What are the advantages and disadvantages of OSPF?

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What are the advantages and disadvantages of OSPF?

no limitation on the hop count.

  • intelligent use of Variable Length Subnet Masks (VLSM) is very useful in IP address allocation.
  • IP multicasting to send link-state updates.
  • better convergence than RIP.
  • allowing better load balancing.
  • allowing a logical definition of networks where routers can be divided into areas.

    • What is the advantage of OSPF protocol?

    The main advantage of a link state routing protocol like OSPF is that the complete knowledge of topology allows routers to calculate routes that satisfy particular criteria. This can be useful for traffic engineering purposes, where routes can be constrained to meet particular quality of service requirements.

    Why OSPF is classless?

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    Classless routing – It refers to a type of routing where the router uses the default route to forward traffic if no other specific routes are found. It includes subnet mask information in the routing update and is supported by RIPv2, OSPF, and EIGRP protocols.

    What are the disadvantages of dynamic routing?

    Disadvantages of Dynamic Routing

    • Resources. Dynamic routing requires more resources such as CPU, RAM and Bandwidth.
    • Communication. Some machines in the network may have problems in communicating with dynamic routing protocol.
    • Complexity.
    • Security.
    • Bandwidth Shortages.
    • Cost.
    • Administration Control.

    Why OSPF is preferred over BGP?

    Scale: BGP is more flexible and scalable than OSPF and it is also used on a larger network. Preferred path: OSPF is used to determine the fastest route while BGP puts emphasis on determining the best path. Protocol: In OSPF, internet protocol is used. While in BGP, transmission control protocol is used.

    What layer is OSPF?

    Application Layer
    OSPF and BGP belong to the Application Layer.

    Is OSPF unicast or multicast?

    Update destination address: OSPF uses multicast and unicast, rather than broadcast, for sending messages. The IPv4 multicast addresses used for OSPF are 224.0. 0.5 to send information to all OSPF routers and 224.0.

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    What are the advantages and disadvantages of routing protocols?

    Table 3-2 Static Routing Advantages and Disadvantages

    Advantages Disadvantages
    Very secure. No advertisements are sent, unlike with dynamic routing protocols. Configuration complexity increases dramatically as the network grows. Managing the static configurations in large networks can become time consuming.

    What is OSPF in networking?

    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. In an OSPF network, routers or systems within the same area maintain an identical link-state database that describes the topology of the area.

    What is OSPF and how does it work?

    Djikstra states that OSPF’s metric is cost on Cisco routers; cost is based on bandwidth the default value is 10 to the 8 th power divided by interface bandwidth. OSPF adds the cost of each link along the path to the destination network. The SPF algorithm uses this metric to build a tree containing the shortest or “least cost” path to each network.

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    What are the new features of OpenOSPF?

    OSPF was mentioned having many new features, but noted are: Scalability – OSPF is specifically designed to operate with larger networks. Full subnetting support – OSPF can fully support subnetting. Hello packets – OSPF uses small hello packets to verify link operation with out transferring large tables.

    What is backbone area in OSPF?

    An autonomous system can be divided into areas; these help in reducing the link state advertisements and other overhead traffic that will be otherwise sent to the network. Backbone Area: It is also known as area0 or area 0.0.0.0; it forms the very core of an OSPF network, and all other areas of the network are connected to the backbone area.

    What is open shortest path first (OSPF)?

    Introduction to OSPF Open Shortest Path First (OSPF) is one of the Interior Gateway Protocol (IGP), which helps to find the best routing path between the source and the destination router using its own shortest path first (SPF) algorithm.