Forum Discussion

Antonio_5736's avatar
Antonio_5736
Icon for Nimbostratus rankNimbostratus
Oct 27, 2011

Integration GTM and actual DNS architecture

We are designing a active-active cpd system and we are thinking use GTM or other global load balancer solution for part of our internet services. We didn't have experience with dns load balancers.

 

 

Our managers don't want modify actual dns architecture. We need than some hosts be balanced and other ones be in the actual dns system.

 

 

 

Example:

 

 

mydomain.com

 

 

access.mydomain.com --> balanced service must be treated by load balancer

 

 

service1.mydomain.com --> balanced service must be treted by load balancer

 

 

xxx.mydomain.com --> not balanced service must be treted by local dns (redirected to local dns)

 

 

xx1.mydomain.com --> not balanced service must be treted by local dns (redirected to local dns)

 

 

 

Can we do that? It is supported?

 

 

application delivery
availability
BIG-IP DNS
gtm
TMOS
  • Helena_101649's avatar
    Helena_101649
    Icon for Nimbostratus rankNimbostratus
    Nov 21, 2011
    It's supported. You just delegate name resolution of the A record you want to the GTM.

     

     

    In your DNS server you create a subdomain of mydomain.com, for example, gtm.mydomain.com, and delegate it to your GTM.

     

    Then, for each A record you want to be treated by the GTM, you create an alias (CNAME record), like:

     

     

    access.mydomain.com -> access.gtm.mydomain.com

     

     

    You can read about that in "BIG-IP® Global Traffic Manager™:Implementations", chapter "Delegating DNS Traffic to Wide IPs", available in F5 Website.