Merge Point

This is the point where the protection tunnel and the protected LSP meets. This is also the tail end router of the protection tunnel.

The functions of Merge point includes  merging the trafic back to the protected LSP path.

Maintain the protection tunnel state:-  RESV messages are sent to refresh the protection tunnel.

Location of the Merge Point:-

Far MP approach:- In this case the MP terminates as close as possible to the Tail end router

Near MP approach:- In this case the MP terminates very near to the PLR, for link protection it terminates to the next hop router and in the case of Node protection it terminates to next to next hop router.

One to One uses the far MP approach and the facility implements near MP approach.