Hello - I need to change IP of the DNS server under Setup - Services on our Panorama, FWs and Global Protect devices. Would like to know what kind of downtime I can expect with the cutover to the new IPs especially on t he FWs and VPNs.
Modifying the DNS servers won't cause any downtime. Migrate to the new DNS servers and shutdown the old DNS servers once you've verified they are no longer receiving any requests.
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