公开(公告)号：US20130343175A1

公开(公告)日：2013-12-26

申请号：US13531252

申请日：2012-06-22

Applicant: Sriganesh Kini ,  Hector Avalos

Inventor： Sriganesh Kini ,  Hector Avalos

IPC: H04L12/26 ,  H04L12/56

CPC classification number: H04L41/0668 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/50 ,  H04L45/74 ,  H04L61/2061

Abstract: IP addresses are efficiently assigned and advertised across the boundary of two network domains. The two network domains include an access network that implements MPLS-TP and a core network that implements IP, MPLS, or a combination of both. A primary BN at the domain boundary receives an assignment of an IP prefix for a VPN that connects a set of CEs to one or more SNs. The IP prefix represents a pool of IP addresses. The primary BN assigns only one IP address to both itself and a standby BN for the VPN to minimize the use of assigned IP addresses. The primary BN assigns the other IP addresses to the CEs in the VPN. The primary BN then advertises the IP prefix into the core network to enable routing of network data traffic across the network domain boundary.

Abstract translation: IP地址被有效地分配并通过两个网络域的边界通告。 两个网络域包括实现MPLS-TP的接入网络和实现IP，MPLS或两者的组合的核心网络。 域边界上的主要BN接收将一组CE连接到一个或多个SN的VPN的IP前缀的分配。 IP前缀表示IP地址池。 主要BN为本身分配一个IP地址，为该VPN分配一个备用BN，以最小化分配的IP地址的使用。 主要BN将其他IP地址分配给VPN中的CE。 然后，主要BN将IP前缀公布到核心网络中，以实现网络边界上的网络数据流量路由。

公开(公告)号：US09185025B2

公开(公告)日：2015-11-10

申请号：US13531236

申请日：2012-06-22

Applicant: Sriganesh Kini ,  Hector Avalos

Inventor： Sriganesh Kini ,  Hector Avalos

IPC: H04L12/26 ,  H04L12/703 ,  H04L12/707 ,  H04L12/723

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/50

Abstract: A primary border node (BN) and a standby BN are provided for internetworking two network domains, such that connectivity between the two network domains is maintained when a failure occurs in one of the network domains. The two network domains include an access network that implements MPLS-TP and a core network that implements IP, MPLS, or a combination of both. The primary BN establishes a tunnel from itself to the standby BN, and re-directs network data traffic from itself to the standby BN via the tunnel when it detects that an access node has switched connection from the primary VN to the standby BN. The primary BN also monitors its connections to the core network, and signals access nodes to switch to the standby BN if a failure is detected in these connections.

Abstract translation: 提供主边界节点（BN）和备用BN用于互联网络化两个网络域，使得当网络域中的一个发生故障时，维持两个网络域之间的连接。 两个网络域包括实现MPLS-TP的接入网络和实现IP，MPLS或两者的组合的核心网络。 主要BN建立从自己到备用BN的隧道，并且当它检测到接入节点已经从主VN到备用BN的连接已经切换时，通过隧道将网络数据业务自身重新定向到备用BN。 主要BN还监视其与核心网络的连接，并且如果在这些连接中检测到故障，则信号接入节点切换到备用BN。

公开(公告)号：US20130343180A1

公开(公告)日：2013-12-26

申请号：US13531236

申请日：2012-06-22

Applicant: Sriganesh Kini ,  Hector Avalos

Inventor： Sriganesh Kini ,  Hector Avalos

IPC: H04L12/26 ,  H04L12/56

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/50

Abstract: A primary border node (BN) and a standby BN are provided for internetworking two network domains, such that connectivity between the two network domains is maintained when a failure occurs in one of the network domains. The two network domains include an access network that implements MPLS-TP and a core network that implements IP, MPLS, or a combination of both. The primary BN establishes a tunnel from itself to the standby BN, and re-directs network data traffic from itself to the standby BN via the tunnel when it detects that an access node has switched connection from the primary VN to the standby BN. The primary BN also monitors its connections to the core network, and signals access nodes to switch to the standby BN if a failure is detected in these connections.

Abstract translation: 提供主边界节点（BN）和备用BN用于互联网络化两个网络域，使得当网络域中的一个发生故障时，维持两个网络域之间的连接。 两个网络域包括实现MPLS-TP的接入网络和实现IP，MPLS或两者的组合的核心网络。 主要BN建立从自己到备用BN的隧道，并且当它检测到接入节点已经从主VN到备用BN的连接已经切换时，通过隧道将网络数据业务自身重新定向到备用BN。 主要BN还监视其与核心网络的连接，并且如果在这些连接中检测到故障，则信号接入节点切换到备用BN。

公开(公告)号：US08988985B2

公开(公告)日：2015-03-24

申请号：US13531252

申请日：2012-06-22

Applicant: Sriganesh Kini ,  Hector Avalos

Inventor： Sriganesh Kini ,  Hector Avalos

IPC: H04L12/26 ,  H04L12/24

CPC classification number: H04L41/0668 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/50 ,  H04L45/74 ,  H04L61/2061

Abstract: IP addresses are efficiently assigned and advertised across the boundary of two network domains. The two network domains include an access network that implements MPLS-TP and a core network that implements IP, MPLS, or a combination of both. A primary BN at the domain boundary receives an assignment of an IP prefix for a VPN that connects a set of CEs to one or more SNs. The IP prefix represents a pool of IP addresses. The primary BN assigns only one IP address to both itself and a standby BN for the VPN to minimize the use of assigned IP addresses. The primary BN assigns the other IP addresses to the CEs in the VPN. The primary BN then advertises the IP prefix into the core network to enable routing of network data traffic across the network domain boundary.

Abstract translation: IP地址被有效地分配并通过两个网络域的边界通告。 两个网络域包括实现MPLS-TP的接入网络和实现IP，MPLS或两者的组合的核心网络。 域边界上的主要BN接收将一组CE连接到一个或多个SN的VPN的IP前缀的分配。 IP前缀表示IP地址池。 主要BN为本身分配一个IP地址，为该VPN分配一个备用BN，以最小化分配的IP地址的使用。 主要BN将其他IP地址分配给VPN中的CE。 然后，主要BN将IP前缀公布到核心网络中，以实现网络边界上的网络数据流量路由。

公开(公告)号：US08681607B2

公开(公告)日：2014-03-25

申请号：US13457192

申请日：2012-04-26

Applicant: Wenhu Lu ,  Sriganesh Kini

Inventor： Wenhu Lu ,  Sriganesh Kini

IPC: G01R31/08

CPC classification number: H04L45/42 ,  H04L45/00 ,  H04L45/02 ,  H04L45/123 ,  H04L45/1283 ,  H04L45/28 ,  H04L45/50

Abstract: A network element implementing Multiprotocol Label Switching to automatically create an optimal deterministic back-up Label Switch Path (LSP) that is maximally disjointed from a primary LSP to provide a reliable back up to the primary LSP. The network element receives a request for a generation of an LSP, determines that the request for the generation of the LSP is for the back-up LSP, locates each link of the primary LSP in a traffic engineering database, modifies each link of the primary LSP to have a link cost significantly greater than an actual link cost to discourage use of each link of the primary LSP in the back-up LSP, executes a Constrained Shortest Path First algorithm to obtain the back-up LSP, wherein the back-up LSP has a maximum disjointedness from the primary LSP due to a modified cost of each link of the primary LSP, and returns the back-up LSP.

Abstract translation: 实现多协议标签交换的网元，自动创建一个最佳的确定性备份标签交换路径（LSP），最大限度地脱离主LSP，以提供可靠的备份到主LSP。 网元接收到生成LSP的请求，确定生成LSP的请求是用于备份LSP，将主LSP的每个链路定位在流量工程数据库中，修改主链路的每个链路 LSP具有明显大于实际链路成本的链路成本，以阻止在备用LSP中使用主LSP的每个链路，执行约束最短路径优先算法以获得备份LSP，其中备份LSP 由于主LSP的每个链路的修改成本，LSP与主LSP的最大不相容性，并返回备用LSP。

公开(公告)号：US20120218884A1

公开(公告)日：2012-08-30

申请号：US13113007

申请日：2011-05-20

Applicant: Sriganesh Kini ,  Srikanth Narayanan

Inventor： Sriganesh Kini ,  Srikanth Narayanan

IPC: H04L12/24 ,  H04L12/56

CPC classification number: H04L45/507 ,  H04L45/22 ,  H04L45/28

Abstract: MPLS (Multiprotocol Label Switching) fast re-routing using LDP (Label Distribution Protocol) is described. A first network element in a MPLS network receives a first label advertised from a second network element in the MPLS network. The first network element computes a shortest path tree (SPT) to reach a destination network element under a potential failure condition. The second network element is a nexthop of the first network element in the computed SPT and is not upstream from the potential failure condition. The first network element advertises a second label to one or more third network elements for a backup LDP LSP (Label Switched Path) that will serve as a backup when the potential failure condition is realized. The third network element(s) are upstream neighbors on the computed SPT with respect to the first network element. The first network element installs a swap action from the second label to the first label.

Abstract translation: 描述了使用LDP（标签分发协议）的MPLS（多协议标签交换）快速重路由。 MPLS网络中的第一网元接收从MPLS网络中的第二网元发布的第一标签。 第一个网元计算一个最短路径树（SPT），以在潜在的故障条件下到达目标网元。 第二个网元是计算出的SPT中第一个网元的下一跳，不在潜在故障条件的上游。 第一个网络单元向一个或多个第三个网元发布第二个标签，用于备份LDP LSP（标签交换路径），当实现潜在的故障条件时，备用LDP LSP（标签交换路径）将用作备份。 第三网络元件是相对于第一网络元件的计算的SPT上的上游邻居。 第一个网络元素将第二个标签的交换动作安装到第一个标签。

公开(公告)号：US08233387B2

公开(公告)日：2012-07-31

申请号：US12614323

申请日：2009-11-06

Applicant: Wenhu Lu ,  Sriganesh Kini

Inventor： Wenhu Lu ,  Sriganesh Kini

IPC: G01R31/08

CPC classification number: H04L45/42 ,  H04L45/00 ,  H04L45/02 ,  H04L45/123 ,  H04L45/1283 ,  H04L45/28 ,  H04L45/50

Abstract: A network element implementing Multiprotocol Label Switching to automatically create an optimal deterministic back-up Label Switch Path (LSP) that is maximally disjointed from a primary LSP to provide a reliable back up to the primary LSP. The network element receives a request for a generation of an LSP, determines that the request for the generation of the LSP is for the back-up LSP, locates each link of the primary LSP in a traffic engineering database, modifies each link of the primary LSP to have a link cost significantly greater than an actual link cost to discourage use of each link of the primary LSP in the back-up LSP, executes a Constrained Shortest Path First algorithm to obtain the back-up LSP, wherein the back-up LSP has a maximum disjointedness from the primary LSP due to a modified cost of each link of the primary LSP, and returns the back-up LSP.

Abstract translation: 实现多协议标签交换的网元，自动创建一个最佳的确定性备份标签交换路径（LSP），最大限度地脱离主LSP，以提供可靠的备份到主LSP。 网元接收到生成LSP的请求，确定生成LSP的请求是用于备份LSP，将主LSP的每个链路定位在流量工程数据库中，修改主链路的每个链路 LSP具有明显大于实际链路成本的链路成本，以阻止在备用LSP中使用主LSP的每个链路，执行约束最短路径优先算法以获得备份LSP，其中备份LSP 由于主LSP的每个链路的修改成本，LSP与主LSP的最大不相容性，并返回备用LSP。

公开(公告)号：US20120076145A1

公开(公告)日：2012-03-29

申请号：US12982734

申请日：2010-12-30

Applicant: Sriganesh Kini

Inventor： Sriganesh Kini

IPC: H04L12/56

CPC classification number: H04L12/4641 ,  H04L43/10 ,  H04L45/304 ,  H04L45/68

Abstract: A method implemented by a first provider equipment (PE) device to enable operations, administration and management (OAM) functionality over a pseudo-wire (PW) between the first PE device and a second PE device, wherein the PW traverses a packet switched network and carries control channel messages and a flow of data packets, and where the packet switched network includes nodes that use information outside a pseudo-wire label stack of the data packets for determining multi-path routing, the method including receiving a control channel message at the first PE to be forwarded over the pseudo-wire to the second PE, and prefixing the control channel message with a pseudo-flow header to ensure that the control channel message is forwarded over a same route by the nodes of the packet switched network as the data packets of the flow, thereby enabling OAM functionality to be accurately performed for the pseudo-wire.

Abstract translation: 一种由第一提供商设备（PE）设备实现的方法，用于通过第一PE设备和第二PE设备之间的伪线（PW）实现操作，管理和管理（OAM）功能，其中PW穿过分组交换网络 并携带控制信道消息和数据分组流，其中分组交换网络包括使用用于确定多路径路由的数据分组的伪线标签堆栈外的信息的节点，该方法包括：接收控制信道消息 将第一个PE通过伪线转发到第二个PE，并在控制信道消息前面加上一个伪流头，以确保控制信道消息由分组交换网络的节点通过相同的路由转发为 流的数据包，从而使得能够准确地执行伪线的OAM功能。

公开(公告)号：US20120075986A1

公开(公告)日：2012-03-29

申请号：US12983126

申请日：2010-12-31

Applicant: Wenhu Lu ,  Albert Jining Tian ,  Sriganesh Kini

Inventor： Wenhu Lu ,  Albert Jining Tian ,  Sriganesh Kini

IPC: H04L12/26

CPC classification number: H04L45/22 ,  H04L45/02 ,  H04L45/28 ,  H04L45/50 ,  H04L45/66

Abstract: Fast flooding based fast convergence to recover from a network failure. A router detects a network failure, and responsive to that failure, transmits a fast failure notification message to a set of one or more routers. The fast failure notification message includes information that identifies the network failure and also indicates that the fast failure notification message is to be flooded by the set of routers independently of convergence. The router updates a routing table to reflect the network failure. The transmission of the fast failure notification message is performed prior to completion of the routing table update to reflect the network failure.

Abstract translation: 快速洪泛快速收敛，从网络故障中恢复。 路由器检测到网络故障，并响应于该故障，将快速故障通知消息发送到一个或多个路由器的集合。 快速故障通知消息包括识别网络故障的信息，并且还指示快速故障通知消息将被该组路由器独占于收敛而泛洪。 路由器更新路由表以反映网络故障。 在完成路由表更新之前执行快速故障通知消息的传输以反映网络故障。

公开(公告)号：US20110249677A1

公开(公告)日：2011-10-13

申请号：US13164760

申请日：2011-06-20

Applicant: Sriganesh Kini ,  Attila Zoltan Takacs

Inventor： Sriganesh Kini ,  Attila Zoltan Takacs

IPC: H04L12/56

CPC classification number: H04L12/462 ,  H04L12/4641 ,  H04L45/586 ,  H04L49/45 ,  H04L49/602 ,  H04L49/604

Abstract: A method and apparatus that operates two bridging protocols in a hybrid bridging node is described. The operation of the two bridging protocols in the hybrid node allows for an incremental transition of a provider bridging network from operating a legacy bridging protocol that shares MAC addresses to a bridging network that operates VPLS and/or PBB bridging protocols. The hybrid bridging node selectively broadcasts unicast packets with unknown MAC addresses from the nodes operating VPLS and/or PBB to nodes operating a legacy bridging protocol.

Abstract translation: 描述了在混合桥接节点中操作两个桥接协议的方法和装置。 混合节点中的两个桥接协议的操作允许供应商桥接网络从运行共享MAC地址的传统桥接协议到运行VPLS和/或PBB桥接协议的桥接网络的增量转换。 混合桥接节点从运行VPLS和/或PBB的节点选择性地广播具有未知MAC地址的单播分组到运行传统桥接协议的节点。