Specifications

A.7 DECswitch 900EF
FDDI Configuration Capabilities A–9
A.7 DECswitch 900EF
The DECswitch 900EF (previously called the DECbridge 900MX) supports two
FDDI ports that can be individually assigned to either the module’s front panel (Port
1A/M and Port 1B/S) or to the backplane ports for connection to a DEChub 900
MultiSwitch or to a DEChub ONE-MX docking station. Therefore, the DECswitch
900EF module can have only two FDDI ports that are active at any time (for exam-
ple, two front panel ports, one front panel and one backplane port, or two backplane
ports).
A.7.1 Port Assignments
The FDDI port assignments are software configurable via MultiChassis Manager or
the setup port menu. Figure A–6 shows how two front panel ports, two backplane
ports, or a front panel port and a backplane port can be configured as A and B ports
or M and S ports.
Figure A–6 DECswitch 900EF Port Configuration Capabilities
Front Panel Ports
LKG-10068-96F
Backplane Ports DEChub ONE-MX ModPMD Ports
Front Panel Ports
A/M B/S
A/M B/S
DECswitch 900EF
A/M
B/S
A/M
DECswitch 900EF
B/S