Upgrade ASR-920-4SZ-A from 15.x directly to 17.3.x?

Ulrik Rosen · ‎05-25-2023

Question about upgrade of the ASR-920-4SZ-A

If the rommon is upgraded to the lastest version are there any problems going from 15.x (eg 3.18) directly to 17.3.7 ?
or do i need to step through 16.x first?

marce1000 · ‎05-25-2023

- Check Release Notes for targeted version and look for upgrade and or installation instructions ,

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

Ulrik Rosen · ‎05-26-2023

I have done that and haven't found any definitive info in the release notes about the direct upgrade from 15.x to 17.x
There are some tacacs differences and some other minor ones that has no apparent impact on our routers.

So i will make the 16.x step just to be sure even if it takes som time due to the slow reload time and disturbance during the upgrade