Introduction
Features
Processor
The 9E312-12 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 9E312-12 incorporates a hardware based switch design referred to as a Fast Packet Switch (FPS), a collection of custom ASICs designed specifically for high speed switching. Because all frame translation, address lookups, and forwarding decisions are performed in hardware, the 9E312-12 can obtain a throughput performance of greater than 130K pps.
Management
The 9E312-12 features SNMP for local and remote management. Local management is provided through the RS-232 Com ports on the MMAC-Plus Environmental Module using a standard VT-220 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. The 9E312-12 also offers the user a wide variety of statistical network management information to enhance network planning and troubleshooting. This module provides information for each front panel Ethernet 10Base-T 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 9E312-12 module has one interface to the INB and twelve front panel Ethernet connections. The INB interface is a fixed connection to INB-1 which allows the 9E312-12 to communicate with other MMAC-Plus modules supporting various LAN technologies including: Token Ring, FDDI, Ethernet, WAN and ATM. The front panel Ethernet connections are via standard RJ-45 connectors supporting UTP and STP cabling up to 100 meters in length.
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