Patent ID: 11888734
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method by a first extension header (EH) capable node in a Multiprotocol Label Switching (MPLS) network including both EH capable nodes and EH non-capable nodes, the method comprising:
receiving advertised capabilities of a downstream node within the MPLS network, the advertised capabilities indicating whether the downstream node is an EH capable node;
receiving a packet to be transmitted to the downstream node via the MPLS network;
determining whether the packet includes an extension header (EH); and
inserting an EH label into an MPLS label stack of the packet after determining the advertised capabilities of the downstream node indicate that the downstream node is EH capable and the packet does not include the EH.