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An access switch is a switch that almost always only runs Layer 2 or Ethernet, it does not router packers only forwards frames. An access switch may only have end user computers attached and a connection (or multiple connections using LACP) to the core switch.You may also have servers connected to theaccess switch, but this may or may not be a good idea.n access switch may only have end user computers attached and a connection (or multiple connections using LACP) to the core switch. You may also have servers connected to theaccess switch, but this may or may not be a good idea.
Chapter 1. Basic Switch Operation. What an Ethernet Switch Does. Ethernet switches link Ethernet devices together by relaying Ethernet frames between the devices connected to the switches. By moving Ethernet frames between the switch ports, a switch links the traffic carried by the individual network connections into a larger Ethernet network.