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反向隧道是由移动节点 (MH)到其家乡代理 (HA)的隧道 ,始于移动节点的转交地址 ,终止于家乡代理。反向隧道的建立使得位于外地网络上的移动节点可以建立拓扑正确的数据包 ,以保证其能在设置了入口过滤路由器的外地网络上建立通信连接。
The reverse tunnel is the tunnel from the Mobile Node (MH) to its home agent (HA), starting with the care-of address of the mobile node and terminating at the home agent. The reverse tunneling allows mobile nodes located in the foreign network to set up a data packet with the correct topology so as to ensure that they can set up a communication connection on the foreign network where the ingress filter router is set up.