Invention Grant
- Patent Title: Method and apparatus for improving convergence in networks
- Patent Title (中): 改善网络融合的方法和装置
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Application No.: US11267865Application Date: 2005-11-04
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Publication No.: US07656819B2Publication Date: 2010-02-02
- Inventor: Keyur Patel , Chandrashekhar Appanna , John Scudder
- Applicant: Keyur Patel , Chandrashekhar Appanna , John Scudder
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Hickman Palermo Truong & Becker LLP
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04L12/56 ; H04J3/16 ; H04J3/22

Abstract:
A method of improving convergence in networks that use path vector protocols. In one embodiment using Border Gateway Protocol (BGP) for inter-domain route and reachability communication, nodes that need to remove routes using EBGP NLRI announcements send BGP WITHDRAW messages containing a new route originator attribute that identifies an originator of a specified withdrawn route. A receiving node removes the specified route from its routing information base (RIB), and matches the originator to other paths in the RIB. Matching paths are marked as ineligible for consideration in a best path computation, thereby preventing the use of routes that are unreachable but not yet withdrawn by an originating node. The approach causes faster BGP convergence, reduces unnecessary route flapping, and alleviates unnecessary route dampening.
Public/Granted literature
- US20070104106A1 Method and apparatus for improving convergence in networks Public/Granted day:2007-05-10
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