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Release Notes

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Release Notes for Cisco ONS 15454 SDH Release 4.1.3
OL-4984-01
Caveats
MS-SPRing Functionality
DDTS # CSCec32195
Rarely, in a two fiber MS-SPRing with STM64 span cards and a VC3 circuit running across DS3I drop
cards, if you upgrade to Release 4.1.3 the TU-LOP alarm might be falsely reported against the STM64
trunk card even though traffic is passing fine. It is not known when or when this issue will be resolved.
DDTS # CSCec34856
When you create a circuit over MS-SPRing or DRI, the resource usage in the Maintenance >
Cross-Connect > Resource Usage tab will display the incorrect VC# for the circuit you created. Use the
Circuit Edit > Monitors window to view the correct VC#. This issue will be resolved in Release 4.6.
DDTS # CSCeb40296
IPPM counts for PCA (extra) traffic will not be displayed in CTC if the MS-SPRing switches back to
working after a failure recovery. To see this issue, perform the following steps in a two-fiber or four-fiber
MS-SPRing configuration.
Step 1 Create a PCA circuit.
Enable IPPM on all OCn cards for this PCA circuit.
Step 2 Issue a Forced Switch Ring (FS-R) in CTC on the add or drop node. The MS-SPRing switches.
Step 3 View the PCA path level counts shown in CTC.
Step 4 Clear the Forced Switch Ring in CTC. The MS-SPRing switches back to working; however, IPPM path
level counts for PCA circuits are not shown.
To recover from this situation, lock out the ring by issuing the LockoutOfProtection (LK-S) command
on both east and west for all nodes in the ring. Reboot the OCn card that is not showing PCA path level
counts. This procedure needs to be performed whenever there is a switch in BLSR configuration. This
issue will be resolved in Release 4.6.
DDTS # CSCea81000
In a two-fiber or four-fiber MS-SPRing, MS-RFI is not reported for an LOS or LOF with a ring lockout
in place on a different span. This issue will be resolved in Release 6.0.
DDTS # CSCeb09217
Circuit states are not updated after a span update. If you update a four node OC-12 two-fiber MS-SPRing
to a four node OC-192 two-fiber BLSR, the previous PCA circuits should be shown as two-fiber
MS-SPRing protected, but they are shown as “UNKNOWN” protected. If you relaunch CTC this
situation is corrected. This issue will be resolved in Release 5.0.