摘要:
Packets are encapsulated and sent from a service node to an application node for applying one or more Layer-4 to Layer-7 services to the packets, with service-applied packets being returned to the service node. An identification of a virtual private network (VPN) may be carried within a request packet, encapsulating a particular packet, sent by a service node to an application node for applying a service to the particular packet; with the corresponding response packet sent to the service node including an identification of the VPN for use by the service node in forwarding the services-applied packet. Additionally, parameters may be included in a request packet to identify a particular service of a general service to be applied to a particular packet encapsulated in the request packet.
摘要:
Packets are encapsulated and sent from a service node to an application node for applying one or more Layer-4 to Layer-7 services to the packets, with service-applied packets being returned to the service node. An identification of a virtual private network (VPN) may be carried within a request packet, encapsulating a particular packet, sent by a service node to an application node for applying a service to the particular packet; with the corresponding response packet sent to the service node including an identification of the VPN for use by the service node node in forwarding the services-applied packet.Additionally, parameters may be included in a request packet to identify a particular service of a general service to be applied to a particular packet encapsulated in the request packet.
摘要:
An application node advertises service(s), using a routing protocol, that it offers to other network nodes. For example, the routing protocol used to advertise service(s) in a Service Provider Network is typically an link-state, Interior Gateway Protocol (IGP), such as, but not limited to, Intermediate System to Intermediate System (IS-IS) or Open Shortest Path First (OSPF). Packets are encapsulated and sent from a service node (e.g., packet switching device) using one or more advertised services applied to a packet by an application node (e.g., a packet switching device and/or computing platform such as a Cisco ASR 1000).
摘要翻译:应用程序节点使用其提供给其他网络节点的路由协议来通告服务。 例如,用于在服务提供商网络中通告服务的路由协议通常是链路状态内部网关协议(IGP),例如但不限于中间系统到中间系统(IS-IS) 或开放最短路径优先(OSPF)。 使用由应用节点(例如,分组交换设备和/或诸如Cisco ASR 1000的计算平台)应用于分组的一个或多个通告的服务,将分组封装并从服务节点(例如,分组交换设备)发送。
摘要:
Packets are encapsulated and sent from a service node (e.g., packet switching device) using one or more services applied to a packet by an application node (e.g., a packet switching device and/or computing platform such as a Cisco ASR 1000) to generate a result, which is used by the service node to process packets of a flow of packets to which the packet belonged. An example of a service applied to a packet is a classification service, such as, but not limited to, using deep packet inspection on the packet to identify a classification result. The service node can, for example, use this classification result to process other packets in a same packet flow, such that all packets of a flow do not need to be, nor typically are, sent to an application node for processing.
摘要翻译:使用由应用节点(例如,分组交换设备和/或诸如Cisco ASR 1000的计算平台)应用于分组的一个或多个服务,从服务节点(例如,分组交换设备)封装并发送分组,以生成 这是由服务节点用于处理分组所属的分组流的分组的结果。 应用于分组的服务的示例是分类服务,诸如但不限于对分组进行深度分组检查以识别分类结果。 例如,服务节点可以使用该分类结果来处理相同分组流中的其他分组,使得流的所有分组不需要也不典型地被发送到应用节点进行处理。
摘要:
An application node advertises service(s), using a label distribution protocol, that it offers to other network nodes and a corresponding label to use to identify these services(s). For example, a Targeted Label Distribution Protocol (tLDP) session may be established between a packet switching device and the application node providing these services to communicate the advertisement. Packets are encapsulated and sent from a service node (e.g., packet switching device) with the corresponding label to have one or more advertised services applied to the packet by an application node (e.g., a packet switching device and/or computing platform such as a Cisco ASR 1000).
摘要翻译:应用程序节点使用其提供给其他网络节点的标签分发协议和用于标识这些服务的相应标签来通告服务。 例如,可以在分组交换设备和提供这些服务的应用节点之间建立目标标签分发协议(tLDP)会话来传送广告。 分组被封装并从具有对应标签的服务节点(例如,分组交换设备)发送,以使应用节点(例如,分组交换设备和/或计算平台,例如, Cisco ASR 1000)。
摘要:
Packets are encapsulated and sent from a service node to one or more application nodes for applying one or more Layer-4 to Layer-7 services to the packets. Before which for a packet, the service node performs a lookup operation based on a destination address of the packet in a routing data structure derived from a exterior network protocol, such as, but not limited to Border Gateway Protocol (BGP). This lookup operation results in the identification of a next hop packet switching device to which the packet would be sent from the service node. The service node includes this identification of the next hop address in the request packet sent to the application node(s). After the service(s) are applied to the packet, an application node will send the services-applied packet to this next hop address. In this manner, application nodes do not need to run an exterior network protocol. Although, they typically will run an Interior Gateway Protocol for identifying how to forward packets to the next hop address.
摘要:
An apparatus and method to provide a portable networking interface for distributed switching systems. Two Application Program Interfaces (APIs) are defined for communication to a Forwarding Database Distribution Library (FDDL). The FDDL sits between network client applications and the switch device driver in order to provide a uniform interface to the switch device driver. Towers may be added to the FDDL to provide additional functionality specific to certain client applications.