US 12,438,808 B2
Segment routing-based MPLS packet forwarding method and device thereof
Jeong Yun Kim, Daejeon (KR); and Taesik Cheung, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Mar. 24, 2023, as Appl. No. 18/125,843.
Claims priority of application No. 10-2022-0037430 (KR), filed on Mar. 25, 2022.
Prior Publication US 2023/0308388 A1, Sep. 28, 2023
Int. Cl. H04L 45/50 (2022.01); H04L 45/74 (2022.01)
CPC H04L 45/507 (2013.01) [H04L 45/74 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A segment routing-based MPLS packet forwarding method, comprising:
establishing a forwarding path in a Multiple Protocol Label Switching (MPLS) network by receiving a packet;
checking whether processing of a size of a label stack related to each node included in the forwarding path is available or not in each node;
generating a first MPLS packet by adding an MPLS header having the label stack to the packet in response to availability of the processing; and
generating a second MPLS packet by adding an extension header having the label stack and by adding an MPLS header having a part of the label stack allocated according to the label stack size processable by each node to the packet in response to unavailability of the processing.