Method and apparatus for filtering data packets
US8355324B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2007 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0428
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method and apparatus for filtering received data packets. A hierarchical tree is maintained. The tree includes nodes organized in a plurality of levels. Each level above a root node of the tree has one or more of the nodes, with each of the one or more of the nodes corresponding to a particular value of a segment of an Internet Protocol (IP) address. The segment is the same for each node of a particular level of the tree. Each node at a particular level of the tree stores a number representative of the number of received packets having the same value for the segment of the IP address associated with the particular level. Some of the received data packets are filtered out based on the hierarchical tree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.