Chapter 1
Introduction
The 9H423-28 (Figure 1-1) is a switching module with twenty-four 10 Mbps Ethernet ports and four 100 Mbs Fast Ethernet ports. The module is configured with two RJ21 connectors, two RJ45 connectors, two ST fiber connectors and a slot for an FEPIM. The two RJ21 connectors provide twenty-four 10 Mbps Ethernet ports. The RJ45 connectors, ST connectors and FEPIM (the module supports either the FE-100TX or the FE-100FX) provide the four 100 Mbps Ethernet ports. The two ST connectors represent a single port, as one connector is for transmit and one is for receive. Each module also provides an additional port that connects directly to the Internal Network Bus (INB) backplane interface. This module uses a SmartSwitch ASIC design and an advanced Intel i960® microprocessor. This microprocessor provides a platform for all management functions within a scalable RISC-Based Architecture.
This module can operate in two modes: either as a 28-port Ethernet traditional switch (using 802.1d standards) with a high speed backbone connection, or as a Secure Fast Switch (SFS) with 28 Ethernet connections. Each port can be configured to operate in the Full Duplex mode. This configuration allows each 10BASE-T port to provide a full 20 Mbps of bandwidth and the 100BASE-T ports to provide 200 Mbps of bandwidth. The fiber ports on this module operate only in Full Duplex mode.
Network management information is available through a variety of methods. All information based on Simple Network Management Protocol (SNMP) is accessible either via an in-band (Front Panel port), Side Band (SMB-10), or via the Environmental Module’s COM ports. Serial Line Internet Protocol (SLIP) or Point-to-Point Protocol (PPP) is supported by the Environmental Module’s COM ports. For more information on the SMB-10, SLIP, or PPP, refer to the SmartSwitch 9000 Local Management User’s Guide.
The 9H423-28 also features front panel LANVIEW™ Diagnostic LED’s to offer at- a-glance status information about each front panel port, as well as the operation of the overall module.
