Ive read the Cisco white paper on routed access layers and the benfits of having a routed access layer are many:
mitigates L@ loops
load balance across equal-cost paths
route summarization and stub routing
So, what is the argument for having a switched layer then? When would someone opt to maintain a switched access layer when the routed one offers so much?
Before anyone answers that, imagine Im building an access layer (LAN campus or server farm -- doesnt matter) from scratch and that spending money on a L3 switch is no issue.