NEC IP8800/S6300 User Manual
3.
Troubleshooting Functional Failures in Operation
33
3.4.5
Actions 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."
2
According to the receiving error
statistical information 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.
• CRC errors
• Symbol errors
statistical information 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.
• CRC errors
• Symbol errors
Line quality on
receiving side is
degraded.
receiving side is
degraded.
Check the type of fiber optics. For the mode, see "Hardware Installation
Guide."
Guide."
Check the attenuation value if an optical attenuator is used. For the
optical level, see "Hardware Installation Guide."
optical level, see "Hardware Installation Guide."
Check the cable length. For the cable length, see "Hardware Installation
Guide."
Guide."
Check to see if the cable is connected correctly. Check to see if end
surfaces of the cable are dirty. If they are dirty, remove the dirt.
surfaces of the cable are dirty. If they are dirty, remove the dirt.
Check to see if the transceiver is connected correctly.
Use the same values as the remote system in configuration commands
speed and duplex.
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."
"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 "
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 "
."
3
According to the failure
statistical information 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. [IP8800/
S3600] [IP8800/S2400]
• TX fault
statistical information 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. [IP8800/
S3600] [IP8800/S2400]
• TX fault
Transceiver is
faulty.
faulty.
Replace the transceiver.
4
Check to see if the combination
of transceivers is valid when
using the 1 core optical cable
such as 1000BASE-BX.
of transceivers is valid when
using the 1 core optical cable
such as 1000BASE-BX.
Combination of
transceivers is
invalid.
transceivers is
invalid.
For 1000BASE-BX, use U type and D type transceivers in pairs. Check
to see if the transceiver type is correct.
to see if the transceiver type is correct.
5
According to the failure
statistical information 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.
• Long frames
statistical information 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.
• Long frames
Packets with
invalid frame
length are received.
invalid frame
length are received.
Follow the jumbo frame setting on the remote system.
6
Check to see if statistics in the
following is not counted by the
show qos queueing
command. If it is counted, see
"Problem" and "Action"
columns.
• discard_pkt
following is not counted by the
show qos queueing
command. If it is counted, see
"Problem" and "Action"
columns.
• discard_pkt
Packets are being
discarded.
discarded.
Review the system maintenance using discard control and shaper.
No.
Troubleshooting Steps
Problem
Action