and nothing at all. (yes have tried different browsers)

I have since disabled the Slingshot webcache service (through their website) and have noticed a slight change except facebook and tumblr content (media.thumblr.com) still refuse to load.


Are you using Slingshot's own DNS or some third party like Google DNS or Open DNS?

 




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Geek


  Reply # 469206 15-May-2011 09:01
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Currently have two internal dns servers that do all the work, although nothing has changed in this environment.

bind and 2k8



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  Reply # 469207 15-May-2011 09:03
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BDFL - Memuneh
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  Reply # 469208 15-May-2011 09:06
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My point is that using any DNS that's not your ISP's own DNS will result in wrong IP addresses returned when resolving names.

The IP addresses may be correct but might not be the right one if you should be receiving content from local caches (either from your ISP or peered). This happens if the content you are trying to reach is pulled from a CDN, in which case overseas DNS will give you an IP for a CDN box that is probably outside the country, making everything slow.

Worse, if your ISP has a firewall (as most do) it might drop the response packets.

This happens with things like Facebook, Apple iTunes and others that use Akamai for example.





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  Reply # 469210 15-May-2011 09:13
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They are not configured to forward dns requests to any isp. They rely on the root dns servers and their own caching.

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  Reply # 469211 15-May-2011 09:15
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In which case your DNS is probably not getting access to local (as in New Zealand) CDN servers making everything a lot slower...

Just curious, what do you get if you ping cdn.geekz1.com?





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Geek


  Reply # 469217 15-May-2011 09:59
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damnit update didn't update

Have tried pointing directly to slingshot with the same results (cleared cache etc...)

Additionally since turning off the SS webcache pages have been half loading, i captured a http GET request in wireshark and saw that after the ACK being returned by the destination server, it then sends back "HTTP [TCP Previous segment lost] Continuation or non-HTTP traffic"

All very odd

I will continue to investigate and will touch base with SS today to see if they can shed some light on the situation.

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  Reply # 469222 15-May-2011 10:20
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Could you please reply with the results for cdn.geekz1.com using your setup (not using Slingshot's DNS).

Make sure you run IPCONFIG /flushdns before testing (if you are using Windows).




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