Справочник Пользователя для Cabletron Systems brim f6 brim-f6

Chapter 3: Local Management

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 HSIM-F6 to operate in full 
duplex mode, specific criteria must be met. Before configuring the 
HSIM-F6 to operate in full duplex mode, ensure that the network 
configuration meets the following requirements.

•

The FDDI device that connects to the HSIM-F6 must be a Cabletron 
Systems product that supports full duplex FDDI (e.g., 9F426-02 
MMAC-Plus SmartSwitch module, or another HSIM-F6).

•

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 HSIM-F6 automatically returns to 
standard FDDI operation.

•

There must be two FPIMs installed in the HSIM-F6 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. 
Cabletron Systems recommends that the connection between the two 
devices be made from the A port of one device, to the B port of the 
other. 

Making a connection between the A ports of both devices to 
the B ports of both devices (as is done with a DAS in normal 
FDDI operation) DOES NOT create a redundant path when 
using full duplex FDDI.