公开(公告)号：US20030217180A1

公开(公告)日：2003-11-20

申请号：US10300437

申请日：2002-11-19

Applicant: Cisco Technology Inc.

Inventor： Madhavi Wunnava Chandra ,  Milind M. Kulkarni ,  Kent K. Leung ,  Alpesh Patel

IPC: G06F015/16

CPC classification number: H04W8/04 ,  H04L29/12273 ,  H04L61/2015 ,  H04L61/2053 ,  H04W8/26 ,  H04W60/00 ,  H04W80/04 ,  H04W88/18

Abstract: Methods and apparatuses for allowing mobile nodes to have access to mobility functions after being attached to their home networks. The invention allows a home agent to authenticate a registration request and validate a DHCP-acquired home address even if no mobile bindings currently exist. Typically, a home agent will not create mobility bindings if a mobile node attaches itself to a home agent network segment. By using either cached information or DHCP resources, the home agent can approve a registration request.

Abstract translation: 允许移动节点在附接到其家庭网络之后能够访问移动性功能的方法和装置。 本发明允许归属代理认证注册请求并验证DHCP获取的归属地址，即使当前没有移动绑定。 通常，如果移动节点将自身附加到归属代理网络段，则归属代理将不会创建移动性绑定。 通过使用缓存信息或DHCP资源，归属代理可以批准注册请求。

公开(公告)号：US20040202126A1

公开(公告)日：2004-10-14

申请号：US10139941

申请日：2002-05-06

Applicant: Cisco Technology, Inc.

Inventor： Kent K. Leung ,  Alpesh Patel ,  Stefan B. Raab

IPC: G06F015/173 ,  H04Q007/00

CPC classification number: H04L67/1008 ,  H04L67/1002 ,  H04L67/1036 ,  H04W8/12 ,  H04W80/04

Abstract: In accordance with one aspect of the invention, methods and apparatus for distributing a Mobile IP registration request to one of a plurality of Home Agents are disclosed. A registration request is received from a Foreign Agent to which the Mobile Node has roamed. One of the plurality of Home Agents is selected. The registration request is then forwarded to the selected one of the plurality of Home Agents. The source IP address of the registration request is an IP address of the Foreign Agent to which the Mobile Node has roamed, thereby enabling the selected one of the plurality of Home Agents to send a Mobile IP registration reply directly to the Foreign Agent without interception by the network device.

Abstract translation: 根据本发明的一个方面，公开了用于将移动IP注册请求分发到多个归属代理之一的方法和装置。 从移动节点漫游到的外地代理接收到注册请求。 选择多个归属代理之一。 然后将注册请求转发到多个归属代理中的所选择的一个。 注册请求的源IP地址是移动节点漫游到的外地代理的IP地址，从而使所选择的多个归属代理能够直接向外地代理发送移动IP注册应答，而不被拦截 网络设备。

公开(公告)号：US20030224788A1

公开(公告)日：2003-12-04

申请号：US10150377

申请日：2002-05-17

Applicant: Cisco Technology, Inc.

Inventor： Kent K. Leung ,  Milind M. Kulkarni ,  Alpesh Patel

IPC: H04Q007/20

CPC classification number: H04L12/4633 ,  H04L29/12009 ,  H04L29/12367 ,  H04L29/125 ,  H04L61/2514 ,  H04L61/2564 ,  H04L63/029 ,  H04W8/04 ,  H04W80/04 ,  H04W88/182

Abstract: A method and apparatus for registering a mobile node with a home agent are disclosed. The invention uses a Mobile IP proxy to inform the mobile node of whether the mobile node is in an internal network or a remote network. The mobile node sends out a registration request. From the registration request, the Mobile IP proxy determines whether the mobile node is in the internal network or a remote network. In accordance with one embodiment, the Mobile IP proxy sends a notification when the mobile node is in the internal network. For instance, the notification may be provided in an extension to a registration reply. In addition, a home agent may be assigned and identified in the registration reply. This notification may then be used by both a foreign agent to which the mobile node has roamed and the mobile node to update its information for the mobile node. If the mobile node is in a remote network, the Mobile IP proxy acts as an intermediary, creating tunnels to the care-of address and the home agent. Otherwise, the Mobile IP proxy can allow the mobile node and the home agent to communicate with each other without using the Mobile IP proxy as an intermediary.

Abstract translation: 公开了一种用归属代理登记移动节点的方法和装置。 本发明使用移动IP代理来通知移动节点移动节点是否在内部网络或远程网络中。 移动节点发出注册请求。 从注册请求，移动IP代理确定移动节点是在内部网络还是在远程网络中。 根据一个实施例，当移动节点在内部网络中时，移动IP代理发送通知。 例如，可以在注册答复的扩展中提供通知。 此外，可以在注册答复中分配和识别归属代理。 然后可以由移动节点漫游的外部代理和移动节点更新其用于移动节点的信息的该通知。 如果移动节点在远程网络中，则移动IP代理充当中介，为转交地址和归属代理创建隧道。 否则，移动IP代理可以允许移动节点和归属代理彼此通信，而不使用移动IP代理作为中介。

公开(公告)号：US20040260752A1

公开(公告)日：2004-12-23

申请号：US10600157

申请日：2003-06-19

Applicant: Cisco Technology, Inc.

Inventor： Madhavi W. Chandra ,  Kent K. Leung ,  Parviz Yegani

IPC: G06F015/16

CPC classification number: H04L12/2859 ,  H04L67/14 ,  H04W36/0011 ,  H04W80/04 ,  H04W88/005

Abstract: An invention is disclosed that optimizes resource management within a PDSN. This is accomplished through the modification of functions of a AAA server. Specifically, when a node (e.g., mobile node) is authenticated by a AAA server in response to a request by a target PDSN to which the node has roamed, the AAA server may send a disconnect request message to a source PDSN indicating that the node has moved from the source PDSN. In this manner, the source PDSN is notified that it should terminate its session with the node and release resources associated with the session (e.g., PPP session). The source PDSN may then send a message to the AAA server indicating whether the session was successfully terminated (and whether the resources associated with that session were released).

Abstract translation: 公开了一种优化PDSN内的资源管理的发明。 这是通过修改AAA服务器的功能来实现的。 具体地说，当节点（例如移动节点）由AAA服务器响应于节点所漫游的目标PDSN的请求进行认证时，AAA服务器可以向源PDSN发送断开请求消息，指示该节点 已经从源PDSN移动。 以这种方式，通知源PDSN应该终止与节点的会话并释放与会话相关联的资源（例如，PPP会话）。 源PDSN然后可以向AAA服务器发送指示会话是否已成功终止的消息（以及与该会话相关联的资源是否被释放）。

公开(公告)号：US20040066760A1

公开(公告)日：2004-04-08

申请号：US10366025

申请日：2003-02-12

Applicant: Cisco Technology, Inc., A corporation of California

Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  David C. Forster ,  Kent K. Leung

IPC: H04Q007/00

CPC classification number: H04W8/04 ,  H04L29/06 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/1014 ,  H04L67/1021 ,  H04L67/1036 ,  H04L2029/06054 ,  H04W8/06 ,  H04W8/085 ,  H04W8/12 ,  H04W8/26 ,  H04W28/08 ,  H04W80/04

Abstract: Methods and apparatus for processing registration requests by a Home Agent supporting Mobile IP are disclosed. A registration request is received from each of a plurality of Mobile Nodes, the registration request specifying a care-of address, which may be allocated by the Foreign Agent. A binding is established between each of the plurality of Mobile Nodes and the associated care-of address, each of the plurality of Mobile Nodes being associated with one another. For instance, the plurality of Mobile Nodes may be statically or dynamically assigned the same Home Address. A tunnel is then created between the Home Agent and the care-of address for each of the plurality of Mobile Nodes, thereby enabling a server request to be distributed by the Home Agent to one of the plurality of Mobile Nodes or to a cluster of Mobile Nodes (e.g., associated with the care-of address) via the associated tunnel. For instance, a server request addressed to the Home Address may be forwarded directly to one of the Mobile Nodes assigned that Home Address. Alternatively, when an address such as the care-of address is associated with multiple Mobile Nodes, the Foreign Agent may perform a second level of dispatching such that the server request is dispatched to one of the Mobile Nodes in the cluster.

Abstract translation: 公开了由支持移动IP的归属代理处理注册请求的方法和装置。 从多个移动节点中的每一个接收注册请求，该注册请求指定可由外地代理分配的转交地址。 在多个移动节点中的每个移动节点和相关的转交地址之间建立绑定，多个移动节点中的每一个彼此相关联。 例如，多个移动节点可以静态地或动态地分配相同的归属地址。 然后在归属代理和多个移动节点中的每一个的转交地址之间创建隧道，从而使得归属代理能够将服务器请求分发到多个移动节点之一或者移动的群集 节点（例如，与转交地址相关联）通过相关联的隧道。 例如，寻址到归属地址的服务器请求可以直接转发到分配给归属地址的移动节点之一。 或者，当诸如转交地址的地址与多个移动节点相关联时，外部代理可以执行第二级调度，使得服务器请求被分派到群集中的移动节点之一。

公开(公告)号：US20030123421A1

公开(公告)日：2003-07-03

申请号：US10034302

申请日：2001-12-28

Applicant: Cisco Technology, Inc.

Inventor： Gaetan Feige ,  Rabih A. Dabboussi ,  Kent K. Leung ,  Milind M. Kulkarni

IPC: H04Q007/24

CPC classification number: H04L29/12009 ,  H04L29/12509 ,  H04L61/2567 ,  H04W4/18 ,  H04W8/04 ,  H04W8/26 ,  H04W60/00 ,  H04W80/04

Abstract: Methods and apparatus for establishing communication between a Mobile Node and a Home Agent are disclosed. The Home Agent receives a registration request packet from the Mobile Node, the registration request packet including an IP source address and a Home Agent address. The Home Agent then detects from the registration request packet when network address translation has been performed. When it has been detected that network address translation has been performed, a tunnel is set up between the Home Agent address and the IP source address.

Abstract translation: 公开了用于建立移动节点和归属代理之间的通信的方法和装置。 归属代理从移动节点接收注册请求分组，注册请求分组包括IP源地址和归属代理地址。 当执行网络地址转换时，归属代理随后从注册请求分组中检测。 当检测到已经执行了网络地址转换时，在归属代理地址和IP源地址之间建立隧道。

公开(公告)号：US20040234075A1

公开(公告)日：2004-11-25

申请号：US10866654

申请日：2004-06-10

Applicant: Cisco Technology, Inc., A corporation of California

Inventor： Kent K. Leung

IPC: H04K001/00

CPC classification number: H04L63/08

Abstract: Methods and apparatus for authenticating a mobile node are disclosed. A server is configured to provide a plurality of security associations associated with a plurality of mobile nodes. A packet identifying a mobile node may then be sent to the server from a network device such as a Home Agent. A security association for the mobile node identified in the packet may then be obtained from the server. The security association may be sent to the network device to permit authentication of the mobile node. Alternatively, authentication of the mobile node may be performed at the server by applying the security association.

公开(公告)号：US20040213260A1

公开(公告)日：2004-10-28

申请号：US10426106

申请日：2003-04-28

Applicant: Cisco Technology, Inc.

Inventor： Kent K. Leung ,  Gopal Dommety

IPC: H04L012/56

CPC classification number: H04L29/12311 ,  H04L29/12839 ,  H04L61/2084 ,  H04L61/6022 ,  H04L63/0281 ,  H04L63/1466 ,  H04L69/329 ,  H04W8/26 ,  H04W12/06 ,  H04W12/12 ,  H04W60/00 ,  H04W80/04 ,  H04W88/08 ,  H04W88/182

Abstract: An invention is disclosed that enables proxy Mobile IP registration to be performed in a secure manner. Various security mechanisms may be used independently, or in combination with one another, to authenticate the identity of a node during the registration process. First, an Access Point receiving a packet from a node verifies that the source MAC address identified in the packet is in the Access Point's client association table. In addition, as a second mechanism, the Access Point ensures that a one-to-one mapping exists for the source MAC address and source IP address identified in the packet in a mapping table maintained by the Access Point. As a third mechanism, a binding is not modified in the mobility binding table maintained by the Home Agent unless there is a one-to-one mapping in the mobility binding table between the source MAC address and the source IP address. Similarly, the Foreign Agent may also maintain a mapping between the source IP address and the source MAC address in its visitor table to ensure a one-to-one mapping between a source IP address and the associated MAC address. The MAC address is preferably transmitted in a MAC address extension to the registration request and registration reply packets. In this manner, the Access Point, Home Agent, and Foreign Agent may ascertain the node's MAC address and ensure a one-to-one mapping between the IP address and the MAC address during the registration process.

Abstract translation: 公开了能够以安全的方式执行代理移动IP注册的发明。 各种安全机制可以独立地或彼此组合地使用以在注册过程期间认证节点的身份。 首先，从节点接收分组的接入点验证分组中标识的源MAC地址在接入点的客户端关联表中。 另外，作为第二种机制，接入点确保了由接入点维护的映射表中的源MAC地址和源IP地址中的一个一对一映射。 作为第三种机制，在归属代理维护的移动性绑定表中，绑定不会被修改，除非在源MAC地址和源IP地址之间的迁移绑定表中存在一对一的映射。 类似地，外地代理还可以在其访问者表中保持源IP地址和源MAC地址之间的映射，以确保源IP地址和相关MAC地址之间的一对一映射。 MAC地址优选地以MAC地址扩展发送到注册请求和注册应答分组。 以这种方式，接入点，归属代理和外部代理可以确定节点的MAC地址，并确保在注册过程中IP地址和MAC地址之间的一对一映射。

公开(公告)号：US20040092260A1

公开(公告)日：2004-05-13

申请号：US10265563

申请日：2002-10-03

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  David C. Forster ,  Kent K. Leung

IPC: H04Q007/20

CPC classification number: H04L29/06 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/1021 ,  H04L67/1036 ,  H04L2029/06054 ,  H04W8/04 ,  H04W8/085 ,  H04W8/12 ,  H04W80/04

Abstract: Methods and apparatus for processing registration requests by a Home Agent supporting Mobile IP are disclosed. A registration request is received from each of a plurality of Mobile Nodes, the registration request specifying a care-of address. A binding is established between each of the plurality of Mobile Nodes and the associated care-of address, each of the plurality of Mobile Nodes being associated with one another. For instance, the plurality of Mobile Nodes may be statically or dynamically assigned the same Home Address. A tunnel is then created between the Home Agent and the care-of address for each of the plurality of Mobile Nodes, thereby enabling a server request to be distributed by the Home Agent to one of the plurality of Mobile Nodes via the associated tunnel. For instance, a server request addressed to the Home Address may be forwarded to one of the Mobile Nodes assigned that Home Address.

Abstract translation: 公开了由支持移动IP的归属代理处理注册请求的方法和装置。 从多个移动节点中的每一个接收注册请求，注册请求指定转交地址。 在多个移动节点中的每个移动节点和相关的转交地址之间建立绑定，多个移动节点中的每一个彼此相关联。 例如，多个移动节点可以静态地或动态地分配相同的归属地址。 然后在归属代理和多个移动节点中的每一个的转交地址之间创建隧道，从而使得归属代理能够经由相关联的隧道将服务器请求分发给多个移动节点之一。 例如，寻址到归属地址的服务器请求可以被转发到分配给归属地址的移动节点之一。

公开(公告)号：US20030236827A1

公开(公告)日：2003-12-25

申请号：US10180640

申请日：2002-06-24

Applicant: Cisco Technology, Inc.

Inventor： Alpesh Patel ,  Kent K. Leung ,  Gaetan Feige

IPC: G06F015/16 ,  G06F015/173

CPC classification number: H04W28/18 ,  H04L41/0896 ,  H04L43/0882 ,  H04L47/10 ,  H04L47/263 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163 ,  H04L69/168 ,  H04L69/32 ,  H04W24/00 ,  H04W28/20 ,  H04W36/0011 ,  H04W36/0033 ,  H04W80/00 ,  H04W80/04 ,  H04W80/06

Abstract: An adaptive feedback technique is described for a Mobile IP environment in which Mobile IP mechanisms provide early feedback to mechanisms in the transport layer and/or application layer of a mobile node in response to detection of changes in link characteristics of the communication used by the mobile node to communicate with a data network. Using the early feedback information, appropriate measures may then be taken in order to accommodate the changes in link characteristics. Such appropriate measures may include, for example, providing feedback to media aware applications in order to allow such applications to dynamically adjust their bandwidth requirements to accommodate the new link characteristics, modifying timeout parameters, modifying an encoding formats to accommodate the new link characteristics, notifying participants in a real-time application session of the detected changes in the link characteristics, etc.

Abstract translation: 针对移动IP环境描述了自适应反馈技术，其中移动IP机制响应于移动节点的传输层和/或应用层中的机制的改变而提供对移动节点使用的通信的链路特性的变化的早期反馈 节点与数据网络通信。 使用早期的反馈信息，可以采取适当的措施来适应链路特征的变化。 这样的适当措施可以包括例如向媒体感知应用提供反馈，以便允许这样的应用程序动态地调整其带宽需求以适应新的链路特征，修改超时参数，修改编码格式以适应新的链路特征，通知 参与者在实时应用会话中检测到链接特征的变化等。