发明名称 |
Architecture to support a single system image across multiple network access servers |
摘要 |
The present invention provides a modular architecture for connecting a plurality of telephone lines to a computer network. The invention binds a plurality of network access servers together so that they form a single system image to clients dialing into the plurality of network access servers. The invention operates by providing a tunneling mechanism for communication between the network access servers. The tunneling mechanism facilitates packet re-forwarding so that a call dialed into a physical port in a network access server can be re-forwarded through a logical port in another network access server. This allows a call to be routed through a physical port in a network access server even if no logical port is available in the network access server. Packet re-forwarding also allows multilink connections through physical ports in multiple network access servers to be routed through a single logical port in a network access server. Packet re-forwarding also provides support for spoofing; if the telephone line is torn down during spoofing, the logical port is maintained so that the connection may be reestablished through a physical port in another network access server. Finally, the present invention supports authentication across multiple network access servers using a security server, by allowing the network access servers to share authentication information.
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申请公布号 |
US6256305(B1) |
申请公布日期 |
2001.07.03 |
申请号 |
US19990328191 |
申请日期 |
1999.06.08 |
申请人 |
3COM CORPORATION |
发明人 |
CHAU WING CHEONG;LEU DARREN;LIU TZE-JIAN;NILAKANTAN CHANDY;PAO JEFFREY KAIPING;SUN TSYR-SHYA JOE;TAI WAYMING DANIEL;WANG XIAOHU |
分类号 |
H04L12/46;H04L12/56;H04L29/06;H04M11/06;(IPC1-7):H04L12/02 |
主分类号 |
H04L12/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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