DNS is not the place to solve that problem, it's the routing layer.

"Use Bgp Luke " :-)

Sent from my iPad

On 08/05/2013, at 15:24, Sten Carlsen <st...@s-carlsen.dk> wrote:

> I believe your major point is the routing tables because they determine how 
> the response is trying to get out.
> 
> 
> On 08/05/13 22:22, Steven Carr wrote:
>> You will need to have some form of automation in place to update the
>> DNS zone to change the IP address which should now be accessed when
>> one of the links goes down. You will also need to ensure you have a
>> low TTL value on the records you want to update on link change so that
>> the records are refreshed quickly.
>> 
>> 
>> 
>> On 8 May 2013 20:40, Ward, Mike S <mw...@ssfcu.org> wrote:
>>> Hello all, I was wondering if someone could me out.
>>> 
>>> I am using Bind 9.2 on a Redhat Linux server. We have two ISPS on separate 
>>> networks Lets call them A and B. My Linux Server can listen on A's Network 
>>> as well as B's network.
>>> I'm using fictitious IPs and names
>>> 
>>>         A 111.111.111.1                  B 555.555.555.1                    
>>>         Secondary A 111.111.222.1
>>> 
>>>                                   Redhat & Bind
>>> 
>>> Bind is listening on both IP addresses and we have a secondary server at 
>>> 111.111.222.1
>>> 
>>> 
>>> If A the ISP has a backbone router problem how can I get people trying to 
>>> get to our web servers to use B's network? I have been think of different 
>>> ways to do this, but have come up empty.
>>> 
>>> Our network is really simple I just want to be able to use diverse ISPS in 
>>> case we lose one we still have the other. Can anyone help me out. Any help 
>>> appreciated.
>>> 
>>> Thanks.
>>> 
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> -- 
> Best regards
> 
> Sten Carlsen
> 
> No improvements come from shouting:
>        "MALE BOVINE MANURE!!!"
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