Full Duplex Fddi - Cabletron Systems DELHF-UA User Manual

To configure the DELHF-UA to operate in full duplex mode, two
FPIMs MUST be installed in the DELHF-UA.
3.9.1

Full Duplex FDDI

Full duplex FDDI is the creation of a 200 Mbps point-to-point link
between two FDDI devices that support full duplex FDDI operation. Full
duplex FDDI is a technology where the end devices simultaneously
transmit and receive data at 100 Mbps. For the DELHF-UA to operate in
full duplex mode, specific criteria must be met. Before configuring the
DELHF-UA to operate in full duplex mode, ensure that the network
configuration meets the following requirements.
• The FDDI device that connects to the DELHF-UA must be a
DIGITAL product that supports full duplex FDDI (e.g., another
DELHF-UA).
• Full duplex FDDI is a point-to-point link between two devices that
support full duplex operation. No other stations may be present on the
ring. If a third station is added, the DELHF-UA automatically returns
to standard FDDI operation.
• There must be two FPIMs installed in the DELHF-UA to connect to
the other full duplex FDDI device. To operate in full duplex mode, one
port transmits data while the other receives data simultaneously.
DIGITAL recommends that the connection between the two devices
be made from the A port of one device, to the B port of the other.
DELHF-UA User's Guide
The Full Duplex Configuration Screen
3-27