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Eric_27158's avatar
Eric_27158
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Nov 24, 2010

GTM and DNS caching for UDP connections

Hey all, thanks for reading....     I've run into a situation where an outage to a GTM pool node causes problems with client-side DNS caching. For example, I have two nodes in a GTM pool and th...
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naladar_65658's avatar
naladar_65658
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Nov 29, 2010
Well it does allow for us to come up with a more flexible solution for you. Would you mind describing your setup a little more? I understand you have two syslog boxes and from the sounds of it servers are logging to them in a round robin fashion. Are they using publicly available IP's?

 

 

The typical setup that I use is to give my servers an internal IP address. Then set them up as nodes, add them to the same pool and then create a VIP using either a public or private IP address. If it is a public address I then create wideIP in the GTM for that service. If it is a private IP I just go to my internal DNS servers, create an entry for whatever URL I am wanting to setup and aim it at the VIP that I created.

 

 

So your servers would all be aimed at the LTM VIP that you created and it would be load balancing whatever servers you stuck in the pool that you have assigned to it.