I got 2 x C4506E (with Sup7E) in VSS going to upgrade from software version 3.4.8.SG to 3.8.8.E
1.) I would like to know the best procedure to reduce the downtime.
2.) While i am reloading the active Supervisor Engine, is it all the line card in this primary chassis will be failed to work and forwarding traffic? Since there are some devices only connected to the primary chassis only. would like to know the impact time