Keywords: WDM, OptiX OSN 6800, OptiX OSN 8800 T16, OptiX OSN 8800 T32
Summary:
When TN11HSC is upgraded to V100R007C00SPC200, V100R007C00SPC300, or
V100R007C02SPC200, there is a low probability that it fails to go online in an
OptiX OSN 8800 T16 subrack, OptiX OSN 8800 T32/T64 slave subrack, or OptiX OSN 6800
slave subrack. When the fault occurs, the OSC performance is affected, possibly causing the NE
to be unreachable by the NMS.
[Problem Description]
Trigger conditions:
1. The TN11HSC1 board is used in an OptiX OSN 8800 T16 subrack, OptiX OSN 8800 T32/T64
slave subrack, or OptiX OSN 6800 slave subrack.
2. The NE software is V100R007C00SPC200, V100R007C00SPC300, or V100R007C02SPC200.
3. A warm or cold reset is performed on the board.
Symptom:
The TN11HSC1 board occasionally fails to go online in an OptiX OSN 8800 T16 subrack,
OptiX OSN 8800 T32/T64 slave subrack, or OptiX OSN 6800 slave subrack and this board is
unreachable by the NMS when the NE is upgraded to V100R007C00SPC200, V100R007C00SPC300,
or V100R007C02SPC200.
Identification method:
1. Check whether the TN11HSC1 board is used in an OptiX OSN 8800 T16 subrack,
OptiX OSN 8800 T32/T64 slave subrack, or OptiX OSN 6800 slave subrack.
4. Query the version information and check whether the NE version is V100R007C00SPC200,
V100R007C00SPC300, or V100R007C02SPC200 and whether the board version is 3.45.
[Root Cause]
The memory of the TN11HSC1 board is insufficient. When this board is used in an above-mentioned
subrack, this board applies more memory space. Therefore, the memory application during the board
software initialization occasionally fails, causing a board initialization failure. As a result, the board
suspends in the BIOS state.
[Impact and Risk]
1. When an NE on the live network is upgraded to the risky version, if the subrack is managed through
the OSC on the TN11HSC1 board, the NE will be occasionally unreachable by the NMS and fail to be
upgraded to the target version.
5. When an NE on the live network is upgraded to the risky version, if the subrack is managed through
other channels, the NE will be occasionally unreachable by the NMS and fail to be upgraded to the target version.
6. If the NE on the live network is already of a risky version, the TN11HSC1 board will occasionally fail to
go online when it is inserted into an above-mentioned subrack and be unreachable by the NMS.
[Measures and Solutions]
Recovery measures:
1. Upgrade the NE to V100R007C00SPC300 and load the V100R007C00SPH301 hot patch.
7. Remove the TN11HSC1 board and insert it to an OptiX OSN 8800 T32/T64 or OptiX OSN 6800
master subrack. Then load the V100R007C00SPH301 hot patch to the subrack.
8. Insert the TN11HSC1 board that has been loaded with the hot patch back to the OptiX OSN 8800 T16
subrack, OptiX OSN 8800 T32/T64 slave subrack, or OptiX OSN 6800 slave subrack.
Workarounds:
None
Preventive measures:
Upgrade the NE to V100R007C02SPC300 or a later mainstream version.
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