US 11,936,552 B2
Method and device for implementing VPN cross-domain, and border node
Shaofu Peng, Shenzhen (CN); Feicai Jin, Shenzhen (CN); and Haihua Tang, Shenzhen (CN)
Assigned to ZTE CORPORATION, Shenzhen (CN)
Appl. No. 17/264,976
Filed by ZTE Corporation, Shenzhen (CN)
PCT Filed Aug. 6, 2019, PCT No. PCT/CN2019/099512
§ 371(c)(1), (2) Date Feb. 1, 2021,
PCT Pub. No. WO2020/029976, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 201810893131.5 (CN), filed on Aug. 7, 2018.
Prior Publication US 2021/0328906 A1, Oct. 21, 2021
Int. Cl. H04L 45/02 (2022.01); H04L 12/46 (2006.01); H04L 45/50 (2022.01)
CPC H04L 45/04 (2013.01) [H04L 12/4633 (2013.01); H04L 12/4641 (2013.01); H04L 45/50 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for implementing Virtual Private Network (VPN) cross-domain, comprising:
receiving, by a border node, an advertisement message which carries VPN route information and is sent by a first node to a second node, wherein the border node supports Internet Protocol Version 6 Segment Routing (SRv6) capability, and the first node and the second node belong to different domains; and
assigning, by the border node, VPN identity information to a VPN route corresponding to the VPN route information, adding the VPN identity information into the advertisement message, and sending the advertisement message to the second node, wherein the VPN identity information comprises at least one of: a VPN Segment ID (SID) and a VPN label;
wherein in a case where the VPN identity information comprises the VPN SID, after assigning, by the border node, the VPN identity information to the VPN route corresponding to the VPN route information, the method further comprises:
creating, by the border node, a corresponding local SID forwarding entry for the assigned VPN SID, and setting that a forwarding behavior of the local SID forwarding entry comprises swapping an incoming SRv6 SID to an outgoing SRv6 SID or Multiprotocol Label Switching (MPLS) label.