US 11,811,595 B2
Signaling IP path tunnels for traffic engineering
Tarek Saad, Ottawa (CA); Raveendra Torvi, Nashua, NH (US); and Vishnu Pavan Kumar Beeram, Ashburn, VA (US)
Assigned to Juniper Networks, Inc., Sunnyvale, CA (US)
Filed by Juniper Networks, Inc., Sunnyvale, CA (US)
Filed on Dec. 30, 2022, as Appl. No. 18/148,769.
Application 18/148,769 is a division of application No. 16/588,072, filed on Sep. 30, 2019.
Claims priority of provisional application 62/865,771, filed on Jun. 24, 2019.
Claims priority of provisional application 62/864,754, filed on Jun. 21, 2019.
Prior Publication US 2023/0142996 A1, May 11, 2023
Int. Cl. H04L 41/0806 (2022.01); H04L 41/0668 (2022.01); H04L 45/745 (2022.01); H04L 47/125 (2022.01); H04L 47/724 (2022.01); H04L 61/2592 (2022.01); H04L 47/10 (2022.01); H04L 61/5007 (2022.01); H04L 45/50 (2022.01)
CPC H04L 41/0806 (2013.01) [H04L 41/0668 (2013.01); H04L 45/745 (2013.01); H04L 47/10 (2013.01); H04L 47/125 (2013.01); H04L 47/724 (2013.01); H04L 61/2592 (2013.01); H04L 61/5007 (2022.05); H04L 45/50 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by an egress network device of a plurality of network devices of an Internet Protocol (IP) network, a path signaling message to establish a first IP path from an ingress network device of the IP network to the egress network device, wherein the path signaling message includes a record route object to record the plurality of network devices that establish the first IP path;
determining, by the egress network device and based on the record route object, that the first IP path includes a shared sub-path with a second IP path to the egress network device;
generating, by the egress network device and based on determining that the first IP path includes the shared sub-path with the second IP path, a path reservation signaling message including an IP address of the egress network device selected from a set of IP addresses and assigned to the first IP path and the second IP path; and
sending, by the egress network device, the path reservation signaling message to a network device of the plurality of network devices that is along the shared sub-path of the first IP path and the second IP path to cause the network device to configure a shared forwarding state for the first IP path and the second IP path and to forward, without using Multi-Protocol Label Switching, a packet encapsulated with the IP address of the egress network device on the shared sub-path toward the egress network device.