US 12,261,776 B2
Dynamic L2VPN pseudowire signaling through segment routing
Susanta Kumar Pradhan, Gurgaon (IN); Mukul Sharma, Gurgaon (IN); Amit Kumar Choudhary, Dwarka (IN); and Mohit Sharma, Jaipur (IN)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Jan. 7, 2022, as Appl. No. 17/571,256.
Claims priority of application No. 202111053876 (IN), filed on Nov. 23, 2021.
Prior Publication US 2023/0164068 A1, May 25, 2023
Int. Cl. H04L 45/12 (2022.01); H04L 45/42 (2022.01); H04L 45/586 (2022.01); H04L 45/745 (2022.01)
CPC H04L 45/586 (2013.01) [H04L 45/123 (2013.01); H04L 45/42 (2013.01); H04L 45/745 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A network element comprising:
a plurality of ports and switching circuitry configured to switch data there between; and
a controller configured to
receive a pseudowire configuration for a pseudowire with a second network element,
configure the pseudowire as segment routing,
add the pseudowire configuration in link state advertisements (LSAs) that are flooded in a network via an interior gateway protocol (IGP), and
maintain a state of the pseudowire based on the flooded LSAs and the pseudowire configuration included therein, wherein the pseudowire configuration includes pseudowire signaling parameters that are flooded in a sub type-length-value (TLV) under an extended IS reachability TLV, wherein the pseudowire signaling parameters include a plurality of flow-aware transport (FAT), control word (CW), maximum transmission unit (MTU), virtual circuit (VC) identifier, and peer internet protocol (IP) address.