Cisco Technology, Inc.

David M Bornstein

James W O'Toole, Jr

Stephen Jeffrey Morris

James O'Toole

Barbara Liskov

In a network having a plurality of routers and also an application running at a plurality of replicas, a system for maintaining a client session between a client and a particular replica includes providing a database of bindings of client request identifiers to replicas. The system further includes a change log of changes made to the database where each entry has an event number. A version vector associated with the database and the change log holds a most recent event number for each router in the network. The system receives updates of change events made at the routers in the network and reconciles the updates with the database and current version vector. The system has data to maintain a client session between the client and the particular replica through repeated requests. Also the system and routers share data so that the client session can be maintained no matter which router handles subsequent client requests.

Method and apparatus for providing sticky bindings using version vectors

A method, a system, and an apparatus are provided for wireless communication of a traffic signal over a network. A message comprising data related to the traffic signal is received. Thereafter, the forwardability of the message is detemined. If forwardable, the message is forwarded. The validity of the message is checked and if found to be valid, information in the data is communicated to a vehicle controller. The message is discarded, if it is found to be invalid.

Method and system for wireless signaling of vehicular traffic

A distributed network-attached storage network provides content distribution using conventional file transfer protocols such as NFS and CIFS. A filer proxy accepts a client request and translates the client request to a file transfer protocol accepted at the file system having the file requested in the client request. The filer proxy generates a file handle for the file containing redundant filer proxy information to be used for failover to a backup filer proxy in the event of a network error or failure of an original filer proxy. The file handle also contains information for network security purposes such as detection of forged file handles.

Method and apparatus for transparent distributed network-attached storage with web cache communication protocol/anycast and file handle redundancy

In a computational device, a technique provides network communications to a virtual machine. In particular, the technique includes receiving a first communications signal having a first address and data from an external device, performing a network address translation operation based on the first communications signal to obtain a second address that identifies the virtual machine and providing a second communications signal having the second address and the data, to the virtual machine. The technique may further include using an external network Internet Protocol address and port identifier and to translate the first communications signal into an internal network Internet Protocol address by accessing an entry of a network address translation table.

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Westwood, MA, United States of America

David M Bornstein