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Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.11.2 DS3i-N-12 Card Does Not Report MS-AIS From External Equipment
View the State of Circuit Nodes
Step 1 Click the Circuits tab.
Step 2 From the Circuits tab list, select the circuit with the OOS-PARTIAL status condition.
Step 3 Click Edit. The Edit Circuit window appears.
Step 4 In the Edit Circuit window, click the State tab.
The State tab window lists the Node, CRS End A, CRS End B, and CRS State for each of the nodes in
the circuit.
1.11.2 DS3i-N-12 Card Does Not Report MS-AIS From External Equipment
Symptom A DS3i-N-12 card does not report MS-AIS from the external equipment/line side.
Possible Cause The card is functioning as designed.
Recommended Action This card terminates the port signal at the backplane, so VC MS-AIS is not
reported from the external equipment/line side. DS3i-N-12 cards have DS3 header monitoring
functionality, which allows you to view PMs on the DS3 path. Nevertheless, you cannot view
MS-AIS on the VC path. For more information on the PM capabilities of the DS3i-N-12 cards, refer
to the Cisco ONS 15454 SDH Reference Manual Chapter 3, “Electrical Cards.”
1.11.3 STM-1 and DCC Limitations
Symptom Limitations to STM-1 and DCC usage.
Possible Cause STM-1 and DCC have limitations for the ONS 15454 SDH.
Recommended Action For an explanation of STM-1 and DCC limitations, refer to the DCC Tunnels
section of the Cisco ONS 15454 SDH Procedure Guide Chapter 5, “Turn Up Network.”
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