I'll be upgrading our pair of 4507R+E running Sup7L-E for the first time. These guys are running as a VSS pair with Quad sups. I'm going from 3.4 to 3.8.7. I'm looking to stay away from ISSU cause frankly I'm too scared of it. I convinced management that I need a window and thankfully I got it. Does anyone have any procedures for this type of upgrade? Is it as simple as setting my bootvariables and reloading? I found a document on cisco but they mention the use of RPR which is not something we are running. Anyone have any good docs for this?
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