Справочник Пользователя для Cabletron Systems 8H02-16

If an FE-100TX is installed, the field steps to Auto-Negotiation, 
10Base-T, 10Base-TFD (full duplex), 100Base-TX, and 100Base-TXFD 
(full duplex). In normal operation, the port with an FE-100TX installed is 
capable of auto-negotiating the operational mode and no further user 
setup is required. Section 6.14.3 describes how to configure an 
FE-100TX.

Advertised Ability (Selectable)

During auto-negotiation, the FE-100TX “tells” the device at the other end 
of the segment what its capabilities are. The capabilities of a port (15 or 
16) with an FE-100TX installed are 10Base-T, 10Base-TFD (full duplex 
mode), 100Base-TX and 100Base-TXFD (full duplex mode). In normal 
operation, with all capabilities enabled, the FE-100TX “advertises” that it 
has the ability to operate in any mode. The Network Manager may choose 
to set up the port so that only a portion of the available capabilities are 
advertised and the others are disabled. For example, only 100Base-TX 
and 100Base-TXFD might be enabled so that only devices that operate at 
100 Mbps can communicate with that port. 

When an FE-100FX is installed in port 15 or 16, it must be manually set 
to operate in the same technology as the device at the other end of the 
connected segment. Section 6.14.2 provides instructions for manually 
configuring the port with an FE-100FX interface.

In normal operation, the port with an FE-100TX installed 
automatically establishes a link with the device at the other end 
of the segment without requiring user setup. However, Local 
Management provides the user with the option of manually 
configuring that port.