Hi , I have 3 cluster gateways managed by Gaia R77.30(complex network with 300 site-site VPNs and multiple server ) and I want to update IPS on each gateway and these are my questions:
1- what pre-requisite needed before starting update?
2- what potential impact should I expect?
3-and how to troubleshoot if any impact happen ?
4-is there any backout plan ?
appreciate if you can share your experiences?