It would't remove the access to the site. It would just mean you needed a lot 
of volunteer to spend a short amount of time in the location. A dirty bomb like 
this would most likely do little damage to the infrastructure in the location.

Regards,
Neil.

From: Mike Simpson <mikie.simp...@gmail.com<mailto:mikie.simp...@gmail.com>>
Date: Wednesday, 30 October 2013 20:38
To: "uknof@lists.uknof.org.uk<mailto:uknof@lists.uknof.org.uk>" 
<uknof@lists.uknof.org.uk<mailto:uknof@lists.uknof.org.uk>>
Cc: Stephen Wilcox <steve.wil...@ixreach.com<mailto:steve.wil...@ixreach.com>>
Subject: Re: [uknof] London Proof Tier 1 - Manchester TCW

A few years ago I had to do major incident planning for the emergency services 
so we were running through "likely" scenarios. The one that sticks in my mind 
as being described as "worryingly feasible" was the caesium based "dirty bomb" 
which would remove access to an area the size of docklands++ for longer than 
the diesel supplies would last.

Seems reasonable to avoid a geophysical SPOF

On 30 Oct 2013, at 18:00, Ben King 
<b...@warwicknet.com<mailto:b...@warwicknet.com>> wrote:

Hi Stephen,

Coming back to you on your original point, you make a valid point that if you 
lose London you lose most of the UK, from my perspective though UK is far from 
the whole game, we only supply businesses in a pretty region specific area, the 
vast majority customers are directly connected to our network (as opposed to 
via another providers active network) and all customers have a route to 
Manchester that avoids London, so in the event of a London fail I am sure they 
would be delighted to be able to continue to send traffic outside of the UK and 
carry on their international business relations (I concede there may be other 
hurdles that get in the way in that scenario).

I think you actually highlight is that ideally more providers should be 
attempting to be present in both London and Manchester to give greater UK 
diversity.

Regards... Ben






On 30 October 2013 17:41, Stephen Wilcox 
<steve.wil...@ixreach.com<mailto:steve.wil...@ixreach.com>> wrote:
Well, take a list of Tier1s:
AT&T
Qwest
Savvis
DT
XO
GTT
Verizon
Sprint
Telia
NTT
Level3
Tata
Zayo
Cogent
FT
Seabone


Remove any that only have BGP PoPs in docklands or no UK POP, this leaves:

GTT
Level3
Zayo
Cogent

Remove any that dont interconnect outside docklands with BT, Virgin, Talktalk, 
Sky:

Level3.. maybe?
Cogent.. maybe?
Zayo.. maybe?


Why not pick someone not in the tier1 list with better UK connectivity and 
network (that was my prior point).... this gives you a wide choice.

Steve







On 30 October 2013 17:28, James Bensley 
<jwbens...@gmail.com<mailto:jwbens...@gmail.com>> wrote:
Continuing this thread;

Can anyone recommend a good Tier 1 provider that is at least docklands
proof (by which I mean Global Switch 1 / 2  & Smelehouse East / North
/ West)? Everyone and their mum is in that little cluster, can anyone
recommend a Tier 1 that is proven to not depend on those sites rather
than all of London?

Whilst I don't think this is quite such a big ask as the original
question I'd like to find a provider who can provide me routes from
else where, be it Manchester or else where in London etc, *that don't
go via docklands already*. A couple of providers I have had
conversation with have said that traffic would go via docklands but
then if docklands explosededed, it would then go via Manchester or via
else where instead, but then they would then be running a fail over
scenario; links could be congested, latency increases etc etc.

Any providers who will be not be routing via docklands as default is
more specifically what I'm after.

Cheers,
James.





--

Ben King <b...@warwicknet.com<mailto:j...@warwicknet.com>>

WarwickNet - The Business & Science Park ISP

Tel: 024 7699 7222

Mob: 07973 848007

http://www.warwicknet.com<http://www.warwicknet.com/>



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