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69 posts

Master Geek


  Reply # 282113 14-Dec-2009 09:08
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Some of us don't have twitter, can you keep us updated via Geekzone......

536 posts

Ultimate Geek


  Reply # 282116 14-Dec-2009 09:12

Latest from twitter:


XT Fault Update: Looking at resolution closer to 10am, will let you know further details once they come in ^AC


http://twitter.com/TelecomNZ/status/6637710609

85 posts

Master Geek
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  Reply # 282122 14-Dec-2009 09:24
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Is anyone from Telecom willing to give any technical explanation on what has caused this fault? I just can't understand how an outage at a single location, even a major one, can cause total network loss for the entire South Island and the South of the North Island?

Why is there no redundancy? I just can't imagine how anyone got away with designing a system that in the event of a single point of outage has the potential bring down the entire network with the potential to disrupt over a million people.

69 posts

Master Geek


  Reply # 282125 14-Dec-2009 09:30
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Here here, or at least some sort of credit for the disruption's

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Uber Geek
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Biddle Corp
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  Reply # 282127 14-Dec-2009 09:32
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stubbed: Is anyone from Telecom willing to give any technical explanation on what has caused this fault? I just can't understand how an outage at a single location, even a major one, can cause total network loss for the entire South Island and the South of the North Island?

Why is there no redundancy? I just can't imagine how anyone got away with designing a system that in the event of a single point of outage has the potential bring down the entire network with the potential to disrupt over a million people.


One can only presume it's an RNC failure. This is the resourse that controls all the cellsites (node B's) within a network.


BDFL - Memuneh
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BDFL - Memuneh
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  Reply # 282131 14-Dec-2009 09:34
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sbiddle: One can only presume it's an RNC failure. This is the resourse that controls all the cellsites (node B's) within a network.

While a network has mutliple RNC's there are no "backups" as such.



Interesting that every time I read about a XT outage the official word is "down south of Taupo".



What makes their network above Taupo more resilient?








62 posts

Master Geek


  Reply # 282132 14-Dec-2009 09:36
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I first noticed it down around 5:45am, FWIW.

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Master Geek
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  Reply # 282133 14-Dec-2009 09:37
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One can only presume it's an RNC failure. This is the resourse that controls all the cellsites (node B's) within a network.


That's fine, but why isn't there a backup? Surely if the Taupo site is responsible for controlling everything South of it in the country then the logical thing to do would be to have redundancy at this location.

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Uber Geek
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  Reply # 282136 14-Dec-2009 09:47
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Just as I was about to fire up my new T Stick :)

69 posts

Master Geek


  Reply # 282137 14-Dec-2009 09:50
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What's the latest on Twitter? ...... man, I need a coffee.

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Master Geek
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  Reply # 282139 14-Dec-2009 09:52
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Twitter:

# @nzmatts yep - all sites for XT south of taupo are down, currently working on it, some sites are back up, we're working through the rest ^AC 5 minutes ago from CoTweet in reply to nzmatts

# @JonoHale we currently have a network issue with XT users south of taupo unable to get reception, look at our updates for further info ^AC 6 minutes ago from CoTweet in reply to JonoHale

9 posts

Wannabe Geek


  Reply # 282143 14-Dec-2009 09:55
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See here if you can't get to Twitter for updates - http://www.telecom.co.nz/help/alerts

69 posts

Master Geek


  Reply # 282144 14-Dec-2009 09:56
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Thanks, keep the updates coming guys.

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Ultimate Geek
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  Reply # 282148 14-Dec-2009 09:59
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This is not a single element (server) failure. A failure earlier this morning had a cascade effect on a number of elements which resulted in the major issue we have now.

Luckily this did not affect customer service for the northern part of our network.

This was not a "single point of failure" issue.

FYI, the XT network is divided into two based on number of cell sites and number of customers.




The comments I write on this forum do not necessarily reflect the views of my employer and as such cannot be taken as official statements of my employer.

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