20 CHAPTER 2: SWITCH 4007 M ODULESSwitch Fabric ModulesThe Switch 4007 supports 9-port and 24-port GigabitEthernet Switch Fabric modules. Both switch fabricmodules fit into slot 7 of the Switch 4007 chassis.3Com enables you to simplify your installation byselecting from four pre-configured starter kits.n Fast Ethernet starter kits are pre-configured withone 9-port Switching Fabric (Model Number:3CB9FG9) in slot 7.n Gigabit Ethernet starter kits are pre-configuredwith one 24-port Switching Fabric (Model Number:3CB9FG24T) in slot 7.The Switch Fabric modules support the following keyfeatures:n 18 Gbps or 48 Gbps switching capacityn Hot-swapping of modulesn IEEE 802.1D Spanning Tree Protocol bridging forGigabit Ethernetn Multicast packet firewall to limit broadcast stormsn Port trunking support for 12 groups, with up to sixports in a groupn IEEE 802.1Q VLAN tagging for up to 126 groups ofport-based virtual LANs (VLANs)n Embedded Simple Network Management Protocol(SNMP) management agentn Support for four RMON-1 groups: EthernetStatistics, History, Events, and Alarms9-port Gigabit Ethernet Switch FabricModel Number: 3CB9FG9The 9-port Gigabit Ethernet (GEN) Switch FabricModule is optimized for use in wiring closets. Themodule has six non-blocking Gigabit Ethernet portsthat connect directly to the chassis backplane toprovide high-speed, low-latency connectivity betweenSwitch 4007 interface modules. Its front panelfeatures three non-blocking Gigabit InterfaceConverter (GBIC) interface ports that accept optionalGBIC transceivers (see “GBIC Transceivers” onpage 25). Figure 6 shows the front panel.Figure 6 Front Panel of 9-port Switch Fabric ModuleTo learn more about this module, refer to the 9-PortGigabit Ethernet Switch Fabric Module Quick StartGuide on the Online Manuals CD-ROM.24-port Gigabit Ethernet Switch FabricModel Number: 3CB9FG24TThe 24-port Gigabit Ethernet (GEN) Switch FabricModule is designed for use in network backbones,data centers, and other high-density networksegments. The 24-port GEN Switch Fabric Module has24 nonblocking Gigabit Ethernet ports that connectto the chassis backplane to provide high-speed,low-latency connectivity between Switch 4007switching modules. Figure 7 shows the front panel. 3CB9FG9MOD STAT12983456789PRISECFRONTPANEL7RXTXRXTXRXTX