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Aggregate Server Access Protocol
As a communications protocol the Aggregate Server Access Protocol is used by the Reliable server pooling (RSerPool) framework for the communication between * Pool Elements and Pool Registrars (Application Layer) * Pool Users and Pool Registrars (Application Layer) * Pool Users and Pool Elements (Session Layer In the seven-layer OSI model of computer networking, the session layer is layer 5. The session layer provides the mechanism for opening, closing and managing a session between end-user application processes, i.e., a semi-permanent dialogue. ...) Standards Documents Aggregate Server Access Protocol (ASAP)Aggregate Server Access Protocol (ASAP) and Endpoint Handlespace Redundancy Protocol (ENRP) ParametersThreats Introduced by Reliable Server Pooling (RSerPool) and Requirements for Security in Response to ThreatsReliable Server Pooling Policies External links Thomas Dreibholz's Reliable Server Pooling (RSerPool) Page Internet protocols Internet Standards Session ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communication Protocol
A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics (computer science), semantics and synchronization of communication and possible Error detection and correction, error recovery methods. Protocols may be implemented by Computer hardware, hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages. Each message has an exact meaning intended to elicit a response from a range of possible responses pre-determined for that particular situation. The specified behavior is typically independent of how it is to be Implementation, implemented. Communication protocols have to be agreed upon by the parties involved. To reach an agreement, a protocol may be developed into a technical standard. A programming language describes the same for computations, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reliable Server Pooling
Reliable Server Pooling (RSerPool) is a computer protocol framework for management of and access to multiple, coordinated (pooled) servers. RSerPool is an IETF standard, which has been developed by the IETF RSerPool Working Group and documented in RFC 5351, RFC 5352, RFC 5353, RFC 5354, RFC 5355 and RFC 5356. Introduction In the terminology of RSerPool a server is denoted as a Pool Element (PE). In its Pool, it is identified by its Pool Element Identifier (PE ID), a 32-bit number. The PE ID is randomly chosen upon a PE's registration to its pool. The set of all pools is denoted as the Handlespace. In older literature, it may be denoted as Namespace. This denomination has been dropped in order to avoid confusion with the Domain Name System (DNS). Each pool in a handlespace is identified by a unique Pool Handle (PH), which is represented by an arbitrary byte vector. Usually, this is an ASCII or Unicode name of the pool, e.g. "DownloadPool" or "WebServerPool". Each handlespace ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RSerPool
Reliable Server Pooling (RSerPool) is a computer protocol framework for management of and access to multiple, coordinated (pooled) servers. RSerPool is an IETF standard, which has been developed by the IETF RSerPool Working Group and documented in RFC 5351, RFC 5352, RFC 5353, RFC 5354, RFC 5355 and RFC 5356. Introduction In the terminology of RSerPool a server is denoted as a Pool Element (PE). In its Pool, it is identified by its Pool Element Identifier (PE ID), a 32-bit number. The PE ID is randomly chosen upon a PE's registration to its pool. The set of all pools is denoted as the Handlespace. In older literature, it may be denoted as Namespace. This denomination has been dropped in order to avoid confusion with the Domain Name System (DNS). Each pool in a handlespace is identified by a unique Pool Handle (PH), which is represented by an arbitrary byte vector. Usually, this is an ASCII or Unicode name of the pool, e.g. "DownloadPool" or "WebServerPool". Each handlespace ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pool Element
Pool may refer to: Water pool * Swimming pool, usually an artificial structure containing a large body of water intended for swimming * Reflecting pool, a shallow pool designed to reflect a structure and its surroundings * Tide pool, a rocky pool on an ocean shore that remains filled with seawater when the tide goes out * Salt pannes and pools, a water-retaining depression located within salt and brackish marshes * Plunge pool, a small, deep body of water * Stream pool, a quiet slow-moving portion of a stream * Spent fuel pool, a storage facility for used fuel rods from a nuclear reactor Sports and gambling * Pool (cards), the common pot for stakes or the stakes themselves in card games * Pool (dominoes), the stock or boneyard in dominoes * Pool (cue sports), a group of games played on a pool table * Pool (poker) or pot (poker), money wagered during a single hand of poker * Pool betting or parimutuel betting, a betting system in which all bets of a particular type are placed to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pool Registrar
In computing, a Pool Registrar (PR) is a component of the reliable server pooling (RSerPool) framework which manages a handlespace. PRs are also denoted as ENRP server or Name Server (NS). The responsibilities of a PR are the following: * Register Pool Elements into a handlespace, * Deregister Pool Elements from a handlespace, * Monitor Pool Elements by keep-alive messages, * Provide handle resolution (i.e. server selection) to Pool User A Pool User (PU) is a client in the Reliable Server Pooling (RSerPool) framework. In order to use the service provided by a pool, a PU has to proceed the following steps: * Ask a Pool Registrar for server selection (the Pool Registrar will return ...s, * Audit the consistency of a handlespace between multiple PRs, * Synchronize a handlespace with another PR. Standards Documents Aggregate Server Access Protocol (ASAP)Endpoint Handlespace Redundancy Protocol (ENRP)Aggregate Server Access Protocol (ASAP) and Endpoint Handlespace Redundancy Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Application Layer
An application layer is an abstraction layer that specifies the shared communications protocols and Interface (computing), interface methods used by Host (network), hosts in a communications network. An ''application layer'' abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model. Although both models use the same term for their respective highest-level layer, the detailed definitions and purposes are different. Internet protocol suite In the Internet protocol suite, the application layer contains the communications protocols and interface methods used in process-to-process communications across an Internet Protocol (IP) computer network. The application layer only standardizes communication and depends upon the underlying transport layer protocols to establish host-to-host data transfer channels and manage the data exchange in a client–server model, client–server or peer-to-peer networking model. Though the TCP/IP application layer does not d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pool User
A Pool User (PU) is a client in the Reliable Server Pooling (RSerPool) framework. In order to use the service provided by a pool, a PU has to proceed the following steps: * Ask a Pool Registrar for server selection (the Pool Registrar will return a list of servers, called Pool Elements), * Select one Pool Element, establish a connection and use the actual service, * Repeat the server selection and connection establishment procedure in case of server failures, * Perform an application-specific session failover to a new server to resume an interrupted session, * Report failed servers to the Pool Registrar In computing, a Pool Registrar (PR) is a component of the reliable server pooling (RSerPool) framework which manages a handlespace. PRs are also denoted as ENRP server or Name Server (NS). The responsibilities of a PR are the following: * Register .... Standards Documents Aggregate Server Access Protocol (ASAP)Endpoint Handlespace Redundancy Protocol (ENRP)Aggregate Server Acces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Session Layer
In the seven-layer OSI model of computer networking, the session layer is layer 5. The session layer provides the mechanism for opening, closing and managing a session between end-user application processes, i.e., a semi-permanent dialogue. Communication sessions consist of requests and responses that occur between applications. Session-layer services are commonly used in application environments that make use of remote procedure calls (RPCs). An example of a session-layer protocol is the OSI protocol suite session-layer protocol, also known as X.225 or ISO 8327. In case of a connection loss this protocol may try to recover the connection. If a connection is not used for a long period, the session-layer protocol may close it and re-open it. It provides for either full duplex or half-duplex operation and provides synchronization points in the stream of exchanged messages. Other examples of session layer implementations include Zone Information Protocol (ZIP) – the AppleTa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Protocols
The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suite are the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), and the Internet Protocol (IP). In the development of this networking model, early versions of it were known as the Department of Defense (DoD) model because the research and development were funded by the United States Department of Defense through DARPA. The Internet protocol suite provides end-to-end data communication specifying how data should be packetized, addressed, transmitted, routed, and received. This functionality is organized into four abstraction layers, which classify all related protocols according to each protocol's scope of networking. An implementation of the layers for a particular application forms a protocol stack. From lowest to high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Standards
In computer network engineering, an Internet Standard is a normative specification of a technology or methodology applicable to the Internet. Internet Standards are created and published by the Internet Engineering Task Force (IETF). They allow interoperation of hardware and software from different sources which allows internets to function. As the Internet became global, Internet Standards became the lingua franca of worldwide communications. Engineering contributions to the IETF start as an Internet Draft, may be promoted to a Request for Comments, and may eventually become an Internet Standard. An Internet Standard is characterized by technical maturity and usefulness. The IETF also defines a Proposed Standard as a less mature but stable and well-reviewed specification. A Draft Standard was an intermediate level, discontinued in 2011. A Draft Standard was an intermediary step that occurred after a Proposed Standard but prior to an Internet Standard. As put in RFC 2026: In ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
