Invention Grant
- Patent Title: Performing failover in a redundancy group
- Patent Title (中): 在冗余组中执行故障切换
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Application No.: US14083351Application Date: 2013-11-18
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Publication No.: US09219640B2Publication Date: 2015-12-22
- Inventor: Johnson YS Chiang , Jeffrey CH Liu , Ying-Kai Wang , Hao-Ting Shih
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Yudell Isidore PLLC
- Agent Parashos Kalaitzis
- Priority: TW101143054A 20121119
- Main IPC: H03M13/00
- IPC: H03M13/00 ; H04L12/24 ; G06F11/20

Abstract:
A system and computer program product for performing failover in a redundancy group, where the redundancy group comprises a plurality of routers including an active router and a standby router, the failover being characterized by zero black hole or significantly reduced black hole conditions versus a conventional failover system. The system comprises a processing unit connected to the memory and adapted to execute the plurality of instructions, which cause an information appliance to: receive an incoming message at a switch; send a request of identification to the plurality of routers to identify a current active router, where the current active router represents a virtual router of the redundancy group; and in response to receiving a reply containing an identification from the current active router within a predetermined time, forward the incoming message to the current active router.
Public/Granted literature
- US20140143591A1 Performing Failover in a Redundancy Group Public/Granted day:2014-05-22
Information query
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