As shown in the figure, R1, R2, and R3 run OSPP at the same time and declare their respective ring ports, as described below is the error.

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Haitham Hanash · Accepted Answer

R2, you can use the filter po y export command to filter R3's loopback route

Haitham Hanash · Answer

R2 you can make Àfilter in Area 0 The import command to filter the loopback route for R3 on

Haitham Hanash · Answer

RI can make Àfilter-policy import filter the loopback route for R3

Haitham Hanash · Answer

RI, you can use the Make Àfilter export command in Area 1 to filter loopback routes for R3

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