发明名称 |
Method and apparatus for self-learning of VPNS from combination of unidirectional tunnels in MPLS/VPN networks |
摘要 |
A technique is provided for implementing deep-packet inspection (DPI) services in a MPLS/VPN configured computer network. The technique employs a novel self-learning algorithm that analyzes data packets belonging to different unidirectional tunnels in the MPLS/VPN network and determines whether the analyzed data packets transport data in the same VPN. If so, the unidirectional tunnels containing the analyzed data packets are associated with a common layer-2 identification (L2ID) value. Unlike conventional flow-classification procedures, the inventive technique classifies a data packet by first associating the data packet with a L2ID value and then classifying the packet as belonging to a particular data flow based on a novel 6-tuple consisting of a conventional 5-tuple plus the packet's L2ID value. Because unidirectional tunnels corresponding to the same application data flow transport data packets having the same set of 6-tuple values, DPI services can apply application-level policies to classified data packets consistent with their 6-tuple flow classifications. |
申请公布号 |
US8270413(B2) |
申请公布日期 |
2012.09.18 |
申请号 |
US20050287824 |
申请日期 |
2005.11.28 |
申请人 |
WEILL OFER;ABRAMOVITZ ASSI;CISCO TECHNOLOGY, INC. |
发明人 |
WEILL OFER;ABRAMOVITZ ASSI |
分类号 |
H04L12/28;H04L12/56 |
主分类号 |
H04L12/28 |
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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