US 11,811,591 B2
Method and apparatus for network communication
Jiang He, Beijing (CN); Zhenning Zhao, Beijing (CN); and Bolin Nie, Beijing (CN)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/614,069
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 31, 2019, PCT No. PCT/CN2019/089573
§ 371(c)(1), (2) Date Nov. 24, 2021,
PCT Pub. No. WO2020/237639, PCT Pub. Date Dec. 3, 2020.
Prior Publication US 2022/0231906 A1, Jul. 21, 2022
Int. Cl. G06F 15/173 (2006.01); H04L 41/0668 (2022.01); H04L 12/46 (2006.01); H04L 43/0805 (2022.01); H04L 43/10 (2022.01); G06F 15/16 (2006.01)
CPC H04L 41/0668 (2013.01) [H04L 12/462 (2013.01); H04L 43/0805 (2013.01); H04L 43/10 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method at a first edge device of a first network, the method comprising the first edge device:
determining a link between an edge device of a second network and the first edge device of the first network is failed, or the edge device of the second network is failed, or an identifier of an Ethernet segment corresponding to the edge device of the second network has been changed;
advertising a first message including withdrawal of the Ethernet segment corresponding to the edge device of the second network and a corresponding substitution Ethernet segment of the second network, wherein the corresponding substitution Ethernet segment of the second network can be used by one or more other edge devices of the first network receiving the first message to switch routes associated with the Ethernet segment corresponding to the edge device of the second network to the corresponding substitution Ethernet segment of the second network;
determining the link is recovered or the edge device of the second network is recovered; and
advertising a second message including reachability of the Ethernet segment corresponding to the edge device of the second network and the corresponding substitution Ethernet segment of the second network, wherein the corresponding substitution Ethernet segment of the second network can be used by one or more other edge devices of the first network to switch routes that have been previously switched to the corresponding substitution Ethernet segment of the second network back to the Ethernet segment corresponding to the edge device of the second network.