Troubleshooting
Diagnostic Tools
server, ensure that the server’s Syslog application is configured to accept
the “debug” severity level. (The default configuration for some Syslog
applications ignores the “debug” severity level.)
■ A reboot temporarily suspends Syslog logging. After a reboot, the
switch suspends configured Syslog logging for 30 seconds.
Diagnostic Tools
Diagnostic Features
Feature Default Menu CLI Web
Port Autonegotiation n/a n/a n/a n/a
Ping Test n/a — page C-35 page C-34
Link Test n/a — page C-35 page C-34
Display Config File n/a — page C-37 page C-37
Admin. and Troubleshooting n/a — page C-40 —
Commands
Factory-Default Config page C-44 — page C-44 —
(Buttons)
Port Status n/a pages B-9 pages B-9 pages B-9
and B-10 and B-10 and B-10
Port Auto-Negotiation
When a link LED does not light (indicating loss of link between two devices),
the most common reason is a failure of port auto-negotiation between the
connecting ports. If a link LED fails to light when you connect the switch to a
port on another device, do the following:
1. Ensure that the switch port and the port on the attached end-node are
both set to Auto mode.
2. If the attached end-node does not have an Auto mode setting, then you
must manually configure the switch port to the same setting as the end-
node port. See Chapter 10, “Port Status and Basic Configuration”.
C-32
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