D-Link DFE-550TX ユーザーズマニュアル

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D-Link DFE-550TX Adapter 
 
• 
Forgot a document and out of town?  Send a Wake-up 
signal to your computer and retrieve the needed file. 
• 
Initiate long routines and reports before you get to work. 
• 
Transfer files when the network traffic is low (during late 
hours). 
• 
Power ON your PC before you arrive to work. 
• 
The MIS department can upgrade software on computers 
after hours from a remote station. 
WOL is very helpful in limiting the power consumption of PCs, 
workstations, and kiosks. 
Flow Control 
The DFE-550TX implements IEEE 802.3x compliant flow 
control for full duplex, which provides traffic management 
functions for full-duplex operation. Flow control allows for 
enhanced full duplex operation with switches. When operating 
at full duplex (requiring a direct connection to a switch) and 
the switch’s data buffer is about to overflow, a Pause frame 
will be transmitted to the DFE-550TX.  The ensuing idle time 
keeps the buffer from overflowing and prevents data from 
being lost. This enhancement can improve network 
throughput, avoid collisions and prevent lost data, helping the 
network achieve optimal performance. 
IP Multicasting 
The DFE-550TX uses chip-level address filtering when 
implementing IP Multicasting (defined in RFC 1112). This 
hardware-based implementation provides a huge performance 
increase over other interface cards. Formerly, broadcast 
packets were used for multicasting, but they are a less than 
ideal solution for transmitting packets to groups. This is