Reception apparatus for VPN optimization by defragmentation and deduplication and method
AssigneeBarracuda Networks, Inc.
InventorsSubrahmanyam Ongole, Sridhar Srinivasan
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Abstract
A reception 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 from a primary apparatus. Only data paragraphs which are not previously cached at satellite are received. The data object is integrated from stored and newly transmitted data paragraphs and transmitted to its destination IP address.
Claims12
A method for operation of a reception apparatus to receive defragmented and de-duplicated data object packets, the apparatus comprising:
- at least one network interface, a primary cache store, a primary transfer diary store, and a data object integrator;
- the method comprising:
- receiving and storing into primary cache store at least one data paragraph corresponding to a hash;
- storing into primary transfer diary store a source of the data paragraph corresponding to the hash and a time of most recent usage;
- and
- receiving a data object integration packet containing at least one hash and a remainder;
- integrating a data object by reading data paragraphs from the primary cache store and concatenating the data paragraphs and the remainder;
- delivering the reconstituted data object to its destination;
- and
- within a circuit for reception of a pending transfer:
- receiving a hash from a pending transfer transmitter corresponding to a data paragraph,
- determining from a primary transfer diary store that the hash is already stored in a primary cache store, and
- transmitting to a satellite transfer store an update on the status of the hash, whereby the satellite transfer diary store changes the status of a pending transfer from pending to past and utilization of a communications channel is optimized by de-duplication.
A reception apparatus comprises:
- at least one network interface,
- a satellite cache store, and
- a data object integrator;
- the network interface(s) communicatively coupled to the data object integrator and to the satellite cache store;
- a circuit for reception of a pending transfer, the circuit for reception of a pending transfer coupled to
- a circuit for transmission of a pending transfer,
- the circuit for reception of a pending transfer coupled to
- a primary transfer diary store, and the circuit for reception of a pending transfer coupled to
- a satellite transfer diary store.
Dependencies are inferred from the claim text.