Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
PenultimateHop
637 posts

Ultimate Geek

Trusted

  #704113 20-Oct-2012 20:00
Send private message

Publius:What i've calculated is that maybe 2/3rds of the latency between NZ-US NZ-AS (and im measuring just the latency between the two routers in a traceroute which are on either sides of the undersea cable) is due to physical limitations, but ~1/3rd isn't and it surprises me that its as high as that.

1. Things are unlikely to improve end-to-end latency wise until it is feasible to increase the speed of light inside fiber.
2. You are not measuring what you think you are: "the latency between two routers in a traceroute which are on either sides of the undersea cable". This is just absolutely incorrect.
3. As explained before you are seeing the end-to-end latency to Brisbane due to the topology of the network involved.
4. Don't trust reverse DNS.

Affiliate link
 
 
 

Affiliate link: Buy anything now at AliExpress.
Linuxluver
5797 posts

Uber Geek

Trusted

  #704125 20-Oct-2012 20:25
Send private message

Publius: I'm wondering if some clueful poeple here can help me.

I've been looking at a few traceroutes from NZ to various overseas destinations and what been bugging me is the times involved with the undersea cable legs.

For example round-trip tracing from Auckland to Sydney (host905.rimuhosting.com)
5. vocus1.ape.nzix.net 3.4
6. ten-0-2-0-400.bdr01.akl01.akl.VOCUS.net.au 43.1

So the real-world one-way distance would be 19.85ms
According to wolfram|alpha "distance auckland sydney" is 10.1ms
According to Southern Cross Networks themselves the auckland sydney cable leg is 11.38ms.

So 19.85 real world, 11.38 for the distance. We have a missing 8.47ms which is huge!

Can anyone explain why? Don't tell me its routers because i'm measuring the between two routers in a path.
Maybe network equipment we can't see? In this trace its within the Vocus network before it heads across the sea and stays within the Vocus network for a good number of hops after so not likely that its bad network design (ie surely all things within their control).

I should add that this is true for Auckland->US etc, and the above trace is not a problem but an example of a generalisation of why Auckland-Sydney (or any other place) seems twice as far away as it should be.


Maybe this is what Kim Dotcom found out: the traffic is being routed via GCSB spying routers - three of them. 

Telecom was investigating why his dedicated connection to the Sky Tower suddenly slowed down...and discovered the traffic was being routed to a different place. 

Plus some ISPs run through the Internal Affairs spying firewall.....supposedly set up to catch paedophiles (the usual excuse), but mighty handy for spying on absolutely.... everyone.  

That would add some latency. 




_____________________________________________________________________

I've been on Geekzone over 15 years..... Time flies.... 


sbiddle
30853 posts

Uber Geek

Retired Mod
Trusted
Biddle Corp
Lifetime subscriber

  #704129 20-Oct-2012 20:40
Send private message

Linuxluver:
Publius: I'm wondering if some clueful poeple here can help me.

I've been looking at a few traceroutes from NZ to various overseas destinations and what been bugging me is the times involved with the undersea cable legs.

For example round-trip tracing from Auckland to Sydney (host905.rimuhosting.com)
5. vocus1.ape.nzix.net 3.4
6. ten-0-2-0-400.bdr01.akl01.akl.VOCUS.net.au 43.1

So the real-world one-way distance would be 19.85ms
According to wolfram|alpha "distance auckland sydney" is 10.1ms
According to Southern Cross Networks themselves the auckland sydney cable leg is 11.38ms.

So 19.85 real world, 11.38 for the distance. We have a missing 8.47ms which is huge!

Can anyone explain why? Don't tell me its routers because i'm measuring the between two routers in a path.
Maybe network equipment we can't see? In this trace its within the Vocus network before it heads across the sea and stays within the Vocus network for a good number of hops after so not likely that its bad network design (ie surely all things within their control).

I should add that this is true for Auckland->US etc, and the above trace is not a problem but an example of a generalisation of why Auckland-Sydney (or any other place) seems twice as far away as it should be.


Maybe this is what Kim Dotcom found out: the traffic is being routed via GCSB spying routers - three of them. 

Telecom was investigating why his dedicated connection to the Sky Tower suddenly slowed down...and discovered the traffic was being routed to a different place. 

Plus some ISPs run through the Internal Affairs spying firewall.....supposedly set up to catch paedophiles (the usual excuse), but mighty handy for spying on absolutely.... everyone.  

That would add some latency. 


While this was quoted in the media I don't for one second actually believe it. You don't intercept traffic by rerouting it, you simply mirror ports. This won't increase latency in any way.

Likewise the DIA filter is simply a BGP based route meaning it also can't affect latency



DonGould
3892 posts

Uber Geek


  #704130 20-Oct-2012 20:44
Send private message

sbiddle:  While this was quoted in the media I don't for one second actually believe it. You don't intercept traffic by rerouting it, you simply mirror ports. This won't increase latency in any way.

Likewise the DIA filter is simply a BGP based route meaning it also can't affect latency


Do we really have to let facts get in the way of a good conspiracy story?!




Promote New Zealand - Get yourself a .kiwi.nz domain name!!!

Check out mine - i.am.a.can.do.kiwi.nz - don@i.am.a.can.do.kiwi.nz


sbiddle
30853 posts

Uber Geek

Retired Mod
Trusted
Biddle Corp
Lifetime subscriber

  #704142 20-Oct-2012 21:01
Send private message

It's also worth mentioning (as reported in many media stories about Dotcom) that he actually had fibre installed to his home. His fibre isn't going to be running to the Sky Tower, however there were reports he did have a backup wireless link to the Sky Tower.


Linuxluver
5797 posts

Uber Geek

Trusted

  #704159 20-Oct-2012 22:04
Send private message

sbiddle:

While this was quoted in the media I don't for one second actually believe it. You don't intercept traffic by rerouting it, you simply mirror ports. This won't increase latency in any way.

Likewise the DIA filter is simply a BGP based route meaning it also can't affect latency


Good to know. But you're assuming competence. ;-)  




_____________________________________________________________________

I've been on Geekzone over 15 years..... Time flies.... 


Linuxluver
5797 posts

Uber Geek

Trusted

  #704161 20-Oct-2012 22:06
Send private message

DonGould:
sbiddle:  While this was quoted in the media I don't for one second actually believe it. You don't intercept traffic by rerouting it, you simply mirror ports. This won't increase latency in any way.

Likewise the DIA filter is simply a BGP based route meaning it also can't affect latency


Do we really have to let facts get in the way of a good conspiracy story?!


The spying isn't a theory. That is a cold, hard fact....whether it's the GCSB watching foreigners or Internal Affairs watching locals. 

But the technical assumptions were theoretical...and Steve B has accounted for those.  




_____________________________________________________________________

I've been on Geekzone over 15 years..... Time flies.... 




Talkiet
4573 posts

Uber Geek

Trusted

  #704171 20-Oct-2012 22:50
Send private message

Linuxluver:
sbiddle:

While this was quoted in the media I don't for one second actually believe it. You don't intercept traffic by rerouting it, you simply mirror ports. This won't increase latency in any way.

Likewise the DIA filter is simply a BGP based route meaning it also can't affect latency


Good to know. But you're assuming competence. ;-)  


He's actually describing how things work. You're the one assuming things. :-)

Cheers- N




--

 

Please note all comments are the product of my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.


1 | 2 
View this topic in a long page with up to 500 replies per page Create new topic





News and reviews »

Samsung Introducing Galaxy Z Flip4 and Galaxy Z Fold4
Posted 11-Aug-2022 01:00


Samsung Unveils Health Innovations with Galaxy Watch5 and Galaxy Watch5 Pro
Posted 11-Aug-2022 01:00


Google Bringing First Cloud Region to Aotearoa New Zealand
Posted 10-Aug-2022 08:51


ANZ To Move to FIS Modern Banking Platform
Posted 10-Aug-2022 08:28


GoPro Hero10 Black Review
Posted 8-Aug-2022 17:41


Amazon to Acquire iRobot
Posted 6-Aug-2022 11:41


Samsung x LIFE Picture Collection Brings Iconic Moments in History to The Frame
Posted 4-Aug-2022 17:04


Norton Consumer Cyber Safety Pulse Report: Phishing for New Bait on Social Media
Posted 4-Aug-2022 16:50


Microsoft Announces New Solutions for Threat Intelligence and Attack Surface Management
Posted 3-Aug-2022 21:54


Seagate Addresses Hyperscale Workloads with Enterprise-Class Nytro SSDs
Posted 3-Aug-2022 21:50


Visa Launching Eco-friendly Payment Solutions in New Zealand
Posted 3-Aug-2022 21:48


NCR Delivers Services to Run Bank of New Zealand ATM Network
Posted 30-Jul-2022 11:06


New HP Portfolio Supports New Era of Hybrid Work
Posted 28-Jul-2022 17:14


Harman Kardon Launches Citation MultiBeam 1100 Soundbar
Posted 28-Jul-2022 17:10


Nanogirl Labs Launches Creator Project
Posted 28-Jul-2022 17:05









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.







Backblaze unlimited backup