If it is not a pure two-way path which includes some asymmetric links, the source needs to spread the RACK along the route and inform the route-related nodes to establish the corresponding route.
如果找到的路由不是纯双向链路，则源节点还需要将RACK报文沿找到的回路路由循环一次，通过RACK的传播来通知中间节点建立起相应的路由。
If it is not a pure two-way path which includes some asymmetric links, the source needs to spread the RACK along the route and inform the route-related nodes to establish the corresponding route.
如果找到的路由不是纯双向链路，则源节点还需要将RACK报文沿找到的回路路由循环一次，通过RACK的传播来通知中间节点建立起相应的路由。
应用推荐