I have 3 cisco 3548 switches that are all on the same LAN. Right now each switch is configured as vlan1 with all ports a member. Question is how to improve performance? Should these switches be put in a cluster configuration? What else can be done to improve network performance between the switches. All ports are set for spanning-Tree = portfast, printers 10 mb half, workstations 100 full. I am seeing no collisions on the switches.