9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. VI-A-9
For a typical RAC/RAC ring node the node license must support:
• The two RAC positions and their required (configured) capacity.
• Capacity for any additional RAC or RACs that connect to/from the ring.
For information on Licensing screen operation and the licensing process, refer to
9500 MXC User Manual, Volume IV, Chapter 4.
Protection
For a ring configuration two RACs may be paired for east-west operation, or a
RAC and a DAC 155oM. The RAC/DAC 155oM pairing is used where fiber
linking is required to close a ring.
The Configuration > Protection screen is used to set the RAC partnering required
for east-west ring operation.
The Protection screen provides:
• Location (slot number) of installed RAC and DAC 155oM plug-ins
• Identification and selection of allowable RAC/RAC or RAC/DAC 155oM
partnering for protected operation.
• Selection of the protection type; Ring.
• Selection of East and West designations.
Refer to:
• Ring Protection Configuration and Operation Rules on page A-9
• The Protection Screen on page A-10
• Configuring Ring Protection on page A-11
Ring Protection Configuration and Operation Rules
• Selecting two RACs, or a RAC and a DAC 155oM, is the starting point for
configuring a protected link. It is not possible to configure a protected link
without both partner plug-ins installed.
• Partner plug-ins will only be permitted within the slot conventions for the INU
and INUe. For details refer to 9500 MXC Node Slot Numbering Conventions,
Volume IV, Chapter 1.
• Once a protected link is configured and saved (Sent), one or both RACs may be
withdrawn without affecting the saved configuration.
Ring-specific configuration data for a DAC 155oM will be provided in a later
release of this appendix. Comprehensive configuration data, including ring
applications, is included in CT > Node and Terminal Plug-ins, and in CT >
Protection.
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