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Josh_41258's avatar
Josh_41258
Icon for Nimbostratus rankNimbostratus
Mar 31, 2016

GTM: Delegation of top level domain

We currently delegate individual hostnames to GTM, a la:

 

www.example.com IN NS gtm1 www.example.com IN NS gtm2

 

Then, we create a WIP on the GTM for www.example.com. This works fine. But now, we have a requirement to introduce GSLB for 'example.com' What are my options here? Do I have to delegate the entire 'example.com' domain to the GTM? Does the GTM need to be authoritative for this entire domain?

 

How are others handling this scenario?

 

application delivery
BIG-IP DNS
dns
gtm

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  • IanB's avatar
    IanB
    Icon for Employee rankEmployee
    Apr 01, 2016

    Delegation is just creating a pointer that sends a DNS client to the right DNS server. Obviously the GTM can't respond to a DNS request if it never receives the request.

     

    In your case, you could move the zone to the GTM, or you could set up a CNAME in the original zone that redirects requests for example.com to something like gslb.example.com. That might be easier to do in your environment.

     

    This document - Delegating DNS Traffic to Wide IPs might help with the concepts