发明申请
- 专利标题: Multipoint protected switching ring
- 专利标题(中): 多点保护开关环
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申请号: US11180192申请日: 2005-07-13
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公开(公告)号: US20050243823A1公开(公告)日: 2005-11-03
- 发明人: David Griswold , Prayson Pate , Robert Lynch , Glenn Swope
- 申请人: David Griswold , Prayson Pate , Robert Lynch , Glenn Swope
- 申请人地址: US NC Morrisville
- 专利权人: Overture Networks, Inc.
- 当前专利权人: Overture Networks, Inc.
- 当前专利权人地址: US NC Morrisville
- 主分类号: H04L12/437
- IPC分类号: H04L12/437 ; H04L12/56 ; H04Q11/04
摘要:
Normal 802.3 Ethernet requires a tree topology. If a ring or a loop exists, then packets will be forwarded around the ring indefinitely. If the ring is broken, then there is no possibility of packets being propagated forever. This invention shows how to quickly impose a virtual break in the ring such that all nodes can communicate with each other, and how to remove the virtual break when a real failure occurs. This is accomplished by placing intelligent nodes on the ring that work together to virtually break and restore the ring. An embodiment is disclosed that allows a ring node to bridge user traffic in the case that no switch table entry is present for that traffic. This abstract is provided as an aid to those performing prior art searches and not a limitation on the scope of the claims.
公开/授权文献
- US07339887B2 Multipoint protected switching ring 公开/授权日:2008-03-04
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