Method and Apparatus for Restoring Service Label Information

a service label and information technology, applied in the field of communication networks, can solve the problems of affecting the service label, so as to achieve the effect of reducing the churn of service labels
US20120239626A1Inactive Publication Date: 2012-09-20RPX CLEARINGHOUSE
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
RPX CLEARINGHOUSE
Publication Date
2012-09-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

Multiple service label types may be used in a given network element to optimize scalability of the data plane, minimize overhead associated with service label management, and allow new services to be offered. Service label management may be done in a dynamic manner so that service labels may be selected for routes in a dynamic fashion as the network changes. VPNs handled by the network element may have different types of service labels, and different routes within a particular VPN may be allocated different service label types. Service label requests may be stored on the data plane to allow a service label request database to be restored from the data plane upon a control plane failure, so that new service labels are not required to be allocated after a control plane failure.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of U.S. patent application Ser. No. 10 / 889,647, filed Jul. 12, 2004, the content of which is hereby incorporated herein by reference.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to communication networks and, more particularly, to a method and apparatus for restoring service label information.

[0004] 2. Description of the Related Art

[0005] Data communication networks may include various computers, servers, nodes, routers, switches, bridges, hubs, proxies, and other network devices coupled together and configured to pass data to one another. These devices will be referred to herein as “network elements.” Data is communicated through the data communication network by passing protocol data units, such as data frames, packets, cells, or segments, between the network elements by utilizing one or more communication links. A particular protocol data unit may be hand...

Claims

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