10-6
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter10 Circuits and Tunnels
10.2.2 Circuit States
•If all cross-connects in a circuit are in the Locked-enable d,maintenance;
Unlocked-disabled,automaticInService; or Locked-enabled,disabled service state, the circuit
service state is Locked.
•Partial is appended to the Locked circuit service state when circuit cross-connects state are mixed
and not all in the Unlocked-enabled service state. The Locked-partial state can occur during
automatic or manual transitions between states. The Locked-partial service state can appear during
a manual transition caused by an abnormal event such as a CTC crash or communication error, or if
one of the cross-connects could not be changed. Refer to the Cisco ONS 15454 SDH
Troubleshooting Guide for troubleshooting procedures. The Locked-partial circuit state doe s not
apply to OCHNC circuit types.
The state of a VCAT circuit is an aggregate of its member circuits. An In Group member has
cross-connects in the Unlocked-enabled; Unlocked-disabled,automaticInService; or
Locked-enabled,maintenance service states. An Out of Group member has cross-connects in the
Locked-enabled,disabled; or Locked-enabled,outOfGroup service states. You can view whether a VCAT
member is In Group or Out of Group in the VCAT State column on the Edit Circuits window.
•If all member circuits are Unlocked, the VCAT circuit is Unlocked.
•If all In Group member circuits are Locked, the VCAT circuit state is Locked.
•If no member circuits exist or are all Out of Group, the state of a VCAT circuit is Locked.
•A VCAT circuit is Locked-partial when In Group member states are mixed and not all in the
Unlocked state.
You can assign a state to circuit cross-connects at two points:
•During circuit creation, you can set the state on the Create Circuit wizard.
•After circuit creation, you can change a circuit state on the Edit Circuit window or from the
Tools> Circuits > Set Circuit State menu.
During circuit creation, you can apply a service state to the drop ports in a circuit; however, CTC does
not apply a requested state other than Unlocked-enabled to drop ports if:
•The port is a timing source.
•The port is provisioned for orderwire or tunnel orderwire.
•The port is provisioned as a DCC or DCC tunnel.
•The port supports 1+1 or multiplex section-shared protection ring (MS-SPRing).
Circuits do not use the soak timer, but ports do. The soak period i s the amount of time that the port
remains in the Unlocked-disabled,automaticInService service state after a signal is continuously
received. When the cross-connects in a circuit are in the Unlocked-disabled,automaticInService service
state, the ONS15454 SDH monitors the cross-connects for an error-free signal. It changes the state of
the circuit from Locked to Unlocked or to Locked-partial as each cross-connect assigned to the circuit
path is completed. This allows you to provision a circuit using TL1, verify its path continuity, and
prepare the port to go into service when it receives an error-free signal for the time specified in the port
soak timer.
To find the remaining port soak time, choose the Maintenance > AINS Soak tabs in card view and click
the Retrieve button. If the port is in the Unlocked-disabled,automaticInService state and has a good
signal, the Time Until IS column shows the soak count down status. If the port is
Unlocked-disabled,automaticInService and has a bad signal, the Time Until IS column indicates that the
signal is bad. You must click the Retrieve button to obtain the latest time value.
For more information about cross-connect states, see Appendix B, “Administrative and Service States.”