B-6
Cisco ONS 15600 SDH Reference Manual, Release 9.0
78-18400-01
Appendix B Administrative and Service States
B.3.2 Port and Cross-Connect Service State Transitions
B.3.2 Port and Cross-Connect Service State Transitions
lists the port and cross-connect service state transitions. Port states do not impact
cross-connect states with one exception. A cross-connect in the Unlocked-disabled,automaticInService
service state cannot transition autonomously into the Unlocked-enabled service state until the parent port
is in the Unlocked-enabled service state.
You cannot transition a port from the Unlocked-enabled service state to the Locked-enabled,disabled
state. You must first transition the port to the Locked-enabled,maintenance state. Once a port is in the
Locked-enabled,maintenance state, the NODE.general.AllowServiceAffectingPortChangeToDisabled
default setting of TRUE allows you to put a port in Locked-enabled,disabled even if the following
conditions exist:
•
The port is a timing source.
•
The port is used for line, section, or tunneling data communicatiosn channel (DCC).
•
The port supports 1+1 protection or multidirectional multiplex section-shared protection ring
(MS-SPRing).
•
Cross-connects are present on the port.
•
Overhead connections or overhead terminations are in use (such as express orderwire, local
orderwire, or user data channels [UDCs]).
To change this behavior so that you cannot put a port in Locked-enabled,disabled if any of these
conditions exist, set the NODE.general.AllowServiceAffectingPortChangeToDisabled default setting to
FALSE. For the procedure to change node defaults, refer to the “Maintain the Node” chapter in the
Cisco ONS 15600 SDH Procedure Guide.
Note
Deleting a port or cross-connect removes the entity from the system. The deleted entity does not
transition to another service state.
Table B-5
ONS 15600 SDH Port and Cross-Connect Service State Transitions
Current Service State
Action
Next Service State
Unlocked-enabled
Put the port or cross-connect in
the Locked,maintenance
administrative state.
Locked-enabled,maintenance
Put the port or cross-connect in
the
Unlocked,automaticInService
administrative state.
Unlocked-disabled,automaticInService
(Cross-connect only) Put the
cross-connect in the
Locked,disabled administrative
state.
Locked-enabled,disabled
Locked-enabled,disabled & outOfGroup
for a VCAT cross-connect