In the 802.1Q mode (the default mode of operation), the module functions as an 802.1D switch until you configure VLANs. Up to 1024 VLANs can be configured. IEEE 802.1Q switching allows migration to Virtual Network technologies without requiring the replacement of existing equipment. 1.10 STANDARDS COMPATIBILITY The 5H102-48 and 5H103-48 modules are fully compliant with the IEEE 802.3, 802.3u, 802.3x, 802.1D, and 802.1Q standards. The modules provide IEEE 802.1D Spanning Tree Algorithm (STA) supp

4-5 4.3 Using the RESET Button................................................................................. 4-7 A SPECIFICATIONS A.1 Module Specifications .....................................................................................A-1 A.2 Physical Properties .........................................................................................A-1 A.3 Environmental Requirements..........................................................................A-1 A.4 Input/Output Ports ....