Ensuring 1:1 MPLS tunnels are line card diverse through signaling and path computation
Publication Date: 2018-Oct-11
The IP.com Prior Art Database
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.