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Forum Discussion

Preet_pk's avatar
Preet_pk
Icon for Cirrus rankCirrus
Jan 17, 2022

GTM - Multiple name server

Hi,   We have GTM deployed as name servers in both DC & DR - in at any point of time if name server in DR is not reachable, what will happening to the dns queries that are initiated from external...
BIG-IP
BIG-IP DNS
security
Nikoolayy1's avatar
Nikoolayy1
Icon for MVP rankMVP
Jan 26, 2022

You may also have DNS resolution from a standby F5 device in a cluster if the DNS listener is a local self ip :

 

https://support.f5.com/csp/article/K5427

 

A BIG-IP pair in which both units are licensed with BIG-IP DNS or BIG-IP Link Controller and both units answer DNS queries regardless of the BIG-IP active-standby state

On each unit you can configure a listener to use the non-floating self IP address or other local IP address on which the system listens for connections. This configuration allows either unit to respond to DNS queries regardless of the BIG-IP active-standby state.