Cabletron Systems 9H423-28 - Manual (Page 12)

Introduction
1-2
Features
Processor
The 9H423-28 module is equipped with an advanced Intel i960 microprocessor.
This microprocessor provides a platform for all management functions, such as
Spanning Tree, RMON, and MIB support, within a scalable RISC-Based
architecture.
Fast Packet Switching
The 9H423-28 module incorporates a hardware-based switch design referred to as
the SmartSwitch ASIC, a collection of custom ASICs designed specifically for
high-speed switching. Because all frame translation, address lookups, and
forwarding decisions are performed in hardware, these modules can obtain a
throughput performance of greater than 750K pps.
Management
The 9H423-28 features SNMP for local and remote management. Local
management is provided through the RS-232 COM ports on the SmartSwitch 9000
Environmental Module, using a standard VT-220
TM terminal or emulator. Remote
management is possible through Cabletron’s SPECTRUM or any SNMP-
compliant management tool. Included as management features are the IETF
Standard Management Information Base (MIBs) RMON (RFC1271), IETF MIB II
(RFC-1213), IETF Bridge MIB (RFC-1493), and a host of other Cabletron enterprise
MIBs. These modules also offer a wide variety of statistical network management
information to enhance network planning and troubleshooting. The 9H423-28
provides information for each front panel Ethernet port, including packet counts
along with errored frame information, such as collisions, CRCs, and Giants, via a
variety of industry standard and private MIBS. Industry-standard IEEE 802.1d
bridging, including Spanning Tree Algorithm, is supported.
Connectivity
The 9H423-28 module has one interface to the INB and 28 front port connections.
The INB interface is a fixed connection to INB-B that allows the module to
communicate with other SmartSwitch 9000 modules supporting various LAN
technologies including: Token Ring, FDDI, Ethernet, WAN, Fast Ethernet and
ATM. 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, and the RJ45 connectors, ST connectors and
FEPIM (the module supports either the FE-100TX or the FE-100FX) provide four
100 Mbps Ethernet ports. The multimode ST connectors provide a 100BASE-FL
connection, with links up to 2000 meters in length.
Auto-negotiation
The auto-negotiation feature (available only with the 100BASE-T RJ45 ports )
allows the module to automatically use the fastest rate supported by the device at
the other end (either 10 Mbps or 100 Mbps at either half or full duplex). To