Specifications

A.2 Dual Ring Configurations
A–4 FDDI Configuration Capabilities
A.2 Dual Ring Configurations
DEChub 900 FDDI network modules support front panel as well as backplane FDDI
ports. When configured in a dual ring topology, ports are assigned a ring port (A port
or B port) by management.
MultiChassis Manager users can assign a ring port using the Station Configuration
window. Any SNMP based management software can also be used.
Because individual FDDI network modules can support a subset of these configura-
tions, each of the FDDI network module capabilities are described in the following
sections.
A.2.1 Dual Ring Port Configuration Examples
Figure A–1 shows the basic dual attachment station (DAS) port configurations that
can be management assigned.
Figure A–1 Dual Ring Port Configurations
Backplane Ports
BAB A
ABA B
LKG-10063-95F
Front Panel Ports