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C-59
Troubleshooting
Diagnostic Tools
Diagnostic Tools
Diagnostic Features
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. Refer to Chapter 10, “Port Status and Configuration”.
Feature
Default
Menu
CLI
Web
Port Auto negotiation
n/a
n/a
n/a
n/a
Ping Test
n/a
—
Link Test
n/a
—
Display Config File
n/a
—
Admin. and Troubleshooting
Commands
n/a
—
—
Factory-Default Config
(Buttons)
—
—
Port Status
n/a
pages page
3500-5400-6200-8200-MCG-Jan08-K_13_01.book Page 59 Monday, January 28, 2008 10:04 AM