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F5 DNS vulnerabilities mitigation
Hi,
There are 2 preferred methods that are commonly used to upgrade environments with DNS and LTM.
Upgrade DNS devices first, immediately followed by upgrading the big3d version on all 'client' devices.
Upgrade BIG-IP DNS First
Upgrade the big3d client on each LTM device to bring the big3d client version up to the DNS version.
Otherwise:
Upgrade LTM Devices first, Then upgrade the DNS devices.
Upgrade all LTM devices - the .iso includes the matching big3d client for that firmware release.
this ensures the big3d client is 'newer or equal to' the BIG-IP DNS device version.
at a future time, as required, upgrade the BIG-IP DNS device to match the BIG-IP LTM version.
What should I upgrade first: BIG-IP LTM or BIG-IP DNS? (f5.com)
in your case, i suggest going with LTM first, usually i followed. If DNS is prior, do DNS device first then upgrade big3d upgrade
Overview of big3d version management (f5.com)
Thanks
Aswin
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