Networks use different routing protocols to select the best routing path to reac

Question

Networks use different routing protocols to select the best routing path to reach other networks. A distance-vector routing uses a set of protocols (IPX, SPX, IP, or DECnet) and a distance calculation through an outgoing network interface to select the most efficient path to a network destination.

Link-state routing protocols track the connection status and type to each link that comes from a network. The criteria for selection are links with greater hops and faster mediums. Those are considered the most efficient links that will be used by the routing protocols.

Discuss the following for this assignment:

Do you think that most network administrators understand and use both distance-vector and link-state protocols? Why?

In your opinion, are there other options that can perform the tasks of these protocols? What is the future for routing through these protocols? Explain.

Explanation / Answer

Answer for the Question Part 1:

Yes network administrators will understand the type and use of Linkstate routing and Distance vector routing based on few constraints.
These are listed below

Point 1)
Link-state routing protocols essentially know the entire network and all have the same view of the network.
Distance vector only knows it’s directly connected neighbours and the cost of networks as advertised by those.

Point 2)
Distance Vector routing protocols are less scalable such as RIP supports 16 hops and IGRP has a maximum of 100 hops.
Link State routing protocols are very much scalable supports infinite hops.

Point 3)
Distance Vector are classful routing protocols which means that there is no support of Variable Length Subnet Mask (VLSM) and Classless
Inter Domain Routing (CIDR).
Link State routing protocols are classless which means that they support VLSM and CIDR

Answer for the Question Part 2:

Yes these are other opinions also their in these protocols these are like

Link state routing requires that every node be extremely cooperative, usually under the same management. Distance vector is a bit more robust
(but is still vulnerable to bad information), and allows you to be more creative, doing things like route filtering.
Link state routing is internally much more complicated. Distance vector is brutally simple.
Link state has higher infrastructure requirements. More memory, more peak CPU load.

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