Whether optical-layer ASON services are rerouted after an OBU board is removed and re-inserted

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Question:
If frontline engineers remove an OBU board from the OSN 6800 V100R007C02SPC200 in the optical-layer ASON network, and the corresponding FIU board does not report any alarms, will ASON services on the FIU board be rerouted?

The OMS_TEL_DOWN alarm is generated on the TE link xxx as follows:
OMS_TEL_DOWN CR start 2013-11-18 14:29:30+05:30 None NSA TEL Node=172.16.0.113,TE LinkID=0x8;,Sub-shelf=0,Board=2,Port=1,Error=0x2;

Answer:
In versions earlier than V100R007C00, after an OBU board is removed, ASON services on the corresponding FIU board are not rerouted. Since V100R007C00, the offline alarms of an OBU board are transferred to the corresponding FIU board. As a result, ASON services on the FIU board are rerouted. In conclusion, after an OBU board is removed from OSN 6800 V100R007C02SPC200, ASON services are rerouted.

Suggestion and conclusion:
By default, in versions earlier than V100R007C00, optical-layer ASON services are rerouted on the condition that the FIU board reports the MUT_LOS or BD_STATUS alarm. Since V100R007C00, optical-layer ASON services are also rerouted on the condition that boards on the line dimension report the BD_STATUS alarm. These boards can be OA boards, and multiplexer/demultiplexer boards.

Other related questions:
Trigger alarms of optical-layer service rerouting
Optical-layer service rerouting can be triggered when alarms such as R_LOS, OTUk_LOF, and OTUk_LOM are reported only on OTU boards.

Removal and re-insertion of a fan on OSN 6800
Remove two screws and then remove the fan. The offline duration of a fan cannot exceed 3 minutes.

Whether there are restrictions on the number of TE links on an optical-layer ASON network or an electrical-layer ASON network
On an optical-layer ASON network, a TE link can only be created between FIU boards. The quantity of TE links is determined by the NE scale of the network. Generally, only a few TE links are configured on the network. On an electrical-layer ASON network, ODUk links of different levels can be created based on line board types. Generally, a large number of TE links are configured on the network. An electrical-layer ASON network has far more TE links than an optical-layer ASON network. More links on a network will consume more network resources. Therefore, it is required that an electrical-layer ASON network be smaller than an optical-layer ASON network.

Restrictions on a network for which both optical-layer ASON and electrical-layer ASON are configured
Optical-layer ASON and electrical-layer ASON can be configured on the same network but they cannot be configured on the same NE.

Whether OLP boards can be used in electrical-layer ASON
Huawei OTN ASON solution can be implemented in two ways: optical-layer ASON (OTN_O) and electrical-layer ASON (OTN_E). Optical-layer ASON achieves service grooming at the OCh wavelength level, while electrical-layer ASON achieves service grooming at the ODUk sub-wavelength level.

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