07-21-2021 09:59 AM
Hi Guys
I have to upgrade a couple Cisco 4500 VSS, from 3.8 to 3.11 version. I need know is supported the ISSU?
TIA
Cristian
07-21-2021 10:23 AM
M.
07-21-2021 10:44 AM
Thank you marce1000, but I need know if I can upgrade the version from 3.8 to 3.11 with ISSU . I can´t find information about of compatibility.
TIA
Cristian
07-21-2021 02:39 PM
read the release notes :
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/ol-311xe-4500e.html
07-21-2021 03:40 PM
This question gets asked every few months.
It is not recommended to perform an upgrade with ISSU or FSU/eFSU because if it does not work, it will fail very spectacularly. Another reason why ISSU or FSU/eFSU is not recommended is because ISSU or FSU/eFSU does not support ROMMON upgrade.
IMPORTANT: Read the Release Notes if the ROMMON needs to be upgraded or not. When in doubt, always upgrade the ROMMON!
A good guide on how to upgrade the switch (in VSS), including ROMMON, can be found HERE.
07-21-2021 05:46 PM
Here is the compatibility matrix:
You cannot directly jump but can go via multiple jumps.
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