Cabletron Systems SEH-22 User Manual

Also see for SEH-22: User guide

Contents

CHAPTER 1: INTRODUCTION1-4SEH USER’S GUIDE1.5 STACKABLE CAPABILITIESThe SEH is a non-intelligent hub designed to be managed by a CabletronSystems intelligent hub such as the SEHI or the MicroMMAC. Intelligenthubs serve as the logical “top” of the stack. They manage all SEH hubs inthe stack, providing full packet and error statistics for the entire stack,individual device, or individual port. Stack up to five SEH hubs for anon-managed stack or one intelligent hub and up to four SEH hubs for amanaged stack. Hubs can be added or removed from the stack withoutpowering down the entire stack.1.6 OPTIONAL FEATURESThe following features are not included with the SEH, but can bepurchased separately from Cabletron Systems.Ethernet Port Interface Modules (EPIMs)EPIMs enable the expansion of a network through a variety of media.Cabletron offers the EPIMs shown in Table 1-1.Table 1-1. EPIMsEPIM Media Type ConnectorEPIM-A 10BASE-5 AUI DB15 (Female)EPIM-C 10BASE-2 Thin Coaxial BNCEPIM-T 10BASE-T Unshielded Twisted Pair RJ45EPIM-X Standard Transceiver DB15 (Male)EPIM-F1 Multimode Fiber SMAEPIM-F2 Multimode Fiber STEPIM-F3 Single Mode Fiber ST