As shown in the figure, the operator's BGP MPLS IP VPN backbone network constructs SP through DP. If the two sites of user X are to communicate through the BGP MPLS IP VPN network, PE1 and PE2 must use a 32-bit mask Loopback interface address to est

As shown in the figure, the operator's BGP MPLS IP VPN backbone network constructs SP through DP. If the two sites of user X are to communicate through the BGP MPLS IP VPN network, PE1 and PE2 must use a 32-bit mask Loopback interface address to establish MP-IBGP peer relationship.

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