SMC Networks SMC7904WBRA - Manual (Page 123)

T
ROUBLESHOOTING
A-2
LED Indicators
Link LED is Off • Verify that the Barricade and attached device are
powered on.
• Be sure the cable is plugged into both the Barricade
and the corresponding device.
• Verify that the proper cable type is used and that its
length does not exceed the specified limits.
• Be sure that the network interface on the attached
device is configured for the proper communication
speed and duplex mode.
• Check the adapter on the attached device and cable
connections for possible defects. Replace any
defective adapter or cable if necessary.
Network Connection Problems
Cannot ping the
Barricade from
the attached
LAN
• Verify that the IP addresses are properly configured.
For most applications, you should use the Barricade’s
DHCP function to dynamically assign IP addresses to
hosts on the attached LAN. However, if you manually
configure IP addresses on the LAN, verify that the
same network address (network component of the IP
address) and subnet mask are used for both the
Barricade and any attached LAN devices. See “Ping
Utility” on page 4-70 for details.
• Be sure the device you want to ping (or from which
you are pinging) has been configured for TCP/IP.
Troubleshooting Chart
Symptom Action