IS-IS was developed at roughly the same time that the Internet Engineering Task Force IETF was developing a similar protocol called OSPF.

OSPF, on the other hand, was designed for IPv4.

To operate with IPv6 networks, the OSPF protocol was rewritten in OSPF v3 ( as specificed in RFC 2740 ).

OSPF uses path cost as its basic routing metric, which was defined by the standard not to equate to any standard value such as speed, so the network designer could pick a metric important to the design.

The technique was later adapted for use in the contemporary link-state routing protocols IS-IS and OSPF.

Given the same set of resources, IS-IS can support more routers in an area than OSPF.

To many, it is not clear whether a whole new protocol is needed, or whether OSPF could be extended with support for wireless interfaces.

Zebra is a routing software package that provides TCP / IP based routing services with routing protocols support such as RIP, OSPF and BGP.

Protocols that support some form of adjacency setup, such as OSPF or IS-IS, may also be used to bootstrap a BFD session.

They present a means of detecting false packets, at least to the subnet, by essentially making use of existing OSPF routing state to have routers make intelligent decisions about whether or not a packet should be routed.

Examples of adaptive-routing algorithms are the Routing Information Protocol ( RIP ) and the Open-Shortest-Path-First protocol ( OSPF ).

Routing functions such as OSPF or BGP run at the process level.

Other routing protocols such as Open Shortest Path First ( OSPF ) and Enhanced Interior Gateway Routing Protocol ( EIGRP ) only send updates when a connection changes.

* OSPF ( Open Shortest Path First Routing )

OSPF uses multicast addressing for route flooding on a broadcast network link.

PNNI uses the same shortest-path-first algorithm used by OSPF and IS-IS to route IP packets to share topology information between switches and select a route through a network.

Dijkstra's algorithm is used in SPF, Shortest Path First, which is used in the routing protocols OSPF and IS-IS.

MPLS Traffic Engineering relies upon the use of TE extensions to Open Shortest Path First ( OSPF ) or Intermediate System To Intermediate System ( IS-IS ) and RSVP.

Interior routing mostly uses link-state routing protocols such as OSPF and IS-IS.

An example would be the joining of a number of large OSPF ( Open Shortest Path First ) networks where OSPF by itself would not scale to size.

Like the OSPF protocol, IS-IS uses Dijkstra's algorithm for computing the best path through the network.

Both IS-IS and OSPF are link state protocols, and both use the same Dijkstra algorithm for computing the best path through the network.

IS-IS differs from OSPF in the way that " areas " are defined and routed between.

In OSPF, areas are delineated on the interface such that an area border router ( ABR ) is actually in two or more areas at once, effectively creating the borders between areas inside the ABR, whereas in IS-IS area borders are in between routers, designated as Level 2 or Level 1-2.

The logical view is that OSPF creates something of a spider web or star topology of many areas all attached directly to Area Zero and IS-IS by contrast creates a logical topology of a backbone of Level 2 routers with branches of Level 1-2 and Level 1 routers forming the individual areas.

IS-IS also differs from OSPF in the methods by which it reliably floods topology and topology change information through the network.

OSPF has a larger set of extensions and optional features.

OSPF uses the Dijkstra algorithm.

Open Shortest Path First ( OSPF ) is an adaptive routing protocol for Internet Protocol ( IP ) networks.

It is defined as OSPF Version 2 in RFC 2328 ( 1998 ) for IPv4.

OSPF is perhaps the most widely used interior gateway protocol ( IGP ) in large enterprise networks.

OSPF detects changes in the topology, such as link failures, very quickly and converges on a new loop-free routing structure within seconds.

Identical copies of the LSDB are periodically updated through flooding on all OSPF routers.

The OSPF routing policies to construct a route table are governed by link cost factors ( external metrics ) associated with each routing interface.

An OSPF network may be structured, or subdivided, into routing areas to simplify administration and optimize traffic and resource utilization.

He bounced exuberantly on the sagging bed and was even more delighted when Madame Lalaurie -- after closing the door -- showed the slave that the bed was designed for something other than slumber.

She designed and supervised the building of the Harbert, Michigan, house, most of which was constructed by one local carpenter who carried the heavy beams singly upon his shoulder.

My other nugget of art and architectural knowledge -- besides remembering that it was Ghiberti who designed the doors of the baptistery in Florence -- is the three styles of Greek columns.

She was forty-nine at this time, a lanky woman of breeding with an austere, narrow face which had the distinction of a steeple or some architecture that had been designed long ago for a stubborn sort of prayer.

For example, the importance of the Regulus 2, a very promising aerodynamic ship-to-surface missile designed to be launched by surfaced submarines, was greatly diminished by the successful acceleration of the much more advanced Polaris ballistic missile launched by submerged submarines.

Another example is the recent cancellation of the F-108, a long-range interceptor with a speed three times as great as the speed of sound, which was designed for use against manned bombers in the period of the mid-1960's.

As America on wheels was responsible for an industry of motor courts, motels, and drive-in establishments where you can dine, see a movie, shop, or make a bank deposit, the ever-increasing number of boating enthusiasts have sparked industries designed especially to accommodate them.

Completed and opened for traffic in 1852, the bridge was designed and built by Lemuel Chenoweth and his brother, Eli, of Beverly.

Called a `` Slo-Flo '' meter it was designed for this job by Power Plus Industries of Los Angeles, a key individual being Don Nelson.

The anode holder shown in figure 2 was designed with two goals in mind.

He found, as he had suspected, a general consensus that perhaps over half of the present functionally designed course was not really functional for these students.

Although the Taylor Scale was designed as a group testing device, in this study it was individually administered by psychologically trained workers who established rapport and assisted the children in reading the items.

The questionnaire was designed to elicit three types of information: ( 1 ) the facts regarding certain characteristics of the respondents, including their experience with, and interest in, securing defense business ; ;

The layout of the sewer lines was designed by Henry W. Taylor, who was the engineer for the Manchester Village disposal plant.

The pilot lagoon was designed to handle the wastes from 314 persons with a 4-day aeration period.

If it was designed to put me on the spot, it would have to have been written before Peralta ever called me in on the case ''.

It was of the hunter-killer type, designed to seek out ships and other submarines with its most advanced gear and destroy them with torpedoes.

The production, designed by Simon Virsaladze, was completely traditional but traditional in the right way.

Hendricks' story was designed for children and he had a small audience of small children right on stage with him.

In Korea, the Hangul alphabet was created by Sejong the Great Hangul is a unique alphabet: it is a featural alphabet, where many of the letters are designed from a sound's place of articulation ( P to look like the widened mouth, L to look like the tongue pulled in, etc.

The Declaration announced the states ' entry into the international system ; the model treaty was designed to establish amity and commerce with other states ; and the Articles of Confederation, which established “ a firm league ” among the thirteen free and independent states, constituted an international agreement to set up central institutions for the conduct of vital domestic and foreign affairs.

The game was conceived by Lyle Rains and programmed and designed by Dominic Walsh and Ed Logg.