Hello All, I need to upgrade my ASR 1002-X. Currently it is running with version 15.5(3)S2b. Planning to upgrade to 16.8.3, but it says it is Fuji version. I am confused with names Denali, Everest, Fuji and Gibraltar. please advise what is the differ...

Hello All, I am planning to upgrade IOS on my routers. Given currently running and planning to upgrade version of software. Please suggest if I can upgrade directly from current version or need to go for a step upgrade. Also, please advise the latest...