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发明授权
CN1708957B 多层虚拟局域网(VLAN)域映射机制 失效 - 权利终止

多层虚拟局域网(VLAN)域映射机制
摘要：
一种系统在客户虚拟局域网(VLAN)域和提供商VLAN域之间映射网络消息。具体地说，中间网络设备的一个或多个端口包括帧映射逻辑，并且还可以包括多个高度灵活的、可编程的映射表。根据本发明，与客户VLAN相关联的接收到的帧被映射到提供商VLAN，该提供商VLAN作为帧的客户VLAN和在其上接收到帧的具体端口的函数而被选择。帧也可以被映射到提供商CoS值，该提供商CoS值作为帧的客户CoS值、客户VLAN和在其上接收到帧的端口的函数而被选择。提供商VLAN标号和提供商CoS值可以被附加到帧上。提供商域中的转发决定至少部分地基于帧的提供商VLAN标号和提供商CoS值。
摘要（英）：

A system maps network messages between a customer Virtual Local Area Network (VLAN) domain and a provider VLAN domain. Specifically, one or more ports of an intermediate network device includes frame mapping logic and may further include a plurality of highly flexible, programmable mapping tables. In accordance with the invention, a received frame associated with a customer VLAN is mapped to a provider VLAN that is selected as a function of the frame's customer VLAN and the particular port on which the frame is received. The frame may also be mapped to a provider CoS value that is selected asa function of the frame's customer CoS value, customer VLAN and the port on which the frame is received The provider VLAN designation and provider CoS value may be appended to the frame. Forwarding decisions within the provider domain are based, at least in part, on the frame's provider VLAN designation and provider CoS value.

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