NEC IP8800/S6700, IP8800/S6600 manual Troubleshooting for Failed 10BASE-T/100BASE-TX/1000BASE-T

3. Troubleshooting Functional Failures in Operation

Table 3-9: Troubleshooting for Failed 10BASE-T/100BASE-TX/1000BASE-T

No.		Troubleshooting Steps	Problem	Action
1	According to the failure		Line quality is	Check to see if the cable type is correct. For the fiber optics type, see
	statistical information		degraded.	"Hardware Installation Guide."
	displayed by the show
				Check to see if MDI-X is selected for pin mapping in the case of the
	interfaces command,
				following:
	check to see if the statistical
				• The port setting is fixed.
	information below is
	counted for the port. If			• The port setting is auto negations and auto MDIX function is
	counted, see "Problem" and			disabled.
	"Action" columns.			Check the cable length. For the cable length, see "Hardware Installation
	•	Link down
				Guide."
				Check to see if the cable is connected correctly.
				Replace with the connection interface supported by this system. For the
				connection interfaces supported by this system, see "Configuration
				Settings."
				Perform the line test on this system and confirm that there is no problem
				in the receiving function. See the execution results of the no test
				interfaces (Ethernet) command and follow the indicated actions.
				For the test type to be specified, see "6.1 Testing Line."
2	According to the receiving		Line quality is	Check to see if the cable type is correct. For the fiber optics type, see
	error statistical information		degraded.	"Hardware Installation Guide."
	displayed by the show
				Check to see if MDI-X is selected for pin mapping in the case of the
	interfaces command,
				following:
	check to see if the statistical
				• The port setting is fixed.
	information below is
	counted for the port. If			• The port setting is auto negations, and auto MDIX function is
	counted, see "Problem" and			disabled.
	"Action" columns.			Check the cable length. For the cable length, see "Hardware Installation
	•	CRC errors
				Guide."
	•	Symbol errors
				Check to see if the cable is connected correctly.
				Replace with the connection interface supported by this system. For the
				connection interfaces supported by this system, see "Configuration
				Settings."
				Perform the line test on this system and confirm that there is no problem
				in the receiving function. See the execution results of the no test
				interfaces command and follow the indicated actions. For the test
				type to be specified, see "6.1 Testing Line."
3	According to the failure		Pin mapping of the	Correct the pin mapping. For pin mapping, see the manual
	statistical information		cable is not correct.	"Configuration Settings."
	displayed by the show
	interfaces command,
	check to see if the statistical
	information below is
	counted for the port. If
	counted, see "Problem" and
	"Action" columns.
	• MDI cross over changed
4	Check the line type/line		An incompatible	Check to see if the cable type is correct. For the fiber optics type, see
	speed for the port according		cable is used.	"Hardware Installation Guide."
	to the "Port detail"
			The values set for	Use the same values as the remote system in configuration commands
	information generated by the
			configuration	speed and duplex.
	show interfaces
	command.		commands speed
	If the line type/line speed is		and duplex are
	not correct, see the		incompatible with
			the target system.
	"Problem" and "Action"
	columns.

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