Cabletron Systems SEH100TX-22 manual Chapter Troubleshooting, Installation Test

CHAPTER 6

TROUBLESHOOTING

This chapter contains instructions for using LANVIEW LEDs to troubleshoot physical layer network problems.

6.1INSTALLATION TEST

After connecting the SEH to the network, verify that packets pass between all Ethernet devices connected to the SEH and any other devices connected to the network. If there is a problem with any of the attached devices, check the link as follows:

1.Check that the LNK LED, if applicable, for the port is on. If the LED is off, perform each of the following steps until it is on.

a.Check that the 100BASE-T device at the other end of the twisted pair segment is powered up.

b.Verify that the connector on the twisted pair segment has the proper pinouts. Refer to Chapter 3, for the pin assignments for twisted pair connectors.

c.For the EPIM-100FX or EPIM-100FMB, check that the TX and RX strands are properly connected.

d.Check the cable for continuity. Several tools are available for this test, depending on the media used.

e.Check that the twisted pair segments or fiber optic segments meet the cable specifications as described in Chapter 3.

SEH100TX User’s Guide 6-1