Switch stacking involves connecting multiple physical switches to operate as a single logical unit. This article is designed to help network administrators effectively configure, maintain, and troubleshoot switch stacks. This table provides release and related information for the features explained in this article. Does the core connect to a disti layer or collapsed backbone or something else? Depending on what the core is actually doing will inform what suggestions we might make. Now you wonder what are these access layer switches? thatActually, there are three types of switches in a LAN. These are Core, Distributed layer, and.