Cabletron Systems Cabletron CyberSWITCH CSX5500 User Manual

Also see for CyberSWITCH 5500: Quick start Manual

Contents

USER’S GUIDE94 CyberSWITCHC ONNECTING A DAPTER I NTER -BOARD CABLESThere are three possible cables used to connect adapters: flat, crossover, and LCD. Flat cablesconnect adapters with like connectors, and crossover cables connect the flat cables of adapters withdiffering connectors. LCD cables apply to former Network Express products (NE2000-II, 4000,5000) only. These cables connect the system’s liquid crystal display (LCD) to the WAN adaptergroup.CONNECTING MULTIPLE ADAPTERSWAN and DM adapters need inter-board cables to communicate with each other over an inter-board bus. (LAN, V.35, RS232 and encryption adapters never require inter-board cabling.) TheWAN adapters use either a Time Domain Multiplexing (TDM) bus, a Multiple Vendor IntegrationProtocol (MVIP) bus, or both. The DM adapters use an MVIP bus only. Each adapter has at leastone bus connector, and some (such as the PRI-23 and PRI-23/30) have both.The following table classifies the adapters according to inter-board connector type:All TDM and MVIP connectors, if present, are along the top of the card as shown in the SystemAdapters Appendix. If you are unsure of the location of the adapter’s connectors, refer to the adapterillustrations for clarification.The type of inter-board bus (or buses) you should install depends upon your unique systemconfiguration. The following suggestions should help you achieve the cleanest connections:Adapter Inter-Board Connector TypeLAN (Ethernet) (none)V.35 (none)RS232 (none)BRI-1 (none)BRI-4 TDMPRI-8 TDMPRI-23 both TDM and MVIPPRI-23/30 both TDM and MVIPExpander TDMDM-8 MVIPDM-24 MVIPDM-24+/30+ MVIPencryption (DES/RSA) (none)