About the CSX200CSX200 Family User’s Guide 7Ethernet LAN ConnectionThe CSX200 provides 10 Mbps Ethernet/IEEE 802.3 support through twelve (11 if Call Backup isenabled) 8-pin RJ45 10BASE-T ports on the front of the unit (see Figure 1).Repeater Functionality — The CSX200 fully conforms to the IEEE 802.3 Repeater, AUI, and10BASE-T specifications, and provides the flexibility to connect networks using IEEE 802.3,Ethernet Version 1 or Version 2 equipment. The CSX200 transmits retimed data packets,regenerates the preamble, extends fragments, and arbitrates collisions.The CSX200 automatically partitions problem segments, and reconnects repaired segments to thenetwork. This feature minimizes the impact on network operation resulting from a problem on onesegment by isolating the problem segment. Only devices on the problem segment are affected.When the problem is solved, the CSX200 automatically reconnects the isolated segment to thenetwork.Polarity Detection and Correction — Each twisted pair port on the CSX200 incorporates aPolarity Detection and Correction feature that allows the CSX200 to pass data regardless of thepolarity of the twisted pair segment’s receive link. Cabletron does not recommend operating in thiscondition. When this condition is detected, remove the segment from the network and wire itcorrectly to reduce the potential for problems if equipment changes are made.Flash EEPROMs — The CSX200 uses a Flash Electrically Erasable Programmable Read-OnlyMemory (EEPROM) that allows the downloading of new and updated firmware in conjunctionwith Cabletron Systems QuickSET or any device utilizing BootP or TFTP protocols.LANVIEW LEDs — Cabletron Systems LANVIEW Status Monitoring and Diagnostics Systemis a troubleshooting tool that helps in diagnosing power failures, collisions, cable faults, and linkproblems. The LANVIEW LEDs are conveniently located on the CSX200 front panel.RESET Button — Resetting the hub with the front panel RESET button reboots the CSX200 andinitializes the processor. The RESET button is also used with the mode switches to clear NVRAM.
