Invention Grant
US09356856B2 Apparatus and method to hide transit only multi-access networks in OSPF
有权
在OSPF中隐藏只有多路访问网络的设备和方法
- Patent Title: Apparatus and method to hide transit only multi-access networks in OSPF
- Patent Title (中): 在OSPF中隐藏只有多路访问网络的设备和方法
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Application No.: US14013990Application Date: 2013-08-29
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Publication No.: US09356856B2Publication Date: 2016-05-31
- Inventor: Yi Yang , Alvaro E. Retana , James Ng , Abhay Roy , Alfred C. Lindem, III , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: CISCO TECHNOLOGY, INC.
- Current Assignee: CISCO TECHNOLOGY, INC.
- Current Assignee Address: US CA San Jose
- Agency: Polsinelli PC
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04L12/751 ; H04L12/741 ; H04L29/06

Abstract:
In one embodiment, a first router determines whether a network coupling the first router to one or more second routers is transit-only, wherein transit-only indicates connecting only routers to provide for transmission of data from router to router. When the network is transit-only, the first router generates an Open Shortest Path First (OSPF) Link State Advertisement (LSA) that includes an address for the network and a designated network mask. The designated network mast operates as a transit-only identification that indicates the address should not be installed in a Routing Information Base (RIB) upon receipt of the OSPF LSA at the one or more second routers. When the network is not transit-only, the first router generates an OSPF LSA that includes the address for the network but does not include the designated network mask, to permit installation of the address in a RIB upon receipt of the OSPF LSA at the one or more second routers.
Public/Granted literature
- US20140003289A1 APPARATUS AND METHOD TO HIDE TRANSIT ONLY MULTI-ACCESS NETWORKS IN OSPF Public/Granted day:2014-01-02
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