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1. 发明申请

WO2017209923A1 DETECTING SOURCE NETWORK ADDRESS TRANSLATION IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中检测源网络地址转换
公开(公告)号：WO2017209923A1
公开(公告)日：2017-12-07
申请号：PCT/US2017/032475
申请日：2017-05-12
申请人： 128 TECHNOLOGY, INC.
发明人： MENON, Abilash , PENFIELD, Robert , KAPLAN, Hadriel S.
IPC分类号： H04L12/28 , H04L12/58
CPC分类号： H04L43/0811 , H04L12/4633 , H04L61/2521 , H04L61/256
摘要： Two nodes in a communication system exchange link monitoring protocol messages including special metadata that allows each node to determine the status of source NAT on communication links to and from the other node, e.g., if source NAT is present on the communication link, or if there is a change in source NAT configuration (e.g., from enabled to disabled, from disabled to enabled, or from one translation to another translation). The special metadata also allows true source information (e.g., source address and source port number) to be conveyed between nodes even in the presence of source NAT, because the source NAT device does not change the metadata in the message because the metadata is considered to be part of the message payload. In certain exemplary embodiments, knowledge regarding the presence of source NAT devices as well as the true source information conveyed through the source NAT devices via the special metadata can be used in the context of "stateful" routing.
摘要翻译：通信系统中的两个节点交换包括特殊元数据的链路监视协议消息，所述特殊元数据允许每个节点确定去往和来自另一节点的通信链路上的源NAT的状态，例如，如果源NAT存在在通信链路上，或者如果源NAT配置有变化（例如，从启用到禁用，从禁用到启用，或从一个翻译到另一个翻译）。即使存在源NAT，特殊元数据也允许真正的源信息（例如，源地址和源端口号）在节点之间传送，因为源NAT设备不会更改消息中的元数据，因为元数据被认为是成为消息有效载荷的一部分。在某些示例性实施例中，关于源NAT设备的存在的知识以及通过源NAT设备经由特定元数据传送的真实源信息可以在“有状态” 路由。

2. 发明申请

WO2017209925A1 FLOW MODIFICATION INCLUDING SHARED CONTEXT 审中-公开
标题翻译：流程修改包括共享语境
公开(公告)号：WO2017209925A1
公开(公告)日：2017-12-07
申请号：PCT/US2017/032478
申请日：2017-05-12
申请人： 128 TECHNOLOGY, INC.
发明人： MENON, Abilash , YUNGELSON, Anna , MCCULLEY, Soctt A. , PENFIELD, Robert
IPC分类号： H04L12/707 , H04L12/801
摘要： Routing packets by a router involves establishing a first flow configured for forwarding the packets from a first ingress interface to a first egress interface of the router; determining a condition to modify the first flow; deactivating the first flow; establishing a second flow configured for forwarding the packets from at least one of (1) the first ingress interface to a second egress interface, (2) a second ingress interface to the first egress interface, or (3) a second ingress interface to a second egress interface; and activating the second flow.
摘要翻译：由路由器路由分组涉及建立被配置用于将分组从第一入口接口转发到路由器的第一出口接口的第一流; 确定修改第一流的条件; 停用第一流程; （1）所述第一入口接口至第二出口接口，（2）至所述第一出口接口的第二入口接口，或（3）至所述第一入口接口的第二入口接口，第二出口接口; 并激活第二个流程。

3. 发明申请

WO2020256931A1 IN-LINE PERFORMANCE MONITORING 审中-公开
公开(公告)号：WO2020256931A1
公开(公告)日：2020-12-24
申请号：PCT/US2020/035753
申请日：2020-06-02
申请人： 128 TECHNOLOGY, INC.
发明人： MCCULLEY, Scott, A. , MENON, Abilash , YUNGELSON, Anya
IPC分类号： H04L12/26 , H04J1/16
摘要： One function of a communications network, or of nodes in such a network, is to gather data that is useful in assessing network performance, and quantifying metrics of node and/ or network performance. Various embodiments disclosed herein improve the ability of nodes and networks to gather such data, and quantify metrics of node and/ or network performance by selectively marking existing network traffic, and in preferred embodiments without having to dilute network traffic by generating and transmitting dummy data packets.

4. 发明申请

WO2017209943A1 REVERSE FORWARDING INFORMATION BASE ENFORCEMENT 审中-公开
标题翻译：反向转发信息基础实施
公开(公告)号：WO2017209943A1
公开(公告)日：2017-12-07
申请号：PCT/US2017/032905
申请日：2017-05-16
申请人： 128 TECHNOLOGY, INC.
发明人： MENON, Abilash , PENFIELD, Robert , KAPLAN, Hadriel, S.
IPC分类号： H04L29/00 , H04L12/701
摘要： In exemplary embodiments of the present invention, a router determines whether or not to establish a stateful routing session based on the suitability of one or more candidate return path interfaces. This determination is typically made at the time a first packet for a new session arrives at the router on a given ingress interface. In some cases, the router may be configured to require that the ingress interface be used for the return path of the session, in which case the router may evaluate whether the ingress interface is suitable for the return path and may drop the session if the ingress interface is deemed by the router to be unsuitable for the return path. In other cases, the router may be configured to not require that the ingress interface be used for the return path, in which case the router may evaluate whether at least one interface is suitable for the return path and drop the session if no interface is deemed by the router to be suitable for the return path.
摘要翻译：在本发明的示例性实施例中，路由器基于一个或多个候选返回路径接口的适合性来确定是否建立有状态路由会话。该确定通常在新会话的第一个分组到达给定入口接口上的路由器时进行。在一些情况下，路由器可以被配置为要求将入口接口用于会话的返回路径，在这种情况下，路由器可以评估入口接口是否适合返回路径，并且如果入口接口被路由器视为不适合返回路径。在其他情况下，路由器可以被配置为不要求入口接口用于返回路径，在这种情况下，路由器可以评估至少一个接口是否适合返回路径，并且如果没有接口被认为是丢弃会话通过路由器适合返回路径。

5. 发明申请

WO2017209932A1 LINK STATUS MONITORING BASED ON PACKET LOSS DETECTION 审中-公开
标题翻译：基于数据包丢失检测的链路状态监测
公开(公告)号：WO2017209932A1
公开(公告)日：2017-12-07
申请号：PCT/US2017/032702
申请日：2017-05-15
申请人： 128 TECHNOLOGY, INC.
发明人： MENON, Abilash , PENFIELD, Robert , KAPLAN, Hadriel, S. , TIMMONS, Patrick
IPC分类号： H04L12/26
CPC分类号： H04L43/0829 , H04L43/0811 , H04L43/10 , H04L45/28 , H04L45/70 , H04L47/34 , H04L49/555
摘要： In exemplary embodiments of the present invention, special metadata is added to link monitoring protocol messages exchanged by pairs of adjacent nodes to allow such nodes to detect communication link failures and determine whether the failure affects an incoming communication link or an outgoing communication link. The link monitoring protocol messages may be augmented BFD messages.
摘要翻译：在本发明的示例性实施例中，添加特殊元数据以链接由相邻节点对交换的监控协议消息，以允许这些节点检测通信链路故障并确定故障是否影响传入通信链路或传出通信链接。链路监控协议消息可以是增强的BFD消息。

6. 发明申请

WO2018067328A1 ROUTER WITH BILATERAL TCP SESSION MONITORING 审中-公开
标题翻译：具有双边TCP会话监控的路由器
公开(公告)号：WO2018067328A1
公开(公告)日：2018-04-12
申请号：PCT/US2017/052997
申请日：2017-09-22
申请人： 128 TECHNOLOGY, INC.
发明人： JAFFER, Sarah, V. , MENON, Abilash , YUNGELSON, Anna , TIMMONS, Patrick
IPC分类号： H04L1/08 , H04L29/06 , H04L12/24 , H04L12/26
摘要： A router is specially configured to implement a bilateral TCP state machine to monitor the status of TCP sessions based on TCP sequence numbers in both forward session packets and return session packets received by the router for a TCP bi-flow session. Among other things, the router may determine the status of a TCP session, for example, based on statistical information such as the number or rate of errors detected (e.g., the number of dropped packets, duplicated packets, out-of-sequence packets, and/or out-of-window packets). Each router is typically configured to collect and store status information and optionally also to use the status information in making intelligent routing decisions, such as, for example, deciding whether or not to forward a particular packet, deciding whether to reconfigure a bi-flow routing session, or updating routing table information used for routing packets.
摘要翻译：路由器专门配置为实现双边TCP状态机，以基于两个正向会话分组中的TCP序列号来监视TCP会话的状态，并返回由路由器接收的TCP双向会话分组，流程会话。除此之外，路由器可以例如基于诸如检测到的错误的数量或速率之类的统计信息来确定TCP会话的状态（例如，丢弃的分组的数量，重复的分组，失序的分组，和/或窗外分组）。每个路由器通常被配置为收集和存储状态信息，并且可选地还使用状态信息来进行智能路由决策，例如决定是否转发特定分组，决定是否重新配置双流路由会话或更新用于路由数据包的路由表信息。

7. 发明申请

WO2017209944A1 SESSION CONTINUITY IN THE PRESENCE OF NETWORK ADDRESS TRANSLATION 审中-公开
标题翻译：会话连续性在网络地址转换中的应用
公开(公告)号：WO2017209944A1
公开(公告)日：2017-12-07
申请号：PCT/US2017/032907
申请日：2017-05-16
申请人： 128 TECHNOLOGY, INC.
发明人： MENON, Abilash , YUNGELSON, Anna , MCCULLEY, Scott, A. , PENFIELD, Robert , MENDEZ CIRERA, Francisco, J. , SULLIVAN, Thomas, E.
IPC分类号： H04L12/741 , H04L1/00
CPC分类号： H04L45/38 , H04L61/2514 , H04L67/142
摘要： Embodiments of the present invention provide for continuity of "stateful" routing sessions in the presence of source network address translation (NAT). Specifically, a stateful routing session may be moved from one routing path to another routing path, e.g., due to a routing change in the communication network, where the routing paths have different source NAT status. For example, the stateful routing session may be moved from a path having no source NAT to a path having source NAT, from a path having source NAT to a path having no source NAT, or from paths having different source network address translations. When a stateful routing session is moved from an existing routing path to a new routing path, the routers detect the routing change based on the change in source NAT status using a special link monitoring protocol. Upon detecting the change in source NAT status, session metadata is included in at least the first packet forwarded following detection of the change in source NAT status so that the stateful routing session can continue without interruption.
摘要翻译：本发明的实施例提供了“有状态”的连续性，在存在源网络地址转换（NAT）的情况下路由会话。具体而言，例如，由于通信网络中的路由改变，路由路径具有不同的源NAT状态，有状态路由会话可从一个路由路径移动到另一路由路径。例如，有状态路由会话可以从不具有源NAT的路径移动到具有源NAT的路径，从具有源NAT的路径移动到不具有源NAT的路径，或者从具有不同源网络地址翻译的路径移动。当有状态路由会话从现有路由路径移动到新路由路径时，路由器将使用特殊链路监视协议基于源NAT状态更改检测路由更改。在检测到源NAT状态的变化后，会话元数据至少包括在检测到源NAT状态变化之后转发的第一个分组，使得有状态路由会话可以继续而不中断。

8. 发明申请

WO2017209925A8 FLOW MODIFICATION INCLUDING SHARED CONTEXT 审中-公开
公开(公告)号：WO2017209925A8
公开(公告)日：2017-12-07
申请号：PCT/US2017/032478
申请日：2017-05-12
申请人： 128 TECHNOLOGY, INC.
发明人： MENON, Abilash , YUNGELSON, Anna , MCCULLEY, Scott A. , PENFIELD, Robert
IPC分类号： H04L12/707 , H04L12/801
摘要： Routing packets by a router involves establishing a first flow configured for forwarding the packets from a first ingress interface to a first egress interface of the router; determining a condition to modify the first flow; deactivating the first flow; establishing a second flow configured for forwarding the packets from at least one of (1) the first ingress interface to a second egress interface, (2) a second ingress interface to the first egress interface, or (3) a second ingress interface to a second egress interface; and activating the second flow.

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