Is Jobserve knackered?

[the_duderama]

To a point. Country to country connections are pretty redundant, city to city also. Once you get down to local level though it all gets a bit iffy since there is a limited number of bits of wire you can have coming and going from each end point, you can't avoid having multiple services running over a single fibre or a single physical route.

It's still perfectly possible to fully divergent routes (terminate at different exchanges and take different routes to the exchanges) for cables used to connect the hosting site, but it is very expensive. Once it's on the backhaul network (reached a Teclo POP - not a local exchange) all backup routes are fully divergent.

Chances are wherever jobserve is hosted doesn't have a fully divergent solution, but I bet they will very soon!

[saptastic]

" Contractors working on an Olympic venue near Stratford, east London, dug through the fibre optic cable on Saturday knocking a BT exchange at Old Street offline. "


Blame it on the contractors!
Anyone in the Disaster Recovery - start knocking on Jobserve's door.

[pmeswani]

" Contractors working on an Olympic venue near Stratford, east London, dug through the fibre optic cable on Saturday knocking a BT exchange at Old Street offline. "


Blame it on the contractors!
Anyone in the Disaster Recovery - start knocking on Jobserve's door.

They probably have a DR in place, but didn't realise that the secondary ISP were going through the same backbone.

[The Agents View]

" Contractors working on an Olympic venue near Stratford, east London, dug through the fibre optic cable on Saturday knocking a BT exchange at Old Street offline. "


Blame it on the contractors!

Get off your soap box!

In this context, the blame is directed at the company responsible for delivering the (piling works I think) Project - not the individuals engaged by them!

It does beg the question how a group of "specialists" can miss a 20ft wide tunnel running straight under the olympic park, and not notice the funny noise the drilling machine was making before the lights went out though.....

[DaveB]

It's still perfectly possible to fully divergent routes (terminate at different exchanges and take different routes to the exchanges) for cables used to connect the hosting site, but it is very expensive. Once it's on the backhaul network (reached a Teclo POP - not a local exchange) all backup routes are fully divergent.

Chances are wherever jobserve is hosted doesn't have a fully divergent solution, but I bet they will very soon!

Yes it is possible and yes it is expensive, but at some point those routes come back together and may not be as divergent as you think. You may have physically independent routes into your site from seperate local exchanges but those exchanges almost certainly share a common connection at the regional exchange. If the line from the regional exchange gets cut, as appears to have happened here, then you are still stuffed.

This incident has caused the same kind of outage as the Manchester tunnel fire a few years ago. This cut off 130000 lines including many businesses that supposedly had redundant or divergent connections to prevent this happening.

[BrilloPad]

Apparently this outage has also stopped me getting mobile phone reception at clientco!

I have to go outside to get a signal.

Seems it took out some mobile phone masts : well at least that is what t-mobile are telling me.......