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2.6.42 EOC
2.6.42 EOC
The SDH DCC Termination Failure alarm occurs when the ONS 15600 SDH loses its DCC. Although
this alarm is primarily SDH, it can apply to dense wavelength division multiplexing (DWDM) in other
platforms.
The Regenerator-Section DCC (RS-DCC) consists of three bytes, D1 through D3, in the SDH overhead.
The bytes convey information about operation, administration, maintenance, and provisioning
(OAM&P). The ONS 15600 SDH uses the DCC on the SDH Section layer to communicate network
management information.
Invisible laser radiation could be emitted from the end of the unterminated fiber cable or connector.
Warning
Do not stare into the beam directly with optical instruments. Viewing the laser output with certain
optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of
100 mm could pose an eye hazard. Statement 1056
Warning
Use of controls, adjustments, or performing procedures other than those specified may result in
hazardous radiation exposure. Statement 1057
If a circuit shows an incomplete state when this alarm is raised, the logical circuit is in place. The circuit
Note
is able to carry traffic when the connection issue is resolved. You do not need to delete the circuit when
troubleshooting this alarm.
Clear the EOC Alarm
Step 1
If the
procedure on page
If the
Step 2
procedure on page
If the alarm does not clear on the reporting node, verify the physical connections between the cards and
Step 3
that the fiber-optic cables are configured to carry RS-DCC traffic. If they are not, correct them. For more
information about fiber connections and terminations, refer to the "Install Cards and Fiber-Optic Cable"
chapter in the Cisco ONS 15600 SDH Procedure Guide.
Caution
Always use the supplied electrostatic discharge wristband when working with a powered
ONS 15600 SDH. Plug the wristband cable into the ESD jack located on the lower-right edge of the shelf
assembly.
If the physical connections are correct and configured to carry DCC traffic, ensure that both ends of the
fiber span have fully operational (Unlocked-enabled) ports. Verify that the SRV LED on each STM-N
card is green.
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
2-42
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
Logical Object: STMN
"LOS (STMN)" alarm on page 2-86
2-86. (This procedure is also used for EOC.)
"MS-EXC" condition on page 2-99
2-98. (This procedure is also used for EOC.)
is also reported, complete the
is reported, complete the
Chapter 2 Alarm Troubleshooting
"Clear the LOS (STMN) Alarm"
"Clear the MS-DEG Condition"
July 2010
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Troubleshooting
