A customer is insistent on only ordering a DNA-E bundle ( C9410R-96U-BNDL-E ) of a C9400 and adding a 2nd SUP as a spare, even though I point out that high availability is specific to DNA-A in the datasheet/ordering guide. https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-9400-series-switches/nb-06-cat9400-swit-ser-cte-en.html
What will happen when they install the 2nd SUP? Will it work fine except failover? Will it work fine except for testing new IOS? will it go 'out of compliance' and not allow changes after 90 days? Will it work just fine?
