[f-nsp] UDP and non-DSR ?

[Eldon Koyle]

Since I haven't seen anyone else reply...

>From what I remember, if you don't want to do any NAT and you also want
both directions of traffic to go through the load balancer (ie.
non-DSR), it must be in-line; I'm not completely sure what you are
asking, though.  You can certainly put DNS servers behind the load
balancer and use source-nat, just like you do with your webservers.

Or are you having difficulty getting DNS replies back to the right
backend webserver?

-- 
Eldon Koyle
Information Technology
Utah State University
-- 
The founding fathers tried to set up a judicial system where the accused
received a fair trial, not a system to insure an acquittal on technicalities.

On  Sep 17 22:44-0400, David Miller wrote:
> I have an application that's time sensitive enough that normal DNS timeouts won't work if one of them is down.
> 
> I have a pair of Serveriron 4G's, so it's natural to use a couple of name servers and load balance between them with a health check.  I do this to access http on load balanced web servers and it works fine - the source address becomes the SI and the packet gets NATted both ways.
> 
> Question: When doing UDP DNS queries, how do I avoid DSR?  
> 
> Thanks,
> 
> --- David
> 
> 
> 
> 
> 
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