Distinguishing between connectivity verification availability and forwarding protocol functionality in a computer network
    61.
    发明授权
    Distinguishing between connectivity verification availability and forwarding protocol functionality in a computer network 有权
    区分计算机网络中的连接性验证可用性和转发协议功能

    公开(公告)号:US09166877B2

    公开(公告)日:2015-10-20

    申请号:US13861939

    申请日:2013-04-12

    IPC分类号: G01R31/08 H04L12/24 H04L29/06

    CPC分类号: H04L41/0695 H04L69/16

    摘要: In one embodiment, a local network device transmits a connectivity verification protocol control message over a link to a remote network device to attempt to establish a connectivity verification protocol session with the remote network device. In response to non-receipt of a returned connectivity verification protocol control message from the remote network device, the local network device determines that there is an inability to establish a connectivity verification protocol session with the remote network device. The local network device then sends a connectivity verification protocol echo message over the link to the remote network device without establishment of a connectivity verification protocol session. The echo message is sent using a forwarding protocol. In response to receipt of a reply to the connectivity verification protocol echo message from the remote network device, the local network device determines that the forwarding protocol is functioning and uses the link to forward data traffic to the remote network device.

    摘要翻译: 在一个实施例中,本地网络设备通过到远程网络设备的链路发送连接性验证协议控制消息,以尝试与远程网络设备建立连接性验证协议会话。 响应于从远程网络设备未收到返回的连接性验证协议控制消息,本地网络设备确定无法与远程网络设备建立连接性验证协议会话。 然后,本地网络设备通过链路向远程网络设备发送连接验证协议回传消息,而不建立连接性验证协议会话。 使用转发协议发送回发消息。 响应于从远程网络设备接收到对连接性验证协议回传消息的回复,本地网络设备确定转发协议正在工作,并使用链路将数据业务转发到远程网络设备。

    METHOD FOR IMPLICIT SESSION ROUTING
    62.
    发明申请
    METHOD FOR IMPLICIT SESSION ROUTING 有权
    隐性会话路由方法

    公开(公告)号:US20150172170A1

    公开(公告)日:2015-06-18

    申请号:US14108994

    申请日:2013-12-17

    IPC分类号: H04L12/733

    摘要: An example method is provided in one example embodiment and includes receiving a packet of a session from a previous hop router at a service zone of a service chain; recording the previous hop router for the session; determining an appliance to service the packet in the service zone using load balancing; recording an appliance identity for servicing the session in the service zone; determining a next hop router in the service chain for the packet using load balancing; and recording the next hop router for the session.

    摘要翻译: 在一个示例实施例中提供了示例性方法,并且包括从服务链的服务区的前一跳路由器接收会话的分组; 记录会话的上一跳路由器; 确定使用负载平衡来服务所述服务区中的分组的设备; 记录在服务区域中为会话服务的设备身份; 使用负载平衡确定所述分组的服务链中的下一跳路由器; 并为会话记录下一跳路由器。

    Connection verification for MPLS label switched paths and pseudowires
    63.
    发明授权
    Connection verification for MPLS label switched paths and pseudowires 有权
    MPLS标签交换路径和伪线的连接验证

    公开(公告)号:US08976682B2

    公开(公告)日:2015-03-10

    申请号:US13760854

    申请日:2013-02-06

    摘要: In one embodiment, a maintenance intermediate point (MIP) receives a packet traveling along a multi-protocol label switching (MPLS) label switched path (LSP) that extends from a first maintenance end point (MEP) to a second MEP. The receiving MIP decrements a time-to-live (TTL) value in a header of the packet. In response the TTL value in the header of the packet equaling a particular value, the receiving MIP examines an associated channel header (ACH) field in an operations, administration, and maintenance (OAM) message stored in a payload of the packet, and determines a particular OAM function to perform based on a code in the ACH field. The receiving MIP performs the particular OAM function.

    摘要翻译: 在一个实施例中,维护中间点(MIP)接收沿着从第一维护终点(MEP)延伸到第二MEP的多协议标签交换(MPLS)标签交换路径(LSP)行进的分组。 接收MIP减少分组报头中的生存时间(TTL)值。 响应于等于特定值的分组的报头中的TTL值,接收MIP检查存储在分组的有效载荷中的操作,管理和维护(OAM)消息中的相关联的信道报头(ACH)字段,并且确定 基于ACH字段中的代码执行的特定OAM功能。 接收MIP执行特定的OAM功能。

    OPERATING MPLS LABEL SWITCHED PATHS AND MPLS PSEUDOWIRE IN LOOPBACK MODE
    64.
    发明申请
    OPERATING MPLS LABEL SWITCHED PATHS AND MPLS PSEUDOWIRE IN LOOPBACK MODE 审中-公开
    在循环模式下操作MPLS标签交换模式和MPLS PSEUDOWIRE

    公开(公告)号:US20130155877A1

    公开(公告)日:2013-06-20

    申请号:US13770624

    申请日:2013-02-19

    IPC分类号: H04L12/26

    摘要: In one embodiment, a circuit that extends between a head-end label switching router (LSR) and a tail-end LSR and traverses one or more intermediate LSRs is locked to data plane traffic. The head-end LSR transmits a packet along the circuit that includes a particular time-to-live (TTL) value configured to expire at a particular intermediate LSR at which loopback is to occur. The circuit is used in a loopback mode. The head-end LSR transmits along the circuit a packet that includes a cease loopback request. The circuit ceases to be used in the loopback mode. The circuit is unlocked to permit the circuit to pass data plane traffic.

    摘要翻译: 在一个实施例中,在头端标签交换路由器(LSR)和尾端LSR之间延伸并且遍历一个或多个中间LSR的电路被锁定到数据平面业务。 前端LSR沿着电路发送包括特定生存时间(TTL)值的数据包,配置为在发生环回的特定中间LSR处到期。 该电路用于环回模式。 前端LSR沿着电路传输包括停止回送请求的数据包。 电路不再用于环回模式。 电路被解锁以允许电路通过数据平面流量。