Troubleshooting And Diagnostics; Baystack 303 And 304 Switch-Related Issues - Bay Networks BayStack 303 User Manual

The BayStack 303 and 304 Ethernet Switches are designed to be as simple and
reliable as possible. Occasionally, problems may arise that are largely associated
with two areas: problems related to the BayStack switches and problems related to
the installation.

BayStack 303 and 304 Switch-related Issues

The BayStack switches have a powerful set of system diagnostics that check all
internal resources of a switch whenever it is turned on. After the master core
processor (management processor) has tested itself, each port is tested in
sequence. The switch attempts to transfer Ethernet packets only if all diagnostic
tests complete without errors.
Warning: To avoid bodily injury from hazardous electrical current, never
remove the top cover of the device. There are no user-serviceable components
inside.
The following switch-related issues that are common are discussed in this section:
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893-01010-A

Troubleshooting and Diagnostics

Autonegotiation
MDI and MDI-X connections
Chapter 4
4-1