MANAGING PATH SELECTION AND RESERVATION FOR TIME SENSITIVE NETWORKS

摘要

In some aspects, the disclosure is directed to methods and systems for management of path selection and reservation between layer 3 devices, as well as path selection and reservation across L2/L3 boundaries. In one implementation, path selection can be managed by separating independent but “cooperating” layers, with layer 3 topology and non-adjacent layer 2 topologies handled separately. A first layer 3 router can be identified as a path computation engine (PCE), while other layer 3 routers can be implemented as path control clients (PCC(s)). One layer 2 PCE can be assigned per layer 2 topology, preventing competing path assignments and reservations.

主权项

1. A system for managing path selection and reservation, comprising:
a first device comprising circuitry configured to implement:
a layer 2 path computation engine configured to:
determine a layer 2 topology for a plurality of devices in communication with the first device; andprovide, to a layer 3 path computation engine, an aggregated summary of the determined layer 2 topology; andthe layer 3 path computation engine, the layer 3 path computation engine configured to:
receive, from a second device executing a layer 3 path computation client, a request for a layer 3 path between a layer 3 source and a layer 3 destination;compute a path between the layer 3 source and the layer 3 destination using the aggregated summary of the layer 2 topology and a switching capability of the layer 2 topology; andprovide, to the layer 3 path computation client of the second device responsive to the request, the computed layer 3 path.