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GTM/DNS as a smart DNS server ("without" LTM)
F5 GTM(DNS) can work directly with 3-rth party servers without LTM and you may use health monitors like SNMP or ICMP or HTTP/HTTPS for the monitoring:
Better to also configure a prober pool to select which BIG-IP devices (LTM or DNS/GTM) will send the probes to the generic hosts as otherwise the F5 devices will use and automatic algoritam to delegate the monitoring to one of them that will inform the other F5 devices if the servers are up:
https://support.f5.com/csp/article/K08433560
https://support.f5.com/csp/article/K10385
You can use DNS irules to make more specific logic like for specific client ip addresses or hostnames to return the pool with generic host servers and not the one with LTM Virtual servers:
https://clouddocs.f5.com/api/irules/DNS_REQUEST.html
Hi, Nikoolayy1,
thank you for your reply! It seems that "Generic Host" server type offers the options I need. I will look into it. Thanks!
- Nikoolayy1May 14, 2022MVP
I hope that it is the solution you are searching for. After you have tested, you can share with us so we can close this post.
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