Overview6H123-50 and 6H133-37 User’s Guide1-31.3 OVERVIEWThe 6H123-50 and 6H133-37, shown in Figure 1-1, are interface modulesfor the Cabletron Systems 6C105 SmartSwitch 6000 chassis.The 6H123-50 and 6H133-37 are high-speed network repeater/switchdevices. The 6H123-50 provides four Ethernet repeated segments andfour Fast Ethernet repeated segments (CONN 1 through CONN 4). The6H133-37 provides three Ethernet repeated segments and three FastEthernet repeated segments (CONN 1 through CONN 3). The RJ21connectors each consist of 12 repeater ports that are able to reside on theEthernet (10 Mbps) or the Fast Ethernet (100 Mbps) segment. EachEthernet and Fast Ethernet segment supports 802.1D switching(bridging), Cabletron Systems SecureFast Switching Virtual Networktechnology and IEEE 802.1Q Port Based VLANs.Slots 5 and 6 (interfaces 9 and 10) of the 6H123-50 support optional FastEthernet Interface Modules providing uplinks to 100BASE-TX or100BASE-FX Fast Ethernet networks. The 6H133-37 is capable of beingequipped with a High Speed Interface Module (HSIM) that provides foradditional connectivity to other high speed networking technologies suchas Asynchronous Transfer Mode (ATM), Fiber Distributed Data Interface(FDDI) and Wide Area Network (WANs).The 6H123-50 and 6H133-37 switch each Ethernet and Fast Ethernetsegment (CONN 1 through CONN 4 and CONN 1 through CONN 3) toone another and to the optional Fast Ethernet Interface modules of the6H123-50 or an HSIM installed in the 6H133-37.
