NEC IP8800/S6600, IP8800/S3600, IP8800/S2400, IP8800/S6700 Actions against Troubles on 10GBASE-R

3. Troubleshooting Functional Failures in Operation

No.		Troubleshooting Steps	Problem	Action
2	According to the receiving error		Line quality on	Check the type of fiber optics. For the mode, see "Hardware Installation
	statistical information displayed		receiving side is	Guide."
	by the show interfaces		degraded.
				Check the attenuation value if an optical attenuator is used. For the
	command, check to see if the
				optical level, see "Hardware Installation Guide."
	statistical information below is
	counted for the port.			Check the cable length. For the cable length, see "Hardware Installation
	If counted, see "Problem" and			Guide."
	"Action" columns.
				Check to see if the cable is connected correctly. Check to see if end
	•	CRC errors
				surfaces of the cable are dirty. If they are dirty, remove the dirt.
	•	Symbol errors
				Check to see if the transceiver is connected correctly.
				Use the same values as the remote system in configuration commands
				speed and duplex.
				Follow the segment standard on the remote system.
				Check to see if the optical level is correct. For the optical level, see
				"Hardware Installation Guide."
				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		Transceiver is	Replace the transceiver.
	statistical information displayed		faulty.
	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. [IP8800/
	S3600] [IP8800/S2400]
	•	TX fault
4	Check to see if the combination		Combination of	For 1000BASE-BX, use U type and D type transceivers in pairs. Check
	of transceivers is valid when		transceivers is	to see if the transceiver type is correct.
	using the 1 core optical cable		invalid.
	such as 1000BASE-BX.
5	According to the failure		Packets with	Follow the jumbo frame setting on the remote system.
	statistical information displayed		invalid frame
	by the show interfaces		length are received.
	command, check to see if the
	statistical information below is
	counted for the port.
	If counted, see "Problem" and
	"Action" columns.
	•	Long frames
6	Check to see if statistics in the		Packets are being	Review the system maintenance using discard control and shaper.
	following is not counted by the		discarded.
	show qos queueing
	command. If it is counted, see
	"Problem" and "Action"
	columns.
	•	discard_pkt

3.4.5Actions against Troubles on 10GBASE-R

If a trouble occurs on 10GBASE-R, follow the procedure below to isolate the problem.

1.Checking log

For the log, see the manual "Message Log Reference."

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