[AusNOG] RailCorp Sydenham signalling failure report

[Tom Sykes]

Spanning tree. Awesome.

Might get a taxi from the airport next time I'm up there.

TS.

From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Skeeve Stevens
Sent: Friday, 29 April, 2011 10:31 PM
To: ausnog at ausnog.net
Subject: [AusNOG] RailCorp Sydenham signalling failure report

The link to the full report is @ http://www.railcorp.info/__data/assets/pdf_file/0008/9719/110429-Signal_System_Report.pdf

The Cisco's involved look to be 3550's.

The report is very interesting and describes the networking issues in reasonable detail.


...Skeeve



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Skeeve Stevens, CEO - eintellego Pty Ltd - The Networking Specialists

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On 29/04/11 9:41 PM, "Andy Linton" <asjl at lpnz.org<mailto:asjl at lpnz.org>> wrote:

Time to check your electrolytic caps

-------- Original Message --------
Subject: [Disconnect] RailCorp Sydenham signalling failure report
From: Andrew McNamara <andrewm at object-craft.com.au<mailto:andrewm at object-craft.com.au>>
To: disconnect at object-craft.com.au<mailto:disconnect at object-craft.com.au>
CC:

RailCorp has released their report into the 12 April Sydenham signalling
failure (which crippled the whole metro network). They found it to be
due to a Cisco switch with leaky electrolytic caps repeatedly bouncing
(see the linked PDF):

    http://www.railcorp.info/publications/sydenham


--
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/
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