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Mechanism for implementing multiple logical routers within a single physical router

机译:在单个物理路由器中实现多个逻辑路由器的机制

摘要

A mechanism is disclosed for enabling a plurality of logical routers to be implemented within a single physical router. The logical routers emulate the behavior of interconnected, standalone routers. For example, the logical routers may be made aware of the presence of other logical routers within the same physical router. The logical routers may also have internal “links” to each other. In addition, the logical routers may send routing information to each other. Thus, to each other and to routers external to the single physical router, the logical routers appear as if they are interconnected standalone routers. The logical routers may be further endowed with an ability to determine whether the next hop for a set of information (e.g. a packet) is to a logical router within the same physical router or to an external router. The logical routers take advantage of this distinction to perform routing between logical routers more efficiently.
机译:公开了一种用于使多个逻辑路由器能够在单个物理路由器内实现的机制。逻辑路由器模拟互连的独立路由器的行为。例如,可以使逻辑路由器知道同一物理路由器内其他逻辑路由器的存在。逻辑路由器之间也可能具有内部“链接”。另外,逻辑路由器可以彼此发送路由信息。因此,逻辑路由器彼此之间以及单个物理路由器外部的路由器之间就好像它们是互连的独立路由器一样。逻辑路由器可以进一步具有确定一组信息(例如,分组)的下一跳是去往同一物理路由器内的逻辑路由器还是去往外部路由器的能力。逻辑路由器利用这一区别来更有效地执行逻辑路由器之间的路由。

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