Extending control plane functions to the network edge in an optical transport network
US9118421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Oct 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/64
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of extending the control plane to a network edge for a network having first set of nodes of the network are designated as core nodes, each core node being operable to route subscriber traffic between a pair of neighbor core nodes and a second set of control-plane enabled nodes of the network designated as tail nodes, each tail node connected to a core node and operating only as a source or sink of subscriber traffic. Each core node that is connected to at least one tad node is designated as a host node. The host node is controlled to advertise summary information of its connected tail nodes to other core and tail nodes in the network, thus making it possible to extend control plane function to the tail nodes which can calculate connection routes, set-up/tear-down connections and perform connection failure recovery functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.