Methods and apparatus for improved failure recovery of intermediate systems

Abstract

Methods and apparatus relating to intermediate system recovery to reduce the required amount of computational resources and network bandwidth to recover an intermediate system after an operational failure. The intermediate system conceals its operational failure from neighboring systems and queries them for information sufficient to simplify the reconstruction of its routing information. The intermediate system can interoperate with existing neighbor intermediate systems that have not implemented the invention allowing the benefit and convenience of incrementally deploying embodiments of the present invention. Embodiments of the present invention include but are not limited to intermediate systems that use IS-IS and BGP protocols.

Dependencies are inferred from the claim text.