US 11,991,066 B2
Method of establishing bidirectional forwarding detection session based on BIER, and BFIR, BFER, system and storage medium
Quan Xiong, Guangdong (CN)
Assigned to ZTE CORPORATION, Guangdong (CN)
Appl. No. 17/433,640
Filed by ZTE CORPORATION, Guangdong (CN)
PCT Filed Feb. 18, 2020, PCT No. PCT/CN2020/075708
§ 371(c)(1), (2) Date Aug. 25, 2021,
PCT Pub. No. WO2020/173340, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 201910142615.0 (CN), filed on Feb. 26, 2019.
Prior Publication US 2022/0150155 A1, May 12, 2022
Int. Cl. H04L 45/02 (2022.01); H04L 45/00 (2022.01); H04L 45/16 (2022.01); H04L 45/745 (2022.01)
CPC H04L 45/04 (2013.01) [H04L 45/026 (2013.01); H04L 45/16 (2013.01); H04L 45/32 (2013.01); H04L 45/745 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of establishing a bidirectional forwarding detection (BFD) session based on bit index explicit replication (BIER), comprising:
creating, by a bit-forwarding ingress router (BFIR), the BFD session;
advertising, by the BFIR, BFD information to a bit-forwarding egress router (BFER) group based on an Interior Gateway Protocol (IGP); and
sending, by the BFIR, a BFD control packet to the BFER group, to trigger the BFER group to establish the BFD session corresponding to the BFIR,
wherein the BFD information comprises: a unique discriminator assigned by the BFIR to a multi-point path, a BIER forwarding table identifier (BIFT-id) and a bit string to which the BFER group belongs.