3Com 3C63311 Reference Guide - Page 63

Installation Procedures 51 Connecting to the Ethernet Port To connect to the Ethernet port, run a cable from the port to the LAN. The Link LED illuminates if you make the connection properly. The cable run from the PathBuilder S330/S310 Ethernet port to the Ethernet LAN connection must be no longer than 100 meters, in compliance with EIA/TIA standards for 10BaseT. This cable length should include service loops at the ends and the complete cable route distances. Ethernet Port LEDs In addition to the common LEDs described earlier in this chapter, the following LEDs indicate the status of the Ethernet port. See Figure 21. TX data (green)-Indicates transmit (to the cable) activity. The LED flashes momentarily for each frame sent to the cable. RX data (green)-Indicates receive (from the cable) activity. The LED flashes momentarily for each frame received from the cable. Link (green)-Indicates that you have a link to the remote system. If this LED is off, then a problem exisits with the remote link. For example, the Ethernet cable may not be connected properly, or the remote Ethernet unit may be down. Figure 21 PathBuilder S330/S310 Ethernet Port LEDs Link RX data TX data