Cisco ios switches7/23/2023 ![]() So to perform the upgrade I have disconnected the VSS link and will upgrade each switch in turn and will then connect the VSS link again.įirst copy your image file into the bootflash: of the switch, this can be done via TFTP or USB. This process is performed on two switches which are not in production. I will not be covering how to do a hitless upgrade using ISSU with 2 switches in a VSS pair. The post describes the process of how to upgrade the IOS / Software on a Cisco 4500X switch. ![]()
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