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Diagnostic Tools
Diagnostic Features
Feature Default Menu CLI Web
Port Auto negotiation n/a n/a n/a n/a
Ping Test n/a — page C-29 page C-28
Link Test n/a — page C-29 page C-28
Display Config File n/a — page C-31 page C-31
Admin. and Troubleshooting n/a — page C-33 —
Commands
Factory-Default Config page C-34
(Buttons)
— page C-34 —
Port Status n/a pages B-8
and B-9
pages B-8 and
B-9
pages B-8 and
B-9
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 mode.Auto
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 9, “Optimizing Traffic Flow with Port Controls,
Port Trunking, and Filters”.
C-26