发明名称 |
PATENT LATENCY MONITORING IN SOFTWARE-DEFINED NETWORKS |
摘要 |
In a software defined network having switches including first and last switches and intermediate switches, wherein a default routing path exists between the first and last switches, a system and method are provided for computing path latency. The method includes inserting a respective monitoring rule(s) in each switch, mandating for each switch, forwarding a received rule matching packet to a next switch, and further mandating for the first switch and the last switch, sending a PacketIn message to a controller. The method includes inserting, in each switch, a respective monitoring probe(s) matching the respective monitoring rule(s) in a same switch to initiate mandates specified by the respective monitoring rule(s) in the same switch responsive to an arrival of the packet thereat. The method includes time-stamping the PacketIn messages to generate PacketIn timestamps, aggregating the PacketIn timestamps, and estimating the path latency from an aggregation of PacketIn timestamps. |
申请公布号 |
WO2015034564(A1) |
申请公布日期 |
2015.03.12 |
申请号 |
WO2014US42246 |
申请日期 |
2014.06.13 |
申请人 |
NEC LABORATORIES AMERICA, INC. |
发明人 |
LUMEZANU, CRISTIAN;YU, CURTIS;SHARMA, ABHISHEK;JIANG, GUOFEI;XU, QIANG |
分类号 |
H04L12/801;H04L12/26;H04L12/931 |
主分类号 |
H04L12/801 |
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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