NEC IP8800/S3600, IP8800/S6600, IP8800/S2400 Failure Analysis Method for Troubles on 10GBASE-R

3.Troubleshooting Functional Failures in Operation

2.Isolating the problem according to the failure analysis method

Isolate the problem according to the failure analysis method listed below.

Table 3-11: Failure Analysis Method for Troubles on 10GBASE-R

No.		Troubleshooting Steps	Problem	Action
1	According to the failure		Line quality on	Check the type of fiber optics. For the fiber optics type, see "Hardware
	statistical information displayed		receiving side is	Installation 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
	•	Signal detect errors
				surfaces of the cable are dirty. If they are dirty, remove the dirt.
	•	LOS of sync
		[IP8800/S6700]		Check to see if the transceiver is connected correctly.
		[IP8800/S6600]
				For the transceiver, follow the segment standard on the remote system.
		[IP8800/S6300]
	•	HI_BER		Check to see if the optical level is correct. For the optical level, see
		[IP8800/S6700]		"Hardware Installation Guide."
		[IP8800/S6600]
				Perform the line test on this system and confirm that there is no problem
		[IP8800/S6300]
	•	LF		in the receiving function. See the execution results of the no test
		[IP8800/S6700]		interfaces command and follow the indicated actions. For the test
		[IP8800/S6600]		type to be specified, see "6.1 Testing Line."
		[IP8800/S6300]
2	According to the receiving error		Line quality on	Check the type of fiber optics. For the fiber optics type, see "Hardware
	statistical information displayed		receiving side is	Installation 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.
				For the transceiver, 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."

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