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Release Notes

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Release Notes for Cisco ONS 15454 SDH Release 4.1.3
OL-4984-01
New Features and Functionality
SNCP Functionality
DDTS # CSCec04550
In a SNCP configuration, upon detecting a double-path failure with UNEQ-P, the UNEQ-P on the protect
path is not reported. This issue is resolved in Release 4.1.3.
DDTS # CSCec14995
In a non-revertive SNCP configuration, when a double failure is detected on both paths with UNEQ-P
or AIS-P, upon clearing the protect path defect, the UNEQ-P or AIS-P alarm may remain stuck on the
working path for the node. The most reliable way to remove the alarm is a TCC2 side switch. This issue
is resolved in Release 4.1.3.
New Features and Functionality
This section highlights new features and functionality for Release 4.1.x. For detailed documentation of
each of these features, consult the user documentation.
New Software Features and Functionality
CTC Additional Support for DS3i-N-12
As of Release 4.1.3 the column “Path Width” has been added to Alarms, Conditions and History panes.
The Path Width column provides the width of the VC4 path on which the alarm is raised or cleared, in
units of VC4 (how many VC4s wide the path is). The path width only applies to the “VC4-” alarmable
object type. For any non-VC4 object, the column remains blank.
ML-Series Resilient Packet Ring
RPR (Resilient Packet Ring) is a new protocol available on the ML-Series cards enabling you to use SDH
bandwidth more efficiently, with 50 ms recovery times.
Basic Feature Description
RPR for the ML-Series line cards provides a set of enhancements to the performance of any such card
running the Release 4.1.x. These improvements include:
RPR for the ML-Series line cards allows new deployment applications for all cards running Release
4.1.x. These improvements include:
• Better SDH bandwidth utilization compared to an STP controlled ring topology.
• Non-SDH fail-over mechanism with sub 50-millisecond convergence for fiber cuts, restores, node
failures and inserting new nodes.
• Ability to perform ML-Series QOS (quality of service) features on all SDH traffic (pass-through,
drop, and add).