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APPENDIX
Intel
®
NetStructure™ 470T and 470F Switches User Guide
Troubleshooting/FAQs
How can I set the speed or duplex on individual ports?
Normally the switch handles all connections automatically, but you can
force speed or duplex on the 470T in order to accommodate devices that
don’t support autonegotiation. Use Local Management or Web Device
Manager to configure the ports.
I’ve connected the cable but the link LED is off. Why?
• Remove the cable and plug it in again. Wait up to six seconds for a link.
• Check the speed and duplex settings on the PC’s network adapter.
• The cable is defective.
I have a cable that worked with a 100Mbps device, but it’s
not working with a 1000Mbps device. Why not?
The cable may not be wired correctly for the 1000Mbps device. For more
information, See “Connection Guidelines” and “Straight-Through vs.
Crossover Cables” in Chapter 1.
The link LED for the port is on but I don’t see any activity
when I try to ping a device on that port. Why?
• The port could be disabled through management. Use Local
Management or Web Device Manager to enable the port and try pinging
the device again.
• The port could be partitioned (auto-disabled). This condition is usually
caused by a malfunctioning network adapter or an overloaded network
segment. The switch will wait until it stops receiving collisions and
then clear the port automatically.
• The device attached to the port may be assigned to a different VLAN.
After I connect to Local Management I see a blank screen.
How can I fix this?
• Make sure you are using a null modem cable (included).
• Check the settings in your terminal program. They must be set to
9600 baud, 8 data bits, No parity, 1 stop bit, and No flow control.
• Try pressing c + R to force the screen to refresh.