If a node is on a calculated route for a connection it will install forwarding state for the connection.

如果节点处于所计算的用于连接的路由上，则它将为连接安装转发状态。

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And a forwarding table for multicast traffic should be built according to the changes of the forwarding state.

根据转发状态的变化情况，构建出组播数据的二层转发表。

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In traditional IP multicast, data for a given group is forwarded through a tree structure covering the members of this group. The on-tree routers must maintain a per-group forwarding state.

在传统组播中，组播组数据由一棵覆盖所有组成员的组播树进行转发，树上路由器必须保存每一个组播组的转发状态。

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The lean, taut eleven-year-old Cyril (Thomas Doret) escapes from a state center in search of his father, who abandoned him a month earlier and left no forwarding address.

NEWYORKER: The Kid with a Bike