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rozboon

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#61523 18-May-2010 11:29
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Over the last couple of weeks we've noticed a significant increase in our international data usage.

Doing a bit of digging through squid and throwing some tracerts around it would appear that many sites which were formally served by akamai/other content delivery networks based in Auckland are now coming from a range of vocus.net.au IPs.

Examples include liveupdate.symantecliveupdate.com sphotos.ak.fbcdn.net and msn.co.nz

Can anyone confirm if this is the case?
 

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freitasm
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  #331277 18-May-2010 11:34
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Would this also include Apple iTunes? What ISP?





 

 

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rozboon

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  #331290 18-May-2010 11:53
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Yup, it would appear that x.phobos.apple.com (Apple CDN boxen, afaik) have also gone overseas.

ISP is ACSOnline, over Citylink.

 
 
 
 


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  #331296 18-May-2010 12:05
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It all depends on your ISP and their peering relationships.

Most big ISP's have their own Akamai clusters.

Callplus used to share their cluster over APE (Auckland Peering exchange). Not sure who shares theirs in Wellington.


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  #331297 18-May-2010 12:09
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I've sent an enquiry to Akamai, but as said before, this could be an ISP-related (mis)configuraton...





 

 

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rozboon

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  #331301 18-May-2010 12:16
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Being Citylink we're obviously peered on the WIX and hence the APE is not a long way away.

I just checked from a box in Xnet's datacentre in Auckland and it's going overseas for some Akamai content. download.microsoft.com is 1 hop away, though. As is a1890.phobos.apple.com, which from work goes overseas.

download.microsoft.com is still in NZ for my TelstraClear connection at home but here at work it too went to Sydney.

Starting to suspect something ISP related. I've logged a call with them.


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  #331343 18-May-2010 13:21
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If your ISP doesn't have their own Akamai mirrors, then Akamai seem to move traffic around reasonably unpredictably.

Late last year ICONZ was being directed to the US for around two months. When we contacted them they said they "Didn't have capacity for us within New Zealand". With a little prodding we have since been moved to mirrors in Australia, but it would still be nice to have this content locally again. 




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  #331454 18-May-2010 16:42
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rozboon: Being Citylink we're obviously peered on the WIX and hence the APE is not a long way away.


if your ISP doesnt have their own transit between WIX and APE then the APE could be a very long way away....  connecting to WIX doesnt automatically give you access to APE peers.  the traffic has to transit over someones link.




 
 
 
 


lduncan
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  #331583 18-May-2010 20:39
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freitasm: I've sent an enquiry to Akamai, but as said before, this could be an ISP-related (mis)configuraton...



Looks like it may have been a config glitch. Apple's Akamai stuff is back hitting local servers here on Snap.

Layton 

rozboon

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  #331727 19-May-2010 08:08
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Alas, we're still heading off to Aus for 99% of stuff. Now we are seriously chewing through some international bandwidth :(

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  #331842 19-May-2010 13:00
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rozboon: Alas, we're still heading off to Aus for 99% of stuff. Now we are seriously chewing through some international bandwidth :(


call your ISP and ask them why....perhaps they have switched bandwidth providers and havent built their routing/peering tables optimally




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  #333187 22-May-2010 01:06
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If your ISP has its own Akamai cluster then make sure you are using your ISPs recursive DNS resolvers and not some open ones, typically the cause of such issues.




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  #333190 22-May-2010 01:13
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There's always the nuclear option of installing a caching web proxy/gateway between your connection and your internal network.

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  #333197 22-May-2010 01:55
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Well that may not be necessary, his provider is looking for a solution :)

http://list.waikato.ac.nz/pipermail/nznog/2010-May/016595.html

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