On May 9, 2013, at 8:44 AM, Carlos Martinez <carlosm3...@gmail.com> wrote:

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

Yes, but *sometimes* DNS is the right layer for this… For example, if you have 
2 sites (so you can remain up when a meteor / flood / avalanche hits one), if 
you need better latency, etc.

I guess the short answer is "Redundancy is hard, lets go shopping…"

> 
> "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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