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Ensuring 1:1 MPLS tunnels are line card diverse through signaling and path computation

IP.com Disclosure Number: IPCOM000255728D
Publication Date: 2018-Oct-11
Document File: 7 page(s) / 349K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present disclosure relates to ensuring 1:1 Multiprotocol Label Switching (MPLS) tunnels are line card diverse through signaling and path computation. Specifically, a new sub-Type-Length-Value (sub-TLV) is proposed in Intermediate System-Intermediate System (IS-IS) to detect line card information of all interfaces (e.g., Internet Protocol (IP) interfaces). The line card information denotes a specific hardware location of an interface. With this information, backup tunnels can be created as line card diverse providing better protection, i.e., the line card is not a single point of failure.