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APPENDIX E: 10BASE-T Ethernet Bridge Module
Figure E-7. RJ-45 line interface.
NOTE
Two-wire line drivers use RJ-45 pins 4 and 5.
E.6 Operation
In order to operate, the rear card must be connected to a front function card and
installed in the rack unit. It also requires a 10BASE-T connection. After power is
applied, the rear card automatically starts performing the bridging function
without additional user intervention. MAC addresses discovered are automatically
loaded into the MAC address table. They are automatically deleted from the MAC
address table if they experience an inactivity of 8 minutes.
E.6.1 P
OWER
-U
P
The rear card is hot-swappable. It receives power from the rack power bus.
Therefore, it is powered up as soon as it is plugged into the rack and the rack
power supply is turned on.
- - - - - - - - - - - - - - - - - 1 Not connected
- - - - - - - - - - - - - - - - - 2 Not connected
- - - - - - - - - - - - - - - - - 3 (4-wire RX-)
- - - - - - - - - - - - - - - - - 4 (2-wire Tip) (4-wire TX+)
- - - - - - - - - - - - - - - - - 5 (2-wire Ring) (4-wire TX-)
- - - - - - - - - - - - - - - - - 6 (4-wire RX+)
- - - - - - - - - - - - - - - - - 7 Not connected
- - - - - - - - - - - - - - - - - 8 Not connected
