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US 8,559,450 B2Granted
Transmission apparatus for VPN optimization by defragmentation and deduplication and method
AssigneeBarracuda Networks, Inc.
InventorsSubrahmanyam Ongole, Sridhar Srinivasan
Life of this patent
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Abstract
A transmission apparatus for optimizing a virtual private network operates by defragmenting and deduplicating transfer of variable sized blocks. A large data object is converted to a plurality of data paragraphs by a fingerprinting method. Each data paragraph is cached and hashed. The hashes are transmitted to at least one satellite apparatus. Only data paragraphs which are not previously cached at each satellite are transferred.
Claims9
A transmission apparatus which comprises:
- a circuit for generation of a data paragraph, a hash, and a remainder, a satellite cache store, a satellite transfer diary store;
- a circuit which packs a plurality of hashes and a remainder into a packet, the circuits communicatively coupled to each other circuit;
- a circuit for transmission of a pending transfer;
- a circuit which determines when data paragraphs corresponding to hashes are located at primary cache store, and
- at least one network interface, the circuits and network interface communicatively coupled to each other.
2 more elements
Dependencies are inferred from the claim text.