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Standards >
Network Protocols >
Routing Protocols >
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ALSO CALLED:
Open Shortest Path First Protocol
DEFINITION: OSPF (Open Shortest Path First) is a router protocol used within larger autonomous system networks in preference to the Routing Information Protocol (RIP), an older routing protocol that is installed in many of today's corporate networks. Like RIP, OSPF is designated by the Internet Engineering Task Force (IETF) as one of several Interior Gateway Protocols (IGPs). Using OSPF, a host that obtains
Definition continues below.
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OSPF Protocol Reports
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2 Matches
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OSPF Synchronization
sponsored by Global Knowledge
WHITE PAPER:
With IP there are two Link-State protocols in use OSPF (Open Shortest Path First) and IS-IS (Intermediate System to Intermediate System). Both work in much the same way, but OSPF is more commonly used. This white paper examines OSPF synchronization.
Posted: 22 Nov 2010 | Published: 22 Nov 2010
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OSPF Scaling and Summarization
sponsored by Global Knowledge
WHITE PAPER:
This paper examines the usefulness and goal of summarization. These goals consist of conserving RAM, bandwidth and CPU by hiding information from some of the routers.
Posted: 22 Nov 2010 | Published: 22 Nov 2010
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OSPF PROTOCOL DEFINITION (continued):
a change to a routing table or detects a change in the network immediately multicasts the information to all other hosts in the network so that all will have the same routing table information. Unlike the RIP in which the entire routing table is sent, the host using OSPF sends only the part that has changed. With RIP, the routing table is sent to a neighbor host every 30 seconds. OSPF multicasts the updated information only when a change has taken place. Rather than simply counting the number of hops, OSPF bases its path descriptions on "link states" that take into account additional network
OSPF Protocol definition sponsored by SearchEnterpriseWAN.com, powered by WhatIs.com an online computer dictionary
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