Help with unresolvable domain (subdomain, actually)

[Kevin Darcy]

On 3/1/2011 6:30 PM, Mark Andrews wrote:
> In message<4D6D7268.1080305 at chrysler.com>, Kevin Darcy writes:
>> I got a trouble ticket on this too.
>>
>>   From the looks of things, Cisco is using GSSes to load-balance this
>> site. GSSes return SERVFAIL if all of the resources behind the
>> load-balancer are down (which it determines via a heartbeat mechanism).
>> So I think this is a "simple" case of a website (or cluster) going down.
>> It was down earlier today, then up again, as of this writing, it is down
>> again.
>>
>> DNS doesn't really have a response code of "requested resource not
>> available", so SERVFAIL is Cisco's closest approximation. It has the
>> drawback, however, of often making other sorts of problems appear to be
>> DNS problems. That's just a cross that we DNS admins have to bear...
>>
>>                                               - Kevin
> Then the load balancer should return default records or 0.0.0.0/:: to
> indicate the name is good but doesn't currently have a address.
I like that solution, actually. Even if the client doesn't recognize it 
as a "special" address, hopefully if it tries to connect to it, the 
packet won't make it past the first router or switch hop...

Has anyone proposed this to the load-balancer vendors?

                                                                         
                                                                 - Kevin