Invention Grant
- Patent Title: Method and apparatus for hitless failover in networking systems using single database
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Application No.: US14524230Application Date: 2014-10-27
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Publication No.: US09912530B2Publication Date: 2018-03-06
- Inventor: Sundeep Singatwaria
- Applicant: Juniper Networks, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Juniper Networks, Inc.
- Current Assignee: Juniper Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Harrity & Harrity, LLP
- Main IPC: H04L1/22
- IPC: H04L1/22 ; H04L12/24 ; G06F11/20 ; H04J3/14

Abstract:
A device includes a master control card that performs control plane processing, a backup control card, where the backup control card takes over control plane processing if the master control card goes out of service, and a database card that connects to the master control card and the backup control card, where the database control card stores information relating to control plane processing. A method of achieving hitless failover in a network element includes detecting that a master control card of the network element has gone out of service, designating the backup control card as a new master control card of the network element, establishing communication with a database card of the network element, and retrieving protocol states information from the database card.
Public/Granted literature
- US20150043327A1 METHOD AND APPARATUS FOR HITLESS FAILOVER IN NETWORKING SYSTEMS USING SINGLE DATABASE Public/Granted day:2015-02-12
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