Transparent Mode - CipherLab 8001 User Manual

1.5.2 Transparent Mode

The Ethernet Cradle acts as a physical layer bridge.
Everything is controlled by the terminal or remote computer.
It is possible for the terminal to work as a FTP client.
Virtual MAC ID & Software MAC ID Filter
Note: For the 8001/8300 Ethernet Cradle, once the transaction is confirmed, LED 1 will
In transparent mode, the terminal will use a virtual MAC ID that is defined by the
Ethernet Cradle to transmit/receive data. This virtual MAC ID is a number, which is
based on and add one to the MAC ID of the Ethernet Cradle. For example, if the
MAC ID of the Ethernet Cradle is 0x00d017c00100, the virtual MAC ID will be
0x00d017c00101.
In order to reduce the traffic of communications on the IR side, a software filter is
implemented so that packets destined to any MAC ID other than that of the terminal
will be discarded. Only DHCP broadcasting packets or packets for the specified
MAC ID (the virtual one) will be forwarded to the terminal.
The Ethernet Cradle will automatically detect the transaction from the terminal.
flash to indicate that (1) the terminal is connected to Ethernet through the cradle,
and (2) the filter is active. For infrared safety concerns, the cradle will stop
forwarding packets after 3 minutes when there is no packet received from the
terminal. LED 1 will become solid red to indicate the status is "waiting to connect".
Chapter 1 Introducing the Ethernet Cradle 7