Cabletron Systems SEH-32 Manuel D’Utilisation
TROUBLESHOOTING
Page 5-1
CHAPTER 5
TROUBLESHOOTING
This chapter contains instructions for using LANVIEW LEDs to
troubleshoot physical layer network problems.
troubleshoot physical layer network problems.
5.1
INSTALLATION CHECK-OUT
After you connect 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 you encounter difficulty with any
of the attached devices, check the link as follows:
between all Ethernet devices connected to the SEH and any other
devices connected to the network. If you encounter difficulty 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 not on:
LED is not on:
a.
Check that the 10BASE-T device at the other end of the twisted
pair segment is powered up.
pair segment is powered up.
b.
Verify that the connector on the twisted pair segment has the
proper pinouts. Refer to Chapter 2 for the pin assignments for
twisted pair connectors.
proper pinouts. Refer to Chapter 2 for the pin assignments for
twisted pair connectors.
For EPIM-F1/EPIM-F2/EPIM-F3 check that the TX and RX
fibers are properly connected.
fibers are properly connected.
c.
Check the cable for continuity. A variety of tools are available
for this test, depending on the media you are using.
for this test, depending on the media you are using.
d.
Check that the twisted pair segments meet cable specifications
for dB loss described in Chapter 2.
for dB loss described in Chapter 2.