Sd (Trunk) - Cisco NCS 2000 series Troubleshooting Manual

Alarm Troubleshooting
• SYNCPRI , on page 410
• SYNCSEC , on page 411
• SYSBOOT , on page 413
Step 2 Reestablish a primary and secondary timing source according to local site practice. If none exists, refer to the Change
Node Settings chapter in the Configuration guide.
If the condition does not clear, log into the Technical Support Website at
for more information or call Cisco TAC (1 800 553-2447).

SD (TRUNK)

Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: TRUNK
A Signal Degrade (SD) condition on the trunk occurs when the quality of an optical signal to the
MXP_2.5G_10G, TXP_MR_10G, TXP_MR_2.5G, TXP_MR_10E, TXP_MR_10E_C, TXP_MR_10E_L,
TXPP_MR_2.5G, GE-XP, 10GE-XP, and ADM-10G card has BER on the incoming optical line that passes
the signal degrade threshold. The alarm applies to the card ports and the trunk carrying optical or electrical
signals to the card.
Signal degrade is defined by Telcordia as a soft failure condition. SD and SF both monitor the incoming BER
and are similar, but SD is triggered at a lower BER than SF. The BER threshold on the system is
user-provisionable and has a range for SD from 1E9 dBm to 1E5 dBm.
Clear the SD (TRUNK) Condition
SUMMARY STEPS
1. Ensure that the fiber connector for the card is completely plugged in. For more information about fiber
connections and card insertion, refer to the Turn Up a Node chapter in the Configuration guide.
2. If the BER threshold is correct and at the expected level, use an optical test set to measure the power level
of the line to ensure it is within guidelines. For specific procedures to use the test set equipment, consult
the manufacturer.
3. If the optical power level is good, verify that optical receive levels are within the acceptable range.
4. If receive levels are good, clean the fibers at both ends according to site practice. If no site practice exists,
complete the procedure in the Maintain the Node chapter in the Configuration guide.
5. If the condition does not clear, verify that single-mode fiber is used.
6. If the fiber is of the correct type, verify that a single-mode laser is used at the far-end node.
7. Clean the fiber connectors at both ends for a signal degrade according to site practice.
8. Verify that a single-mode laser is used at the far end.
9. If the problem does not clear, the transmitter at the other end of the optical line could be failing and require
replacement. Refer to the Physical Card Reseating, Resetting, and Replacement, on page 451
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
http://www.cisco.com/c/en/us/support/index.html
SD (TRUNK)
section.
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