Problem Description

The customer uses slot splitting to add a new R2PD1 single board in slot 21 and an N1D12B interface board in slot 3.

After completion, it is found that slot 3 reports a single board up event every 10 minutes. (Attachment)

Network element version is: 5.36.18.50

SSR2PD1 VER.C 4.13

Alert message

Circuitpack online event

Processing

This issue is a new defect in the R8 release, and there is no release to resolve it at this time.

This issue has no impact on the business. If the customer has to deal with it, it is recommended that the customer move the PD1 board in slot 21 and the D12B board in slot 3 to slot 7 and slot 4, respectively.

Root cause

Querying the master black box information, the following abnormal records are found in bb10:

7133 2010-11-25 6:58:49 0x1 LEVEL: 3, FILE: mo_Slot.cpp, LINE: 2920, ERRNO: 0x0001, Info: ITF3,0x1d8,1,7,0x0,

7134 2010-11-25 7:8:49 0x1 LEVEL: 3, FILE: mo_Slot.cpp, LINE: 2920, ERRNO: 0x0001, Info: ITF3,0x1d8,1,7,0x0,

7135 2010-11-25 7:18:49 0x1 LEVEL: 3, FILE: mo_Slot.cpp, LINE: 2920, ERRNO: 0x0001, Info: ITF3,0x1d8,1,7,0x0,

7136 2010-11-25 7:28:49 0x1 LEVEL: 3, FILE: mo_Slot.cpp, LINE: 2920, ERRNO: 0x0001, Info: ITF3,0x1d8,1,7,0x0,

7137 2010-11-25 7:38:49 0x1 LEVEL: 3, FILE: mo_Slot.cpp, LINE: 2920, ERRNO: 0x0001, Info: ITF3,0x1d8,1,7,0x0,

7138 2010-11-25 7:48:50 0x1 LEVEL: 3, FILE: mo_Slot.cpp, LINE: 2920, ERRNO: 0x0001, Info: ITF3,0x1d8,1,7,0x0,

7139 2010-11-25 7:58:50 0x1 LEVEL: 3, FILE: mo_Slot.cpp, LINE: 2920, ERRNO: 0x0001, Info: ITF3,0x1d8,1,7,0x0,.

ITF3,0x1d8,1,7,0x0 This record indicates that the host detects: board 3 (interface board d12b ) queried the corresponding processing board as board 7.

And because the slots on OSN2500 are split, the processing board corresponding to No. 3 should be No. 21pd1 single board, and the host mistakenly believes that the processing board corresponding to slot No. 3 is in slot No. 7, and the processing is abnormal.

Further understanding of the host's processing mechanism that: the host query slot 7 processing board is not online (no insertion of a single board), after nine queries (each time 1 minute) will be set to the No. 3 interface board offline; at the same time, there is a 10-second timer immediately set to the single board on the line, and then after a minute to report a single board on the event. The whole process takes 10 minutes. This results in the uptime event being reported every 10 minutes.

Recommendations and Summary

The OSN2500 slot splitting function is less used, just understand it.

END