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・ Convergence (ABC convention)
・ Convergence (book series)
・ Convergence (comics)
・ Convergence (Dave Douglas album)
・ Convergence (David Arkenstone and David Lanz album)
・ Convergence (economics)
・ Convergence (evolutionary computing)
・ Convergence (Front Line Assembly album)
・ Convergence (goth festival)
・ Convergence (journal)
・ Convergence (logic)
・ Convergence (New Jersey)
・ Convergence (novel)
・ Convergence (Pollock)
・ Convergence (relationship)
Convergence (routing)
・ Convergence (SSL)
・ Convergence (sustainability science)
・ Convergence (TV series)
・ Convergence and Union
・ Convergence center
・ Convergence clubs
・ Convergence Démocratique
・ Convergence Festival
・ Convergence for Alternation and Change
・ Convergence for Development
・ Convergence for Friuli
・ Convergence for Renewal and Citizenship
・ Convergence for Social Democracy (Burkina Faso)
・ Convergence for Social Democracy (Equatorial Guinea)


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Convergence (routing) : ウィキペディア英語版
Convergence (routing)

Convergence is the state of a set of routers that have the same topological information about the internetwork in which they operate. For a set of routers to have ''converged'', they must have collected all available topology information from each other via the implemented routing protocol, the information they gathered must not contradict any other router's topology information in the set, and it must reflect the real state of the network. In other words: In a converged network all routers "agree" on what the network topology looks like.〔(【引用サイトリンク】 publisher = ''CNET Networks, Inc.'' )
Convergence is an important notion for a set of routers that engage in dynamic routing. All Interior Gateway Protocols rely on convergence to function properly. To have converged it is the normal state of an operational autonomous system. The Exterior Gateway Routing Protocol BGP typically never converges because the Internet is too big for changes to be communicated fast enough.
== Convergence process ==

When a routing protocol process is enabled, every participating router will attempt to exchange information about the topology of the network. The extent of this information exchange, the way it is sent and received, and the type of information required vary widely depending on the routing protocol in use, see e.g. RIP, OSPF, BGP4.
A state of convergence is achieved once all routing protocol-specific information has been distributed to all routers participating in the routing protocol process. Any change in the network that affects routing tables will break the convergence temporarily until this change has been successfully communicated to all other routers.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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