公开(公告)号：US5572528A

公开(公告)日：1996-11-05

申请号：US408230

申请日：1995-03-20

申请人： Pauline Shuen

发明人： Pauline Shuen

IPC分类号： H04L12/28 ,  H04L12/46

CPC分类号： H04L12/4604

摘要： An internetwork including a plurality of local area networks may include wireless and hard-wired local area networks. The internetwork may also include wide area network links between routers. The system includes routers between networks, which may be bridged networks. Certain routers are configured as home routers. Home routers bind two addresses for each mobile node on a given network when that node logs-in with a home router. Mobile nodes log-in with a home router that assigns a virtual address that does not change throughout a session. Each time, a mobile node roams to another network across a router boundary, the virtual address remains the same and all packets directed to the mobile node are received by the home router which advertises that it can reach the mobile node. As the mobile node roams, it reports back to the home router a local address to which the home router forwards all packets directed originally by correspondent nodes to the virtual address. Mobile nodes may log-in to a router many hops removed from a local area network of the situs. Mobile nodes may also roam across wide area links. The system is transparent to a user.

摘要翻译： 包括多个局域网的互联网络可以包括无线和硬连线局域网。 互联网络还可以包括路由器之间的广域网络链路。 该系统包括网络之间的路由器，其可以是桥接网络。 某些路由器配置为家庭路由器。 家庭路由器在给定网络上的每个移动节点绑定两个地址，当该节点登录到家庭路由器时。 移动节点使用归属路由器登录，分配在整个会话期间不改变的虚拟地址。 每次移动节点跨越路由器边界漫游到另一个网络时，虚拟地址保持相同，并且由归属路由器接收指向移动节点的所有分组，该归属路由器通告其可以到达移动节点。 当移动节点漫游时，它向家庭路由器报告本地地址，归属路由器将原始由对端​​节点指导的所有分组转发到虚拟地址。 移动节点可以登录到路由器，从地点的局域网去除许多跳。 移动节点也可以漫游广域链路。 系统对用户是透明的。