Which of the following are the components of general package format of PWE3? (Multiple Choice)

MPLS APS is a network protection mechanism that implements service creation through the detection function of MPLS OAM.

Before creating an optical cross-connection, you need to manually configure the corresponding port of the corresponding board as a boundary port, for example, the line-side port of the FIU board between two sites.

What should be paid attention to when configuring extended ECC? (Multiple Choice)

The working mode provided by the line fiber quality monitoring function does not include _____.