Circuit States - Cisco ONS 15600 Reference Manual

Chapter 7 Circuits and Tunnels
Table 7-2
Status
PENDING_MERGE
DROP_PENDING

7.2.3 Circuit States

The circuit service state is an aggregate of the cross-connect states within the circuit.
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You can assign a service state to circuit cross-connects at two points:
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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 IS-NR to drop ports if:
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Circuits do not use the soak timer, but ports do. The soak period is the amount of time that the port
remains in the OOS-AU,AINS service state after a signal is continuously received. When the
cross-connects in a circuit are in the OOS-AU,AINS service state, the ONS 15600 monitors the
cross-connects for an error-free signal. It changes the state of the circuit from OOS to IS or to
OOS-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. For example, when assigning
the IS,AINS administrative state to cross-connects in STS circuits, the circuit source and destination
ONS 15600 Circuit Status (continued)
If all cross-connects in a circuit are in the IS-NR service state, the circuit service state is
In-Service (IS).
If all cross-connects in a circuit are in an OOS service state, such as OOS-MA,MT; Out-of-Service
and Autonomous, Automatic In-Service (OOS-AU,AINS); or Out-of-Service and
Management, Disabled (OOS-MA,DSBLD) service state, the circuit service state is
Out-of-Service (OOS).
PARTIAL is appended to the OOS circuit service state when circuit cross-connects state are mixed
and not all in IS-NR. The OOS-PARTIAL state can occur during automatic or manual transitions
between states. OOS-PARTIAL 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 15600 Troubleshooting Guide for troubleshooting procedures.
During circuit creation, you can set the state on the Create Circuit wizard.
After circuit creation, you can change a circuit state in the Edit Circuit window or from the
Tools > Circuits > Set Circuit State menu.
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 BLSR.
Definition/Activity
Any new circuits created to represent an alternate path in a
topology upgrade are set to this status to indicate that it is a
temporary circuit. These circuits can be deleted if a topology
upgrade fails. For more information about topology
upgrades, see Chapter 8, "SONET Topologies and
Upgrades."
A circuit is set to this status when a new circuit drop is being
added.
Cisco ONS 15600 Reference Manual, R6.0
7.2.3 Circuit States
7-7