公开(公告)号：US09106525B2

公开(公告)日：2015-08-11

申请号：US14025732

申请日：2013-09-12

Applicant: Cisco Technology, Inc.

Inventor： Anantha Ramaiah ,  Chandrashekhar Appanna ,  Amol Khare

IPC: H04L12/24 ,  H04L29/06 ,  H04L29/14

CPC classification number: H04L41/0668 ,  H04L69/16 ,  H04L69/40

Abstract: A system and method supporting efficient, scalable stateful switchover of transport layer connections in a telecommunications network element. One method involves receiving, at a network element comprising an active transport protocol process coupled to a standby protocol process, a request to configure a first transport layer connection maintained at the active transport protocol process for stateful switchover; receiving an event associated with the first transport layer connection; creating a message containing replicated event information based on the received event; sending the message to the standby transport protocol process; and processing the message at the standby transport protocol process, wherein the standby transport protocol process replicates state information for the first connection.

Abstract translation: 一种支持电信网络元件中传输层连接的有效，可扩展的状态切换的系统和方法。 一种方法包括在包括与备用协议进程相关联的活动传输协议进程的网络元件处接收配置在活动传输协议进程处维持的用于状态切换的第一传输层连接的请求; 接收与所述第一传输层连接相关联的事件; 基于接收到的事件创建包含复制事件信息的消息; 将消息发送到备用传输协议进程; 以及在所述备用传输协议过程处理所述消息，其中所述备用传输协议进程复制所述第一连接的状态信息。

公开(公告)号：US09270536B2

公开(公告)日：2016-02-23

申请号：US14231370

申请日：2014-03-31

Applicant: Cisco Technology, Inc.

Inventor： Balaji Pitta Venkatachalapathy ,  Isidor Kouvelas ,  Keyur P. Patel ,  Anantha Ramaiah

IPC: H04L12/24 ,  H04L12/751 ,  H04L12/715 ,  H04L12/26 ,  H04L12/757

CPC classification number: H04L41/12 ,  H04L41/0893 ,  H04L43/00 ,  H04L43/0852 ,  H04L45/02 ,  H04L45/023 ,  H04L45/04

Abstract: In one embodiment, a router selects a particular peer from an original update group used with an Exterior Gateway Protocol (EGP) such as Border Gateway Protocol (BGP). The original update group includes a plurality of peers of the router that share a same outbound policy and that receive common update messages, from the router, of routing table information. The router determines that the particular peer is a potential slow peer based on a first type of indicia, wherein a slow peer is a peer that cannot keep up with a rate at which the router generates update messages over a prolonged period of time. The router confirms that one or more second types of indicia are consistent with the particular peer being a slow peer. In response to the confirmation, the router determines that the particular peer is a slow peer.

Abstract translation: 在一个实施例中，路由器从与诸如边界网关协议（BGP）的外部网关协议（EGP）一起使用的原始更新组中选择特定对等体。 原始更新组包括共享相同出站策略并且从路由器接收路由表信息的公共更新消息的路由器的多个对等体。 路由器基于第一类型的标记确定特定对等体是潜在的慢对等体，其中慢对等体是不能跟上路由器在较长时间段内生成更新消息的速率的对等体。 路由器确认一个或多个第二类型的标记与特定的对等体是慢对等体一致。 响应于确认，路由器确定特定对等体是慢对等体。

公开(公告)号：US20130227071A1

公开(公告)日：2013-08-29

申请号：US13861210

申请日：2013-04-11

Applicant: Cisco Technology, Inc.

Inventor： Vamsidhar Valluri ,  Anantha Ramaiah ,  Kaushik Biswas

IPC: H04L29/08

CPC classification number: H04L67/02 ,  H04L12/66

Abstract: In one embodiment, an apparatus comprises logic for optimizing return traffic paths using network address translation (NAT). The logic is operable to receive outbound data from a source node in a source network, and to replace a source address in a source address field in the outbound data with a first address from a first address pool associated with a first connection. The logic is operable to determine that return traffic on the first connection needs to be switched over to a second connection, where a second address pool is associated with the second connection. The logic is operable to generate a mapping that associates the first address with a second address from the second address pool and, based on the mapping, to replace the first address in the source address field in the outbound data with the second address. The logic is also operable to send the outbound data to the destination node over the second connection.

Abstract translation: 在一个实施例中，装置包括用于使用网络地址转换（NAT）来优化返回业务路径的逻辑。 该逻辑可操作以从源网络中的源节点接收出站数据，并且使用来自与第一连接相关联的第一地址池的第一地址来替换出站数据中的源地址字段中的源地址。 逻辑可操作以确定第一连接上的返回流量需要切换到第二连接，其中第二地址池与第二连接相关联。 逻辑可操作以生成将第一地址与来自第二地址池的第二地址相关联的映射，并且基于该映射，以用第二地址替换出站数据中的源地址字段中的第一地址。 该逻辑还可用于通过第二连接将出站数据发送到目的地节点。

公开(公告)号：US20140211651A1

公开(公告)日：2014-07-31

申请号：US14231370

申请日：2014-03-31

Applicant: Cisco Technology, Inc.

Inventor： Balaji Pitta Venkatachalapathy ,  Isidor Kouvelas ,  Keyur P. Patel ,  Anantha Ramaiah

IPC: H04L12/24 ,  H04L12/26

CPC classification number: H04L41/12 ,  H04L41/0893 ,  H04L43/00 ,  H04L43/0852 ,  H04L45/02 ,  H04L45/023 ,  H04L45/04

Abstract: In one embodiment, a router selects a particular peer from an original update group used with an Exterior Gateway Protocol (EGP) such as Border Gateway Protocol (BGP). The original update group includes a plurality of peers of the router that share a same outbound policy and that receive common update messages, from the router, of routing table information. The router determines that the particular peer is a potential slow peer based on a first type of indicia, wherein a slow peer is a peer that cannot keep up with a rate at which the router generates update messages over a prolonged period of time. The router confirms that one or more second types of indicia are consistent with the particular peer being a slow peer. In response to the confirmation, the router determines that the particular peer is a slow peer.

Abstract translation: 在一个实施例中，路由器从与诸如边界网关协议（BGP）的外部网关协议（EGP）一起使用的原始更新组中选择特定对等体。 原始更新组包括共享相同出站策略并且从路由器接收路由表信息的公共更新消息的路由器的多个对等体。 路由器基于第一类型的标记确定特定对等体是潜在的慢对等体，其中慢对等体是不能跟上路由器在较长时间段内生成更新消息的速率的对等体。 路由器确认一个或多个第二类型的标记与特定的对等体是慢对等体一致。 响应于确认，路由器确定特定对等体是慢对等体。

公开(公告)号：US09154541B2

公开(公告)日：2015-10-06

申请号：US13861210

申请日：2013-04-11

Applicant: Cisco Technology, Inc.

Inventor： Vamsidhar Valluri ,  Anantha Ramaiah ,  Kaushik Biswas

IPC: H04L12/28 ,  H04L29/08 ,  H04L12/66

CPC classification number: H04L67/02 ,  H04L12/66

Abstract: In one embodiment, an apparatus comprises logic for optimizing return traffic paths using network address translation (NAT). The logic is operable to receive outbound data from a source node in a source network, and to replace a source address in a source address field in the outbound data with a first address from a first address pool associated with a first connection. The logic is operable to determine that return traffic on the first connection needs to be switched over to a second connection, where a second address pool is associated with the second connection. The logic is operable to generate a mapping that associates the first address with a second address from the second address pool and, based on the mapping, to replace the first address in the source address field in the outbound data with the second address. The logic is also operable to send the outbound data to the destination node over the second connection.

Abstract translation: 在一个实施例中，装置包括用于使用网络地址转换（NAT）来优化返回业务路径的逻辑。 该逻辑可操作以从源网络中的源节点接收出站数据，并且使用来自与第一连接相关联的第一地址池的第一地址来替换出站数据中的源地址字段中的源地址。 逻辑可操作以确定第一连接上的返回流量需要切换到第二连接，其中第二地址池与第二连接相关联。 逻辑可操作以生成将第一地址与来自第二地址池的第二地址相关联的映射，并且基于该映射，以用第二地址替换出站数据中的源地址字段中的第一地址。 该逻辑还可用于通过第二连接将出站数据发送到目的地节点。