In a 2.5GMSP ring consisting of four MSTP sites, which of the following statements about alarm reports is correct when a protection switchover occurs?
Answer(s): B
The frame structure of ODU4 is four times that of ODU1
The rate of SF64 and SL64 boards is STM54. Therefore, the two plates can be interconnected.
Manual configuration will clear the data on the NE side
Answer(s): A
NE A and NE B are adjacent NEIf B3 and low-order errors occur in the A->B direction, and B1, B2, B3, and low-order errors occur in the B->A direction, it is caused by Which of the following performance events does NEA report? (Multiple choice).
Answer(s): A,C,E,F
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