Specifications

3.5 Switches
3–52 Network Modules
3.5.3 DECswitch 900EF
The DECswitch 900EF product is a high-throughput, SNMP manageable, multiport
network switch solution for linking Ethernet with FDDI LANs. Figure 3–17 shows
the DECswitch 900EF network module.
The DECswitch 900EF module is a “line speed” Ethernet to FDDI IEEE 802.1D-
compliant switch for the backbone. It has six Ethernet switched ports and one FDDI
port, providing full switching capability among each of the six Ethernets and an
FDDI LAN. The DECswitch 900EF module has six Ethernet ports on the front panel
(two AUI and four 10BaseT), and a DAS FDDI port with fixed ANSI multi-mode
MIC connectors.
Each of these ports is configurable, using clearVISN software, to connect either
through:
• The front panel ports.
• One of six backplane Ethernet segments of a DEChub 900 MultiSwitch.
• Port 3 can be connected to the backplane ThinWire
• Port 4 can be connected to the network port of a DEChub ONE single-slot
chassis
• The FDDI port can be directed to one DEChub 900 MultiSwitch FDDI back-
plane LAN or the modPMD ports on a DEChub ONE-MX.
The DECswitch 900EF product is a true backbone network switch that supports
complete filtering capabilities (source MAC address, destination MAC address,
protocol type). It includes a large address table (over 8000 node addresses) and is
fully IEEE 802.1D bridge compliant.