[LINK] Optus Outage

[Roger Clarke]

Thanks Alex - interesting!

My uninformed comments early today were:
 > Both a single point-of-failure *and* unintended interdependencies 
among services??  Economising on risk assessment and management seems 
like a good idea, until it doesn't.  And as for investment in 
'warm-site' data-mirrors and fallback processing resources, that's far 
too expensive.

A positive outcome from the event is this proof that not all images of 
cats on the Internet are just fluff and bubble:
http://rogerclarke.com/II/signal-2023-11-08-103155.jpg

_________________

On 8/11/23 10:22 am, Alex (Maxious) Sadleir wrote:
> Around 4am, Optus networks re-announced all their BGP routes at once
> https://radar.cloudflare.com/routing/as7474
> https://radar.cloudflare.com/routing/as4804
> This is indicative of a change management malfunction, akin to IBM's
> 2016 eCensus routers restarting with no routes
> https://www.itnews.com.au/news/ibm-treasury-in-settlement-talks-over-census-failure-440066
> 
> The VoWifi infrastructure seems to be online but unable to connect any
> calls https://goughlui.com/2023/11/08/breaking-optus-nationwide-outage-08-11-2023/
> More alarmingly 000 doesn't work on landlines
> https://twitter.com/lucethoughts/status/1722029287727825124 contrary
> to advice from emergency services
> https://twitter.com/nswpolice/status/1722028862161449151



> On Wed, Nov 8, 2023 at 10:08 AM Tom Worthington
> <tom.worthington at tomw.net.au> wrote:
>>
>> Any more news on what caused the Optus network outage? On ABC Canberra
>> Radio this morning I suggested it was most likely a software upgrade
>> which went wrong, and would be fixed by 6pm.
>>
>> Is VoWiFi working?
>>
>> I use Telstra, but when COVID-19 struck, I purchased an Optus 4G modem,
>> with an Optus SIM. This was in case Telstra went down.
>>
>>
>> --
>> Tom Worthington http://www.tomw.net.au
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> 
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-- 
Roger Clarke                            mailto:Roger.Clarke at xamax.com.au
T: +61 2 6288 6916   http://www.xamax.com.au  http://www.rogerclarke.com

Xamax Consultancy Pty Ltd      78 Sidaway St, Chapman ACT 2611 AUSTRALIA 

Visiting Professor in the Faculty of Law            University of N.S.W.
Visiting Professor in Computer Science    Australian National University

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