Diagnostic tools, Port auto-negotiation, Ping and link tests – IronPort Systems 4108GL User Manual
Page 431: Port auto-negotiation -19, Ping and link tests -19
18-19
Troubleshooting
Diagnostic Tools
Tro
ubl
e
shoo
tin
g
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. See Chapter 11, “Optimizing Port Usage Through Traffic Con-
trol and Port Trunking”.
Ping and Link Tests
The Ping test and the Link test are point-to-point tests between your switch
and another IEEE 802.3-compliant device on your network. These tests can
tell you whether the switch is communicating properly with another device.
Feature
Default
Menu
CLI
Web
Port Autonegotiation
n/a
n/a
n/a
n/a
PingTest
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 11-2
and 11-5
pages 11-2
and 11-6
pages 11-2
and 11-5