[c-nsp] PoP(s) failure and WWW redirect

[Mark Tohill]

Bruce,

Thanks for your reply.

Apologies, I worded that poorly. Major customers being customers we WWW
host for.

We have only one provider but two connections to their AS and we run
eBGP between each other. (We recently implemented our own AS no. with a
view to proper multi-homing)

Each of our two PoP's advertises it's own address space.

Does this change anything?

Mark.

-----Original Message-----
From: Bruce Pinsky [mailto:bep at whack.org] 
Sent: 04 October 2005 18:04
To: Mark Tohill
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] PoP(s) failure and WWW redirect

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Mark Tohill wrote:
> Hi,
> 
>  
> 
> Has any implemented or have thoughts on the following?
> 
>  
> 
> If we loose our upstream provider (our only provider) connectivity or
> they have routing 'issues', we can redirect major customers to an
> off-site temporary holding page.
> 
>  
> 
> I was pointed towards the following on CCO recently.
> 
>  
> 
>
http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_
> guide09186a00800b5d54.html
> 
>  
> 
> Is this an option and are there any others? BTW, DNS has been ruled
out.
> 
>  
> 

Are these customer inside or outside your network?  If outside, how
could
you conditional inject a route if you've lost connectivity to your
provider?  If inside, is this "holding page" reachable by your
customers?

Unless this "holding page" server has the same IP address as the
original
destination, how would a conditional route advertisement help?

If the IP address is the same, this might help but there may be other
tricks depending on your IGP.

- --
=========
bep

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