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1. 发明申请

US20110222550A1 APPARATUS AND METHOD TO HIDE TRANSIT ONLY MULTI-ACCESS NETWORKS IN OSPF 有权
标题翻译：在OSPF中仅隐藏多个接入网络的设备和方法
公开(公告)号：US20110222550A1
公开(公告)日：2011-09-15
申请号：US13048731
申请日：2011-03-15
申请人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
发明人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
IPC分类号： H04L12/56
CPC分类号： H04L45/021 , H04L45/02 , H04L45/025 , H04L45/54 , H04L45/60 , H04L47/10 , H04L63/0407
摘要： In one embodiment, a Link State Advertisement (LSA) is received from a first router in a network at a second router in the network. The LSA advertises an address of an interface of the first router. The second router determines whether the LSA includes a transit-only identification that indicates the interface of the first router is a transit-only interface. If the LSA does not include a transit-only identification, the second router installs the advertised address of the interface of the first router in a Router Information Base (RIB) of the second router. If the LSA does include a transit-only identification, the second router declines to install the advertised address of the interface of the first router in the RIB of the second router.
摘要翻译：在一个实施例中，在网络中的第二路由器处从网络中的第一路由器接收链路状态通告（LSA）。 LSA通告第一个路由器的接口地址。第二个路由器确定LSA是否包括仅表示第一个路由器的接口的只有传输的标识才是传输专用接口。如果LSA不包含传输标识，则第二路由器将路由器信息库（RIB）中第一个路由器接口的通告地址安装在第二个路由器上。如果LSA确实包含只有传输标识，则第二个路由器拒绝在第二个路由器的RIB中安装第一个路由器接口的通告地址。

2. 发明授权

US08537817B2 Apparatus and method to hide transit only multi-access networks in OSPF 有权
标题翻译：在OSPF中隐藏只有多路访问网络的设备和方法
公开(公告)号：US08537817B2
公开(公告)日：2013-09-17
申请号：US13048731
申请日：2011-03-15
申请人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
发明人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
IPC分类号： H04L12/28 , H04W4/00 , G06F15/177
CPC分类号： H04L45/021 , H04L45/02 , H04L45/025 , H04L45/54 , H04L45/60 , H04L47/10 , H04L63/0407
摘要： In one embodiment, a Link State Advertisement (LSA) is received from a first router in a network at a second router in the network. The LSA advertises an address of an interface of the first router. The second router determines whether the LSA includes a transit-only identification that indicates the interface of the first router is a transit-only interface. If the LSA does not include a transit-only identification, the second router installs the advertised address of the interface of the first router in a Router Information Base (RIB) of the second router. If the LSA does include a transit-only identification, the second router declines to install the advertised address of the interface of the first router in the RIB of the second router.
摘要翻译：在一个实施例中，在网络中的第二路由器处从网络中的第一路由器接收链路状态通告（LSA）。 LSA通告第一个路由器的接口地址。第二个路由器确定LSA是否包括仅表示第一个路由器的接口的只有传输的标识才是传输专用接口。如果LSA不包含传输标识，则第二路由器将路由器信息库（RIB）中第一个路由器接口的通告地址安装在第二个路由器上。如果LSA确实包含只有传输标识，则第二个路由器拒绝在第二个路由器的RIB中安装第一个路由器接口的通告地址。

3. 发明授权

US07929524B2 Apparatus and method to hide transit only multi-access networks in OSPF 有权
标题翻译：在OSPF中隐藏只有多路访问网络的设备和方法
公开(公告)号：US07929524B2
公开(公告)日：2011-04-19
申请号：US11537275
申请日：2006-09-29
申请人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
发明人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
IPC分类号： H04L12/28 , H04W4/00 , G06F15/177
CPC分类号： H04L45/021 , H04L45/02 , H04L45/025 , H04L45/54 , H04L45/60 , H04L47/10 , H04L63/0407
摘要： A system for hiding transit-only interfaces in a network. When a routing system is advertising a transit-only interface, the advertisement is marked to indicate the address is a transit-only interface. A routing system receives the advertisement and detects the identifier of the transit-only interface and does not store the address in the Router Information Base of the routing system.
摘要翻译：用于在网络中隐藏只转接口的系统。当路由系统广告传输专用接口时，该广告被标记为指示该地址是仅传输接口。路由系统接收广告并检测传输接口的标识符，并且不将路由信息库中的地址存储在路由信息库中。

4. 发明申请

US20080080494A1 APPARATUS AND METHOD TO HIDE TRANSIT ONLY MULTI-ACCESS NETWORKS IN OSPF 有权
标题翻译：在OSPF中仅隐藏多个接入网络的设备和方法
公开(公告)号：US20080080494A1
公开(公告)日：2008-04-03
申请号：US11537275
申请日：2006-09-29
申请人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
发明人： Yi Yang , Alvaro E. Retana , James L. Ng , Abhay Roy , Alfred C. Lindem , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
IPC分类号： H04L12/56
CPC分类号： H04L45/021 , H04L45/02 , H04L45/025 , H04L45/54 , H04L45/60 , H04L47/10 , H04L63/0407
摘要： A system for hiding transit-only interfaces in a network. When a routing system is advertising a transit-only interface, the advertisement is marked to indicate the address is a transit-only interface. A routing system receives the advertisement and detects the identifier of the transit-only interface and does not store the address in the Router Information Base of the routing system.
摘要翻译：用于在网络中隐藏只转接口的系统。当路由系统广告传输专用接口时，该广告被标记为指示该地址是仅传输接口。路由系统接收广告并检测传输接口的标识符，并且不将路由信息库中的地址存储在路由信息库中。

5. 发明授权

US08130638B2 Method and apparatus to elect ABRs dynamically and intelligently 有权
标题翻译：动态和智能地选择ABR的方法和装置
公开(公告)号：US08130638B2
公开(公告)日：2012-03-06
申请号：US11339791
申请日：2006-01-24
申请人： Yi Yang , Alvaro E. Retana , Abhay Roy , Alfred C. Lindem, III , Sina Mirtorabi
发明人： Yi Yang , Alvaro E. Retana , Abhay Roy , Alfred C. Lindem, III , Sina Mirtorabi
IPC分类号： H04L12/26
CPC分类号： H04L45/04
摘要： The present invention elects an area border router from a plurality of potential area border routers by determining a full set of all areas attached to a router. A determination is made as to a full set of area pairs from the determined full set of areas. Routers are identified in a first area of the determined full set of areas that are reachable through an intra-area route in the first area, and routers are identified in a second area of the determined full set of areas that are reachable through an intra-area route in the second area. If there is a router that is unreachable through either an intra-area route in the first area or an intra-area route in the second area, then declare the first router to be an area border router, else new first and second areas are selected.
摘要翻译：本发明通过确定连接到路由器的所有区域的完整集合，从多个潜在区域边界路由器中选择区域边界路由器。根据所确定的整套区域确定一整套区域对。路由器被识别在通过第一区域中的区域内路由可达到的所确定的全集合区域中的第一区域中，并且路由器被识别在所确定的全集合区域中，区域路线在第二个地区。如果存在通过第一区域内的区域内路由或第二区域内的区域内路由不可达的路由器，则将第一路由器声明为区域边界路由器，否则选择新的第一和第二区域。

6. 发明申请

US20070171845A1 Method and apparatus to elect ABRs dynamically and intelligently 有权
标题翻译：动态和智能地选择ABR的方法和装置
公开(公告)号：US20070171845A1
公开(公告)日：2007-07-26
申请号：US11339791
申请日：2006-01-24
申请人： Yi Yang , Alvaro Retana , Abhay Roy , Alfred Lindem , Sina Mirtorabi
发明人： Yi Yang , Alvaro Retana , Abhay Roy , Alfred Lindem , Sina Mirtorabi
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/04
摘要： The present invention elects an area border router from a plurality of potential area border routers by determining a full set of all areas attached to a router. A determination is made as to a full set of area pairs from the determined full set of areas. Routers are identified in a first area of the determined full set of areas that are reachable through an intra-area route in the first area, and routers are identified in a second area of the determined full set of areas that are reachable through an intra-area route in the second area. If there is a router that is unreachable through either an intra-area route in the first area or an intra-area route in the second area, then declare the first router to be an area border router, else new first and second areas are selected.
摘要翻译：本发明通过确定连接到路由器的所有区域的完整集合，从多个潜在区域边界路由器中选择区域边界路由器。根据所确定的整套区域确定一整套区域对。路由器被识别在通过第一区域中的区域内路由可达到的所确定的全集合区域中的第一区域中，并且路由器被识别在所确定的全集合区域中，区域路线在第二个地区。如果存在通过第一区域内的区域内路由或第二区域内的区域内路由不可达的路由器，则将第一路由器声明为区域边界路由器，否则选择新的第一和第二区域。

7. 发明授权

US08023517B2 System and method for improving network performance and security by controlling topology information 有权
标题翻译：通过控制拓扑信息提高网络性能和安全性的系统和方法
公开(公告)号：US08023517B2
公开(公告)日：2011-09-20
申请号：US11400479
申请日：2006-04-05
申请人： Yi Yang , Donnie Van Savage , Timothy M. Gage , Thuan Van Tran , James L. Ng
发明人： Yi Yang , Donnie Van Savage , Timothy M. Gage , Thuan Van Tran , James L. Ng
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/54 , H04L45/02
摘要： A system for optimizing the performance of a network. In an illustrative embodiment, the system includes a memory containing one or more data structures data structures. A first module determines transit-only information. A second module selectively omits the transit-only information from the one or more data structures. In a more specific embodiment, the one or more data structures include one or more tables. The transit-only information includes interface Internet Protocol (IP) addresses associated with network interfaces that are transit-only interfaces. The route information may include network topology information. The one or more tables may include a network topology table. Plural routers positioned in the network incorporate one or more instances of the system. The routers may employ one or more routing protocols, such as include Enhanced Interior Gateway Routing Protocol (EIGRP) or Routing Information Protocol (RIP).
摘要翻译：用于优化网络性能的系统。在说明性实施例中，系统包括包含一个或多个数据结构数据结构的存储器。第一个模块确定只传输信息。第二模块选择性地省略来自一个或多个数据结构的仅传输信息。在更具体的实施例中，一个或多个数据结构包括一个或多个表。仅传输信息包括与作为仅传输接口的网络接口相关联的接口因特网协议（IP）地址。路由信息可以包括网络拓扑信息。一个或多个表可以包括网络拓扑表。位于网络中的多个路由器包含系统的一个或多个实例。路由器可以采用一个或多个路由协议，诸如包括增强型内部网关路由协议（EIGRP）或路由信息协议（RIP）。

8. 发明授权

US08098589B2 System and method for exchanging awareness information in a network environment 有权
标题翻译：在网络环境中交换意识信息的系统和方法
公开(公告)号：US08098589B2
公开(公告)日：2012-01-17
申请号：US11963003
申请日：2007-12-21
申请人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
发明人： Madhavi W. Chandra , David A. Cook , Alvaro E. Retana , Russell I. White , Yi Yang
IPC分类号： H04L12/28
CPC分类号： H04L45/02 , H04L45/26 , H04W40/248
摘要： A method for communicating packets in a network environment is provided that includes receiving a packet at a network element and identifying a sequence number included in the packet that correlates to awareness information associated with one or more adjacent network elements. A table included in the network element may be updated in order to account for the awareness information included within the packet that has not been accounted for by the network element. In cases where the awareness information included in the packet has already been accounted for, the packet may be ignored.
摘要翻译：提供了一种用于在网络环境中传送分组的方法，包括在网络元件处接收分组，并且识别与包含在与一个或多个相邻网络元素相关联的识别信息相关联的分组中的序列号。可以更新包括在网络元件中的表，以便考虑包含在网络元件尚未被考虑的分组内的识别信息。在分组中包含的识别信息已经被考虑的情况下，分组可以被忽略。

9. 发明授权

US07672253B2 Border router with selective filtering of link state advertisements 有权
标题翻译：边界路由器选择性过滤链路状态广告
公开(公告)号：US07672253B2
公开(公告)日：2010-03-02
申请号：US11834445
申请日：2007-08-06
申请人： Yi Yang , Russell Ivan White , Alvaro E. Retana , Abhay Kumar Roy
发明人： Yi Yang , Russell Ivan White , Alvaro E. Retana , Abhay Kumar Roy
IPC分类号： H04L12/16 , H04L12/28
CPC分类号： H04L45/02
摘要： An example embodiment of the present invention provides a process relating to the selective filtering of an LSA at a not-so-stubby-sub-area (NSSSA) border router. In one embodiment, the border router receives an LSA from another router inside the NSSSA, which might be in the access layer of the hierarchical network design model and which might use OSPF as its IGP. If the LSA is Type 1 and includes a subnet route or forwarder address, the border router floods it to its neighboring routers, regardless of whether they are inside the NSSSA. If the LSA is Type 7 and includes a host address, the border router floods it to a neighboring router if the neighboring router is inside the NSSSA, but filters the LSA if the neighboring router is outside the NSSSA, for example, in an OSPF area in the distribution layer of the hierarchical network design model.
摘要翻译：本发明的一个示例性实施例提供了一种涉及在不那样的子区域（NSSSA）边界路由器上的LSA的选择性过滤的过程。在一个实施例中，边界路由器从NSSSA内部的另一个路由器接收LSA，该LSA可能位于分层网络设计模型的接入层中，并且可能使用OSPF作为其IGP。如果LSA为Type 1，并且包含子网路由或转发地址，则边界路由器会将其泛洪到邻近路由器，而不管它们是否位于NSSSA内。如果LSA为Type 7并且包含主机地址，则如果相邻路由器位于NSSSA内，则边界路由器会将其洪泛到邻近路由器，如果相邻路由器在NSSSA之外，则过滤LSA，例如OSPF区域在分层层次的网络设计模型中。

10. 发明授权

US07298707B2 System and method for controlling the flooding of information in a network environment 有权
标题翻译：控制网络环境中信息泛滥的系统和方法
公开(公告)号：US07298707B2
公开(公告)日：2007-11-20
申请号：US10762856
申请日：2004-01-21
申请人： Alvaro E. Retana , David A. Cook , Russell I. White , Yi Yang , Madhavi W. Chandra
发明人： Alvaro E. Retana , David A. Cook , Russell I. White , Yi Yang , Madhavi W. Chandra
IPC分类号： G01R31/08
CPC分类号： H04L45/28 , H04L45/02 , H04L45/021 , H04L45/028 , H04L45/32
摘要： An apparatus for communicating packets in a network environment is provided that includes a first network element that includes a first neighbor list, the first network element being coupled to a second network element and a third network element. The first network element is operable to receive a second neighbor list from the second network element and a third neighbor list from the third network element. The first network element is further operable to determine one or more overlaps provided by the second and third neighbor lists when compared to the first neighbor list, the first network element relaying an update that it receives based on the one or more overlaps.
摘要翻译：提供了一种用于在网络环境中传送分组的装置，其包括包括第一邻居列表的第一网络元件，所述第一网络元件耦合到第二网络元件和第三网络元件。第一网络元件可操作以从第二网络元件接收第二邻居列表，并从第三网络元件接收第三邻居列表。当与第一邻居列表相比较时，第一网络元件还可操作以确定由第二和第三邻居列表提供的一个或多个重叠，第一网络元件基于一个或多个重叠中继其接收的更新。

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