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    • 3. 发明授权
    • Dynamic data tunnelling
    • 动态数据隧道
    • US06778541B2
    • 2004-08-17
    • US09727644
    • 2000-12-01
    • Allen HoustonPaul FeeChristopher MurtonEwart TempestPhilip Christian
    • Allen HoustonPaul FeeChristopher MurtonEwart TempestPhilip Christian
    • H04L1256
    • H04L12/4633H04L45/02H04L45/026H04L45/04
    • The present invention relates to data tunnelling and in one embodiment to the tunnelling of IP (Internet Protocol) data across an OSI (Open Systems Interconnect) network. In the preferred embodiment, network elements include both an OSI stack and an IP stack, and a respective directory of OSI addresses and corresponding IP subnets. Each network element generates a routing data packet, conveniently a Link State Packet (LSP), which includes the OSI address and IP subnet(s) associated with that network element. The LSPs are distributed across the network in normal manner. Upon receipt of an LSP from another network element, each network element updates its respective directory in respect of said other network element. Thus, each directory is automatically updated to reflect changes in the network, particularly in respect of IP subnets. This arrangement significantly reduces the need for manual tunnel configuration in the network. In an alternative embodiment, the invention provides dynamic data tunnelling of OSI data over an IP network.
    • 本发明涉及数据隧道,在一个实施例中涉及跨越OSI(开放系统互连)网络的IP(因特网协议)数据的隧道传输。 在优选实施例中,网络元件包括OSI堆栈和IP堆栈以及OSI地址和对应的IP子网的相应目录。 每个网元产生路由数据包,方便地包括链路状态分组(LSP),其包括与该网络元件相关联的OSI地址和IP子网。 LSP以正常方式分布在网络中。 在从另一网络元件接收到LSP时,每个网络元件相对于所述另一网络元件更新其相应的目录。 因此,每个目录被自动更新以反映网络中的变化,特别是在IP子网方面。 这种布置显着地减少了在网络中手动隧道配置的需要。 在替代实施例中,本发明通过IP网络提供OSI数据的动态数据隧道传输。