Distributed forwarding in virtual network devices
    1.
    发明授权
    Distributed forwarding in virtual network devices 有权
    虚拟网络设备中的分布式转发

    公开(公告)号:US07839843B2

    公开(公告)日:2010-11-23

    申请号:US10826888

    申请日:2004-04-16

    IPC分类号: H04L12/28 H04L12/56 H04J3/26

    摘要: A virtual network device sub-unit includes an interface to a virtual network device link and a distributed forwarding module. The interface receives a packet, and the distributed forwarding module forwards the packet received by the interface. The distributed forwarding module performs an ingress lookup if the packet includes a multicast destination address and an egress lookup if the packet includes a unicast destination address. If the packet includes a multicast destination address, the distributed forwarding module replicates the packet for each of several outgoing VLANs associated with the multicast destination address. If an additional multicast packet is received via an interface that is not coupled to a virtual network device link, the distributed forwarding module sends at most one copy of the additional multicast packet via the virtual network device link.

    摘要翻译: 虚拟网络设备子单元包括到虚拟网络设备链路的接口和分布式转发模块。 接口接收报文,分布式转发模块转发接口收到的报文。 如果分组包括多播目的地地址和分组包括单播目的地地址的出口查找,则分布式转发模块执行入口查找。 如果分组包含组播目的地址,则分布式转发模块复制与组播目的地址相关联的多个出局VLAN中的每一个的分组。 如果经由未耦合到虚拟网络设备链路的接口接收到附加的多播分组,则分布式转发模块经由虚拟网络设备链路最多发送附加多播分组的一个副本。

    Method and apparatus for detecting support for a protocol defining supplemental headers
    2.
    发明授权
    Method and apparatus for detecting support for a protocol defining supplemental headers 有权
    用于检测支持定义补充头部的协议的方法和装置

    公开(公告)号:US07436836B2

    公开(公告)日:2008-10-14

    申请号:US10881074

    申请日:2004-06-30

    IPC分类号: H04L12/28 H04L12/56

    CPC分类号: H04L12/413

    摘要: Various methods and systems for detecting whether a network device supports a protocol, which defines a supplemental header, are disclosed. One method involves detecting a value within a preamble generated by a sending device and verifying that a header format of a header, also generated by the sending device, conforms to a header format definition of a protocol. The header format definition of the protocol defines a supplemental header. The preamble can be an Ethernet preamble. In one embodiment, the preamble is a converged data link (CDL) preamble or other type of preamble that is used to convey operation, administration and management (OAM) information.

    摘要翻译: 公开了用于检测网络设备是否支持定义辅助头部的协议的各种方法和系统。 一种方法涉及检测由发送设备产生的前同步码内的值,并验证由发送设备生成的报头的报头格式是否符合协议的报头格式定义。 协议的报头格式定义定义了一个补充报头。 前导码可以是以太网前导码。 在一个实施例中,前导码是用于传送操作,管理和管理(OAM)信息的汇聚数据链路(CDL)前导码或其他类型的前同步码。

    Method and apparatus for detecting support for a protocol defining supplemental headers
    3.
    发明申请
    Method and apparatus for detecting support for a protocol defining supplemental headers 有权
    用于检测支持定义补充头部的协议的方法和装置

    公开(公告)号:US20060002299A1

    公开(公告)日:2006-01-05

    申请号:US10881074

    申请日:2004-06-30

    IPC分类号: G01R31/08

    CPC分类号: H04L12/413

    摘要: Various methods and systems for detecting whether a network device supports a protocol, which defines a supplemental header, are disclosed. One method involves detecting a value within a preamble generated by a sending device and verifying that a header format of a header, also generated by the sending device, conforms to a header format definition of a protocol. The header format definition of the protocol defines a supplemental header. The preamble can be an Ethernet preamble. In one embodiment, the preamble is a converged data link (CDL) preamble or other type of preamble that is used to convey operation, administration and management (OAM) information.

    摘要翻译: 公开了用于检测网络设备是否支持定义辅助头部的协议的各种方法和系统。 一种方法涉及检测由发送设备产生的前同步码内的值,并验证由发送设备生成的报头的报头格式是否符合协议的报头格式定义。 协议的报头格式定义定义了一个补充报头。 前导码可以是以太网前导码。 在一个实施例中,前导码是用于传送操作,管理和管理(OAM)信息的汇聚数据链路(CDL)前导码或其他类型的前同步码。

    Distributed forwarding in virtual network devices
    4.
    发明申请
    Distributed forwarding in virtual network devices 有权
    虚拟网络设备中的分布式转发

    公开(公告)号:US20050163115A1

    公开(公告)日:2005-07-28

    申请号:US10826888

    申请日:2004-04-16

    IPC分类号: H04L12/24 H04L12/46 H04L12/56

    摘要: A virtual network device sub-unit includes an interface to a virtual network device link and a distributed forwarding module. The interface receives a packet, and the distributed forwarding module forwards the packet received by the interface. The distributed forwarding module performs an ingress lookup if the packet includes a multicast destination address and an egress lookup if the packet includes a unicast destination address. If the packet includes a multicast destination address, the distributed forwarding module replicates the packet for each of several outgoing VLANs associated with the multicast destination address. If an additional multicast packet is received via an interface that is not coupled to a virtual network device link, the distributed forwarding module sends at most one copy of the additional multicast packet via the virtual network device link.

    摘要翻译: 虚拟网络设备子单元包括到虚拟网络设备链路的接口和分布式转发模块。 接口接收报文,分布式转发模块转发接口收到的报文。 如果分组包括多播目的地地址和分组包括单播目的地地址的出口查找,则分布式转发模块执行入口查找。 如果分组包含组播目的地址,则分布式转发模块复制与组播目的地址相关联的多个出局VLAN中的每一个的分组。 如果经由未耦合到虚拟网络设备链路的接口接收到附加的多播分组,则分布式转发模块经由虚拟网络设备链路最多发送附加多播分组的一个副本。

    Method and Apparatus for Detecting Support for A Protocol Defining Supplemental Headers
    5.
    发明申请
    Method and Apparatus for Detecting Support for A Protocol Defining Supplemental Headers 有权
    用于检测支持协议定义补充标题的方法和装置

    公开(公告)号:US20090086641A1

    公开(公告)日:2009-04-02

    申请号:US12183347

    申请日:2008-07-31

    IPC分类号: G06F11/30

    CPC分类号: H04L12/413

    摘要: Various methods and systems for detecting whether a network device supports a protocol, which defines a supplemental header, are disclosed. One method involves detecting a value within a preamble generated by a sending device and verifying that a header format of a header, also generated by the sending device, conforms to a header format definition of a protocol. The header format definition of the protocol defines a supplemental header. The preamble can be an Ethernet preamble. In one embodiment, the preamble is a converged data link (CDL) preamble or other type of preamble that is used to convey operation, administration and management (OAM) information.

    摘要翻译: 公开了用于检测网络设备是否支持定义辅助头部的协议的各种方法和系统。 一种方法涉及检测由发送设备产生的前同步码内的值,并验证由发送设备生成的报头的报头格式是否符合协议的报头格式定义。 协议的报头格式定义定义了一个补充报头。 前导码可以是以太网前导码。 在一个实施例中,前导码是用于传送操作,管理和管理(OAM)信息的汇聚数据链路(CDL)前导码或其他类型的前同步码。

    Method and apparatus for detecting support for a protocol defining supplemental headers
    6.
    发明授权
    Method and apparatus for detecting support for a protocol defining supplemental headers 有权
    用于检测支持定义补充头部的协议的方法和装置

    公开(公告)号:US08059652B2

    公开(公告)日:2011-11-15

    申请号:US12183347

    申请日:2008-07-31

    IPC分类号: H04L12/56

    CPC分类号: H04L12/413

    摘要: Various methods and systems for detecting whether a network device supports a protocol, which defines a supplemental header, are disclosed. One method involves detecting a value within a preamble generated by a sending device and verifying that a header format of a header, also generated by the sending device, conforms to a header format definition of a protocol. The header format definition of the protocol defines a supplemental header. The preamble can be an Ethernet preamble. In one embodiment, the preamble is a converged data link (CDL) preamble or other type of preamble that is used to convey operation, administration and management (OAM) information.

    摘要翻译: 公开了用于检测网络设备是否支持定义辅助头部的协议的各种方法和系统。 一种方法涉及检测由发送设备产生的前同步码内的值,并验证由发送设备生成的报头的报头格式是否符合协议的报头格式定义。 协议的报头格式定义定义了一个补充报头。 前导码可以是以太网前导码。 在一个实施例中,前导码是用于传送操作,管理和管理(OAM)信息的汇聚数据链路(CDL)前导码或其他类型的前同步码。

    Intelligent adjunct network device
    7.
    发明授权
    Intelligent adjunct network device 有权
    智能辅助网络设备

    公开(公告)号:US07889733B2

    公开(公告)日:2011-02-15

    申请号:US10833377

    申请日:2004-04-28

    IPC分类号: H04L12/28

    摘要: An adjunct network device includes several ports, an uplink interface, and an adjunct forwarding engine coupled to the ports and the uplink interface. A first port is configured to receive a packet, which includes a destination address. The adjunct forwarding engine is configured to send the packet to the uplink interface if the destination address is not associated with any of the ports. The packet is sent to one of the ports if the destination address is associated with the one of the ports.

    摘要翻译: 辅助网络设备包括多个端口,上行链路接口和耦合到端口和上行链路接口的辅助转发引擎。 第一端口被配置为接收包括目的地地址的分组。 如果目的地址不与任何端口相关联,则附加转发引擎被配置为将该分组发送到上行链路接口。 如果目的地址与其中一个端口相关联,则将数据包发送到其中一个端口。

    Intelligent adjunct network device
    8.
    发明授权
    Intelligent adjunct network device 有权
    智能辅助网络设备

    公开(公告)号:US08755382B2

    公开(公告)日:2014-06-17

    申请号:US13026839

    申请日:2011-02-14

    IPC分类号: H04L12/28 H04L12/24 H04L12/54

    摘要: An adjunct network device includes several ports, an uplink interface, and an adjunct forwarding engine coupled to the ports and the uplink interface. A first port is configured to receive a packet, which includes a destination address. The adjunct forwarding engine is configured to send the packet to the uplink interface if the destination address is not associated with any of the ports. The packet is sent to one of the ports if the destination address is associated with the one of the ports.

    摘要翻译: 辅助网络设备包括多个端口,上行链路接口和耦合到端口和上行链路接口的辅助转发引擎。 第一端口被配置为接收包括目的地地址的分组。 如果目的地址不与任何端口相关联,则附加转发引擎被配置为将该分组发送到上行链路接口。 如果目的地址与其中一个端口相关联,则将数据包发送到其中一个端口。