My company has 2 3512's as our external publically addressed switches, these are what my load balancers plug into. Our Fw's are inside the LB and then we have two 3548's inside the FW's. I want to find out someone else's opinion on whether or not we should vlan and attach the 3512's to the 3548's for redundancy. we currently have a gig and fe connections between the 3512's and someone wants to put a gig connection between the 3512's and the 3548's using tagging.
I would like to see some documentation on whether this is safe or should not be done?