Intel A21721-001 Gigabit Ethernet Modules, Symptom, Possible Cause Course of Action, Use ifconfig

C H A P T E R 2 Gigabit Ethernet Modules

Symptom Possible Cause Course of Action

Link LED is not lit. Dirty optics.

Bad cable or incorrect cable adapter orientation.

Try different ports and reverse the cable (if possible). Replace the cable. If replacing the cable fails to help, clean the optics.

	Auto-negotiation	Change auto-
	mode does not agree	negotiation mode for
	with remote link	either link partner so
	partner.	that they agree.
Active Link, cannot	Management	Use ifconfig
communicate with	interface not IP	command, BOOTP
other stations from	configured.	or RARP to
the user console.		configure sw1
		interface.
Active Link, cannot	Invalid VLAN	Verify the VLAN
communicate with	configuration.	configuration.
station on a non-
Gigabit Ethernet port
from a station on a
Gigabit Ethernet port.

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