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What is Open Shortest Path First also known as?

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What is Open Shortest Path First also known as?

Open Shortest Path First (OSPF) is classified as an Interior Gateway Protocol (IGP). This means that it distributes routing information between routers belonging to a single autonomous system (AS), a group of routers all using a common routing protocol.

How does Open Shortest Path First Work?

Open Shortest Path First (OSPF) is a link-state routing protocol that was developed for IP networks and is based on the Shortest Path First (SPF) algorithm. Based on the link-state database, each router or system calculates a shortest-path spanning tree, with itself as the root, using the SPF algorithm.

What are the benefits of Open Shortest Path First OSPF protocol?

OSPF supports/provides/advantages –

  • Both IPv4 and IPv6 routed protocols.
  • Load balancing with equal-cost routes for the same destination.
  • VLSM and route summarization.
  • Unlimited hop counts.
  • Trigger updates for fast convergence.
  • A loop-free topology using SPF algorithm.
  • Run-on most routers.
  • Classless protocol.

What is difference between RIP and OSPF?

The principal difference is that RIP falls in the category of distance vector routing protocol whereas OSPF is the example of link state routing. Another difference is that RIP uses bellman ford algorithm while OSPF uses Dijkstra algorithm. RIP and EIGRP are the examples of the Distance vector routing protocols.

Which of the following shortest path algorithm is used by the Open Shortest Path First protocol?

OSPF
Explanation: Shortest path in OSPF is usually computed by Dijkstra’s algorithm.

How does OSPF find shortest path?

OSPF routers rely on cost to compute the shortest path through the network between themselves and a remote router or network destination. The shortest path computation is done using Djikstra’s algorithm. This algorithm isn’t unique to OSPF.

What are the main differences between Open Shortest Path First OSPF and Routing Information Protocol RIP gateway routing protocols?

OSPF routing protocol has complete knowledge of network topology, allowing routers to calculate routes based on incoming requests. OSPF protocol has no limitations in hop count, unlike RIP protocol that has only 15 hops at most. So OSPF converges faster than RIP and has better load balancing.

What is the ad value of OSPF?

By default, OSPF has a default administrative distance of 110 and RIP has a default administrative distance of 120. Administrative distance values can, however, usually be adjusted manually by a network administrator.

What are the important features of Open Shortest Path First protocol?

The protocol recalculates routes when network topology changes, using the Dijkstra algorithm, and minimises the routing protocol traffic that it generates. It provides support for multiple paths of equal cost.

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