Fwd: [Disconnect] RailCorp Sydenham signalling failure report

Time to check your electrolytic caps -------- Original Message -------- Subject: [Disconnect] RailCorp Sydenham signalling failure report From: Andrew McNamara <andrewm(a)object-craft.com.au> To: disconnect(a)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/ _______________________________________________ Disconnect mailing list Disconnect(a)object-craft.com.au https://www.object-craft.com.au/cgi-bin/mailman/listinfo/disconnect

On Fri, Apr 29, 2011 at 4:41 AM, Andy Linton <asjl(a)lpnz.org> wrote:
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):
To their credit, they didn't list the caps as the root cause, but as the "trigger". Scott
participants (2)
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Andy Linton
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Scott Howard