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    Network element having a DHCP lease timer
    2.
    发明授权
    Network element having a DHCP lease timer 有权
    具有DHCP租用定时器的网元

    公开(公告)号：US08125993B2

    公开(公告)日：2012-02-28

    申请号：US12542653

    申请日：2009-08-17

    申请人： Peter Arberg ,  Kishore K. Seshadri

    发明人： Peter Arberg ,  Kishore K. Seshadri

    IPC分类号： H04L12/28

    CPC分类号： H04L61/2053 ,  H04L29/12273 ,  H04L61/2015

    摘要： A network element modifying the DHCP lease timer is described. According to one embodiment, an exemplary method includes maintaining, at a network element, DHCP lease time for one or more clients and in response to a DHCP renewal request from a client, on behalf of a DHCP server, providing DHCP renewal services to the client based on lease time information associated with the client without invoking the DHCP server.

    摘要翻译： 描述修改DHCP租约定时器的网元。 根据一个实施例，示例性方法包括在网络元件处维护一个或多个客户端的DHCP租用时间，以及响应来自客户端的代表DHCP服务器的DHCP更新请求，向客户端提供DHCP更新服务 基于与客户端相关联的租约时间信息而不调用DHCP服务器。

    Network Element Having a DHCP Lease Timer
    3.
    发明申请
    Network Element Having a DHCP Lease Timer 有权
    具有DHCP租用定时器的网元

    公开(公告)号：US20090307338A1

    公开(公告)日：2009-12-10

    申请号：US12542653

    申请日：2009-08-17

    申请人： Peter Arberg ,  Kishore K. Seshadri

    发明人： Peter Arberg ,  Kishore K. Seshadri

    IPC分类号： G06F15/177

    CPC分类号： H04L61/2053 ,  H04L29/12273 ,  H04L61/2015

    摘要： A network element modifying the DHCP lease timer is described. According to one embodiment, an exemplary method includes maintaining, at a network element, DHCP lease time for one or more clients and in response to a DHCP renewal request from a client, on behalf of a DHCP server, providing DHCP renewal services to the client based on lease time information associated with the client without invoking the DHCP server.

    摘要翻译： 描述修改DHCP租约定时器的网元。 根据一个实施例，示例性方法包括在网络元件处维护一个或多个客户端的DHCP租用时间，以及响应来自客户端的代表DHCP服务器的DHCP更新请求，向客户端提供DHCP更新服务 基于与客户端相关联的租约时间信息而不调用DHCP服务器。

    Network element modifying the DHCP lease timer
    4.
    发明授权
    Network element modifying the DHCP lease timer 有权
    网元修改DHCP租约定时器

    公开(公告)号：US07577146B2

    公开(公告)日：2009-08-18

    申请号：US10955671

    申请日：2004-09-29

    申请人： Peter Arberg ,  Kishore K. Seshadri

    发明人： Peter Arberg ,  Kishore K. Seshadri

    IPC分类号： H04L12/28

    CPC分类号： H04L61/2053 ,  H04L29/12273 ,  H04L61/2015

    摘要： A network element modifying the DHCP lease timer is described. According to one embodiment, an exemplary method includes maintaining, at a network element, DHCP lease time for one or more clients and in response to a DHCP renewal request from a client, on behalf of a DHCP server, providing DHCP renewal services to the client based on lease time information associated with the client without invoking the DHCP server.

    摘要翻译： 描述修改DHCP租约定时器的网元。 根据一个实施例，示例性方法包括在网络元件处维护一个或多个客户端的DHCP租用时间，以及响应来自客户端的代表DHCP服务器的DHCP更新请求，向客户端提供DHCP更新服务 基于与客户端相关联的租约时间信息而不调用DHCP服务器。

    Use of IP address blocks with default interfaces in a router
    5.
    发明授权
    Use of IP address blocks with default interfaces in a router 有权
    在路由器中使用默认接口的IP地址块

    公开(公告)号：US07430614B2

    公开(公告)日：2008-09-30

    申请号：US10954395

    申请日：2004-09-29

    申请人： Naiming Shen ,  Kishore K. Seshadri

    发明人： Naiming Shen ,  Kishore K. Seshadri

    IPC分类号： G06F15/16

    CPC分类号： H04L29/12283 ,  H04L61/2015 ,  H04L61/2061

    摘要： The use of IP address blocks with default interfaces in a router is described herein. According to one embodiment, an exemplary method includes in response to a request for a first IP address received from a first client at an interface of the network element, assigning the first client an IP address from a first block of IP addresses dynamically allocated from an IP address provider separated from a pool of statically preassigned IP addresses, if there is no IP address remained unassigned in the pool of statically preassigned IP addresses, and advertising reachability information in a network with respect to the first block of the IP addresses dynamically allocated from the IP address provider, such that other entities of the network are aware of the first block of the IP addresses. Other methods and apparatuses are also described.

    摘要翻译： 这里描述了在路由器中使用具有默认接口的IP地址块。 根据一个实施例，一种示例性方法包括响应于在网元的接口处从第一客户端接收到的第一IP地址的请求，从第一客户端向第一客户端分配从第一客户端动态分配的IP地址块的IP地址 IP地址提供者与静态预先分配的IP地址池分离，如果在静态预先分配的IP地址池中没有分配IP地址，并且网络中的广告可达性信息相对于动态分配的IP地址的第一块 IP地址提供商，使得网络的其他实体知道IP地址的第一个块。 还描述了其它方法和装置。

    Optimizing flow detection and reducing control plane processing in a multi-protocol over ATM (MPOA) system
    6.
    发明授权
    Optimizing flow detection and reducing control plane processing in a multi-protocol over ATM (MPOA) system 失效
    通过ATM（MPOA）系统的多协议优化流量检测和减少控制平面处理

    公开(公告)号：US06279035B1

    公开(公告)日：2001-08-21

    申请号：US09058693

    申请日：1998-04-10

    申请人： Brian Brown ,  Jeanne Haney ,  James Mangin ,  Derek H. Pitcher ,  Kishore K. Seshadri

    发明人： Brian Brown ,  Jeanne Haney ,  James Mangin ,  Derek H. Pitcher ,  Kishore K. Seshadri

    IPC分类号： G06F1300

    CPC分类号： H04Q11/0478 ,  H04L2012/5617 ,  H04L2012/5667

    摘要： A method and apparatus for reducing the amount of control plane processing and flow detection required in a Multiprotocol Over ATM (MPOA) system are provided. According to one aspect of the present invention, flow detection processing may be altered based upon a packet's content. A first MPOA client (MPC) may include a plurality of flow detection mechanisms including standard MPOA processing and modified flow detection processing. For example, a flow may be determined to exist when the number of packets to a particular destination within a predetermined time interval exceeds a threshold value. Alternatively, a flow may be determined to exist immediately for certain types of traffic and detection of a flow may be suppressed for other types of traffic. Upon receipt at a first MPC, traffic may be classified based upon any information contained within a packet, including the header, the payload, or portions and/or combinations thereof. Based upon the packet's content, the MPC then selects among the plurality of flow detection mechanisms for purposes of determining whether or not a flow exists. According to another aspect of the present invention, control plane processing may be managed based upon a packet's content. A first MPC determines whether or not a stream of data with which a packet is associated justifies establishing a shortcut between the first MPC and the MPC with which the target is associated. After determining that the shortcut is justified, the first MPC allows or disallows the transmission of a resolution request based upon the packet's content.

    摘要翻译： 提供了一种用于减少多协议ATM（MPOA）系统中所需的控制平面处理和流量检测量的方法和装置。 根据本发明的一个方面，可以基于分组的内容来改变流检测处理。 第一MPOA客户端（MPC）可以包括包括标准MPOA处理和修改的流检测处理的多个流检测机制。 例如，当在预定时间间隔内到特定目的地的分组数量超过阈值时，可以确定存在流程。 或者，可以确定流量可以立即存在于某些类型的业务，并且可以抑制流的检测用于其他类型的业务。 在第一MPC接收时，可以基于分组中包含的任何信息来分类业务，包括报头，有效载荷或其部分和/或其组合。 基于分组的内容，MPC然后在多个流检测机构中选择用于确定流是否存在的目的。 根据本发明的另一方面，可以基于分组的内容来管理控制平面处理。 第一MPC确定数据包相关联的数据流是否与在第一MPC与目标所关联的MPC之间建立快捷方式相对应。 在确定快捷方式是合理的之后，第一MPC允许或不允许基于分组的内容传送解决请求。

    Method and apparatus for performing per-port IP multicast pruning
    7.
    发明授权
    Method and apparatus for performing per-port IP multicast pruning 失效
    用于执行每端口IP组播剪枝的方法和装置

    公开(公告)号：US06370142B1

    公开(公告)日：2002-04-09

    申请号：US08832042

    申请日：1997-04-02

    申请人： Derek Pitcher ,  Kishore K. Seshadri ,  Daniel A. Simone

    发明人： Derek Pitcher ,  Kishore K. Seshadri ,  Daniel A. Simone

    IPC分类号： H04L1228

    CPC分类号： H04L12/5601 ,  H04L49/104 ,  H04L49/256 ,  H04L49/309 ,  H04L49/351 ,  H04Q11/0478

    摘要： A method and apparatus for performing per-port Internet Protocol (IP) multicast pruning, proxying of IP multicast group membership reports, and generating pseudo membership queries for determining IP multicast group membership are provided. A switch may implement per-port IP multicast pruning by establishing a mapping of IP multicast groups to its ports. The mapping is based upon membership reports received from each end-station participating in an IP multicast group. Based upon the mapping, the switch forwards IP multicast packets only to those of the end-stations that are participating in the IP multicast group addressed. Once per-port IP multicast pruning is implemented, multicast routers must process membership reports from all end-stations participating in an IP multicast group. To reduce this burden, a switch may act as a proxy device. The switch receives a membership report identifying an IP multicast group. If the membership report is the first received for the IP multicast group after a membership query, then the switch forwards the membership report. However, if the membership report is not the first received, then the switch discards the membership report. To allow IP multicast group membership determination when no querier is present, a switch determines if another device is currently acting as a querier for a switched network. If not, the switch sends a membership query on one or more of its ports. Responsive to the membership query, an end-station transmits a membership report to the switch. The switch records the IP multicast group membership indicated in the membership report.

    摘要翻译： 提供了一种用于执行每端口因特网协议（IP）组播剪枝的方法和装置，IP组播组成员报告的代理，以及生成用于确定IP组播组成员资格的伪成员查询。 交换机可以通过建立IP组播组到其端口的映射来实现每端口IP组播剪枝。 该映射基于从参与IP多播组的每个终端站接收的成员资格报告。 基于映射，交换机将IP组播数据包转发到正在参与IP组播组寻址的终端站。 一旦实现了每端口IP组播修剪，组播路由器必须处理参与IP组播组的所有终端的成员关系报告。 为了减轻这种负担，交换机可以用作代理设备。 交换机收到标识IP组播组的成员资格报告。 如果成员资格报告是成员查询后首次收到的IP组播组，则交换机转发成员资格报告。 但是，如果成员资格报告不是首次收到，则交换机将丢弃成员资格报告。 为了在不存在查询器的情况下允许IP组播组成员确定，交换机确定另一个设备当前是否作为交换网络的查询器。 如果没有，交换机会在其一个或多个端口上发送成员资格查询。 响应于成员查询，终端向交换机发送成员资格报告。 交换机记录会员报告中指定的IP组播组成员。