Assignee: F5 Networks, Inc.

Location: Seattle, WA
No. of patents: 98

Number	Title	Issue Date
8185617	TCP-over-TCP using multiple TCP streams A system, apparatus, and method for managing TCP over TCP communications using multiple TCP network connections. A plurality of tunneled network connections may be established between network devices. The network devices may employ one of the tunneled network connec...	05/22/2012
8180747	Load sharing cluster file systems Load sharing clusters in which each node is responsible for one or more non-overlapping subset(s) of the cluster namespace and will process only those requests that access file or directory objects in the partitioned namespace that the node controls while redirectin...	05/15/2012
8176164	Method and system for managing network traffic A system and method for directing network connections. The invention enables a network device to direct subsequent connections from a client to a server for accessing resources. A process extracts a persistence key from a received message, and employs the persistenc...	05/08/2012
RE43346	Transaction aggregation in a switched file system Client computers are decoupled from file servers in a computer network, by placing a network node, also termed a file switch or file switch computer, between the client computers and the file servers. To the client computers, the file switch appears to be a file ser...	05/01/2012
8159940	Obtaining high availability using TCP proxy devices The present invention relates to increasing performance of Wide Area Network (WAN) communications and in particular to a redundant proxy device associated with one end of a transport layer connection that monitors packet traffic and selectively reroutes packets to a...	04/17/2012
8150957	Method and system for managing network traffic A system and method for directing network connections. The invention enables a network device to direct subsequent connections from a client to a server for accessing resources. A process extracts a persistence key from a received message, and employs the persistenc...	04/03/2012
8145768	Tuning of SSL session caches based on SSL session IDS Methods, systems, and apparatus are directed towards managing a network communication. A Secured Socket Layer (SSL) session identifier (ID) is received within an SSL handshake protocol message for establishing an SSL connection. The SSL session ID is combined with a...	03/27/2012
8121117	Application layer network traffic prioritization Layer-7 application layer message (“message”) classification is disclosed. A network traffic management device (“NTMD”) receives incoming messages over a first TCP/IP connection from a first network for transmission to a second network. Before transmitting t...	02/21/2012
8117244	Non-disruptive file migration A non-distruptive migration of a native volume from a source server to a destination server performed by a file switch involves converting the source native volume to a native with metadata volume. The native with metadata volume is converted to a mirrored native wi...	02/14/2012
8116222	Methods and systems for embedding traffic state information within ethernet trailers Methods and systems for creating a back channel between two network nodes using a packet trailer. The sending node establishes a communication channel between itself and the destination node. A packet is prepared having a header and a payload. Data associated with t...	02/14/2012
8112491	Methods and systems for providing direct DMA A method and system for efficient direct DMA for processing connection state information or other expediting data packets. One example is the use of a network interface controller to buffer TCP type data packets that may contain connection state information. The con...	02/07/2012
8108554	Method and system for automatically mapping secure network address translations Disclosed is a system and method for providing persistence in network access, by enhancing the likelihood that a gateway that is employed by a server array controller to send a client's message to a resource in another network outside of a local network behind the s...	01/31/2012
8103809	Network devices with multiple direct memory access channels and methods thereof A method, computer readable medium, and a system for communicating with networked clients and servers through a network device includes establishing a plurality of direct memory access (DMA) channels across a host system bus over which a plurality of executing appli...	01/24/2012
8103770	System and method for performing application level persistence A method and apparatus for inserting and examining Cookies in the data streams of HTTP connections for the purpose of persistently directing HTTP connections to the same destination. A network device directs subsequent HTTP connections from the same client to the sa...	01/24/2012
8103746	Method and system for distributing requests for content A method and system for caching content, such as content requested from a server on the World Wide Web. Requests for dynamic content are forwarded directly to a content server to avoid caching data that might only be used once. Requests for static content are forwar...	01/24/2012
8024483	Selective compression for network connections A system, apparatus, and method selectively provides content compression to a client based, in part, on whether the network connection from the client is determined to be a high latency, low-bandwidth connection. The present invention gathers one or more network met...	09/20/2011
8024443	Methods for applying a user defined operation on data relating to a network and devices thereof Methods, computer-readable storage media, and systems for applying a user defined operation on collected network data include defining a user defined operation (UDO). A network device is monitored for data relating to the UDO and data relating to the UDO is collecte...	09/20/2011
8015314	Method for configuring a network element having an unknown protocol address A method and system of simplified configuration of a network element. A network element having a direct access module and an arbitrary unknown address is coupled to a same physical subnet as a management node. The management node broadcasts a discovery broadcast to ...	09/06/2011
8010668	Selective compression for network connections A system, apparatus, and method selectively provides content compression to a client based, in part, on whether the network connection from the client is determined to be a high latency, low-bandwidth connection. The present invention gathers one or more network met...	08/30/2011
8005953	Aggregated opportunistic lock and aggregated implicit lock management for locking aggregated files in a switched file system A switched file system, also termed a file switch, is logically positioned between client computers and file servers in a computer network. The file switch distributes user files among multiple file servers using aggregated file, transaction and directory mechanisms...	08/23/2011
8004971	Method and system for scaling network traffic managers using connection keys A method and system is directed to distributing a flow of packets over a network to multiple traffic management devices. An apparatus receives each packet from a network and may act as a layer 2 switch, or router, to distribute the packet to one of a group of traffi...	08/23/2011
7996886	Method and system for providing persistence in a secure network access A system and method for providing persistence in a secure network access by using a client certificate sent by a client device to maintain the identity of a target. A security handshake is performed with a client device to establish a secure session. A target is det...	08/09/2011
7975025	Smart prefetching of data over a network A method, system, an apparatus are directed towards selectively prefetching content over a network. A request for a content object is received. The content object may comprise a link to another content object. A cachability measure for the link may be determined bas...	07/05/2011
7958347	Methods and apparatus for implementing authentication A proxy (e.g., a switch) resides in a respective network environment between one or more clients and multiple servers. One purpose of the proxy is to provide the clients a unified view of a distributed file system having respective data stored amongst multiple remot...	06/07/2011
7958222	Method and system for accessing network services A system for accessing network services includes a plurality of resolvers including a root resolver and a secondary resolver, each resolver arranged to perform actions comprising determining a set of service locations based at least in part on the service and an add...	06/07/2011
7953838	TCP-over-TCP using multiple TCP streams A system, apparatus, and method for managing TCP over TCP communications using multiple TCP network connections. A plurality of tunneled network connections may be established between network devices. The network devices may employ one of the tunneled network connec...	05/31/2011
7945678	Link load balancer that controls a path for a client to connect to a resource A system, apparatus, and method are directed to managing network communications between a client and a server by enabling the client to make decisions involving the selection of alternate network paths. The client and/or the server may be multi-homed to a network. I...	05/17/2011
7921282	Using SYN-ACK cookies within a TCP/IP protocol A method, apparatus, and system are directed toward managing a Transmission Control Protocol/Internet Protocol (TCP/IP) handshake. A SYN-ACK cookie is determined based on a cryptographic operation using a secret key and at least one network characteristic. The SYN-A...	04/05/2011
7916730	Methods and system for solving cross-chip-trunk continuous destination lookup failure A method and system for preventing excessive flood packets from switching devices in a network for routing packets between a source station having an address and a destination station in the network having an address. A first packet directed toward the destination s...	03/29/2011
7916728	Lockless atomic table update Upon detecting a data event initiating an update to a table, a first classifier index associated with the data event is identified. From a classifier table, the current position in a first dimension of the table associated with the classifier index is determined. An...	03/29/2011
7885970	Scalable system for partitioning and accessing metadata over multiple servers In an aggregated file system, metadata is partitioned into multiple metadata volumes. On receipt of a file processing request, a file switch examines its mount entry cache to identify a target metadata volume that hosts the metadata of the requested file. The identi...	02/08/2011
7882084	Compression of data transmitted over a network A system, method, and apparatus are directed towards identifying adaptive length segments of redundant data for encoding a data structure. Initial boundaries are identified for an input matching segment within input data and for a candidate store matching segment in...	02/01/2011
7877511	Method and apparatus for adaptive services networking Methods and apparatus provide an adaptive load balancer that presents a virtual data system to client computer systems. The virtual data system provides access to an aggregated set of data, such as files or web service objects, available from a plurality of server d...	01/25/2011
7873065	Selectively enabling network packet concatenation based on metrics A method, system, and apparatus are directed towards selectively concatenating data into a packet to modify a number of packets transmitted over a network based on a combination of network and/or send-queue metrics. In one embodiment, Nagle's algorithm is used for c...	01/18/2011
7831712	System and method for performing application level persistence A method and apparatus for inserting and examining Cookies in the data streams of HTTP connections for the purpose of persistently directing HTTP connections to the same destination. A network device directs subsequent HTTP connections from the same client to the sa...	11/09/2010
7822839	Method and system for accessing network services A method and system for accessing network services. A client sends a request for a service. The request includes an address of the client. One or more resolvers receive the request for a service. The one or more resolvers determine at least one service location to r...	10/26/2010
7788335	Aggregated opportunistic lock and aggregated implicit lock management for locking aggregated files in a switched file system A switched file system, also termed a file switch, is logically positioned between client computers and file servers in a computer network. The file switch distributes user files among multiple file servers using aggregated file, transaction and directory mechanisms...	08/31/2010
7783781	Adaptive compression A method, system, and apparatus are directed towards compression of content over a network. The content may include content length information, such as within a header. In one embodiment, a portion of the content may be compressed to approximately fill a buffer of a...	08/24/2010
7774835	Method and system for extracting application protocol characteristics A method and computer program for automatically and continually extracting application protocols (i.e., defining a set of allowable or authorized actions) for any application. The method involves receiving a message from a server before it is sent or in parallel wit...	08/10/2010
7774484	Method and system for managing network traffic A system and method for directing network connections. The invention enables a network device to direct subsequent connections from a client to a server for accessing resources. A process extracts a persistence key from a received message, and employs the persistenc...	08/10/2010

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Assignee: F5 Networks, Inc.