9000

80 Chapter 5

Troubleshooting

Table 5-3 HP HSC FDDI Adapter LED States (Port B)

* indicates that this LED will be Solid if a link is detected, otherwise it

will be Off. The state of this LED should be ignored if the card is in the

Failure state.

NOTE Port A of the HP HSC FDDI adapter has only one LED. This LED is

Solid if a link is detected, otherwise it is Off.

Performance Troubleshooting

This section is intended to provide system administrators or advanced

users with detailed information on how to troubleshoot

performance-related problems with the HP EISA FDDI/9000 or HSC

FDDI/9000 products. A few key terms are deﬁned below to help in

understanding the troubleshooting information:

Key Terms

Transmit Threshold: This value determines how many bytes must be

in the FDDI transmit FIFO before transmission of the bits onto the

FDDI cable will begin.

Transmit Underrun: A transmit underrun error occurs when the FDDI

transmitter encounters an empty transmit FIFO during the

transmission of bits onto the FDDI cable.

LEDs by Colors

Card States

Green (1) Green (2) Yellow (3) Yellow (4)

* Solid Solid Off Hardware power-on diagnostics

completed; driver not yet

initialized

* Blink Off Off Connecting to ring (local cables

may not be connected or cables

may not be connected at remote

end)

Solid Blink Solid Off Ring connected (normal

function)

* Off Off Solid Failure