Patent ID: 11943136
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method implemented by a network element (NE) in a network, comprising:
receiving preferred path route (PPR) information comprising a PPR identifier (PPR-ID) and a plurality of PPR-Path Description Elements (PPR-PDEs), the PPR-ID identifying a PPR graph representing a plurality of PPRs between one or more ingress NEs and one or more egress NEs, each PPR-PDE of the plurality of PPR-PDEs describing an element on the PPR graph, a first PPR-PDE comprising a destination flag indicating that the first PPR-PDE identifies an egress NE in the network, an anycast PPR-ID identifying the egress NE, and an anycast group PPR-ID identifying an anycast group including the egress NE;
updating a forwarding database to include a forwarding entry for the egress NE, the forwarding entry including the PPR-ID, the anycast PPR-ID, and the anycast group PPR-ID, the forwarding entry indicating a next element on the PPR graph by which to forward an anycast data packet comprising the anycast PPR-ID; and
forwarding the anycast data packet to the next element on the PPR graph based on the forwarding entry.