This is all very nice talking about Vectors outage however what I don't
quite understand is that I was told point blank by several people that the
problem was caused by Vectors circuit to Wellington failing.
Now if this was the case why was there an interruption of services being
delivered inter/APE? Classic example was a machine hosted over at Orcon was
visible over Orcon's DSL links but was not over any Kordia links located in
Auckland. Or for that matter Iconz, and a couple of other providers that
were tested at the time.
I would have thought that the very nature of peering exchanges would enable
connections via peered providers.
UPS and Battery Backup are a joke, I often wonder why critical systems don't
employ external direct connections to battery systems rather than having to
used PSU's, UPS's and Inverters. Granted these are often packaged in pretty
housings but they are still not as efficient as running a device off the
power it was designed to work with.
Take a leaf out of the Military's book. Most of their gear has an external
DC option so it can be connected to something in the field and will run for
Heck you can even get 3000AH 12V Disposable Cells these days. And no I did
not make a mistake. That is 3KAH. When you work that into what a router
draws (1.2AH) or there about that's a heck of a long time.
Even the new generation deep cycles these days have a cyclic life of some 3
to 10 years.
I had a PSU failure on one critical site some time back, due to the ugly
battery system I had set up with NO inverter we ran for around a week
without the PSU. When it was reconnected there were no outages.
The same site previously had been set up with an inverter and the best we
managed to get was around 24Hrs of uptime.
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From: Matthew Poole [mailto:firstname.lastname@example.org]
Sent: Tuesday, July 01, 2008 11:05 AM
Subject: Re: [nznog] Vector, did you try turning it off and then on again
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Richard Naylor wrote:
| OK MAN CPEs are tricky. A cheap UPS is useless. The line interactive
| type do let thru spikes and surges and if your CPE device has a cheap
| switching PSU it will often lock up, die, or do nasty things. So to get
| a decent UPS (ie rectifier followed by inverter) you need to spend over
And given that Vector were using, at the time, Cisco 29xxG's (I think.
Pretty sure they were just dumb L2 switches) for CPE, a $1k UPS would
almost double the equipment cost per install. That's not inconsiderable.
| Then you have batteries and maintenance. A typical power company (I used
Which was really my point. Keeping a lot (and it'll number in the
hundreds for Vector) of UPS's up and running isn't a trivial ask. The
cost would be phenomenal, and every time batteries need to be changed
it's an outage for the CPE that's on the end of it.
| If you want to help your MAN supplier deliver a better performance and
| you run a nice UPS, then offer to give them some of your 230V off your
| UPS. Then you know that they have power at your end. And if you have a
| diesel as well.......
| Its a nice cheap solution, and you know the performance of their backup.
Yeah, I think that was kind of what Vector were hoping for. But a lot of
their terminating switches are buried in basement rooms to which only
the building manager has a key. I know that we had quite a few instances
of banging heads on walls trying to get access to put our kit in with
Vector's, because the keys to the appropriate room were hard to locate.
"Don't use force. Get a bigger hammer."
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