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Routing Protocols and Concepts Chapter 3 Introduction to Dynamic Routing Protocols


To alter to a certain size according to need.


Well-defined rule or process for arriving at a solution to a problem. In networking, they are commonly used to determine the best route for traffic from a particular source to a particular destination.

autonomous system(AS)

A collection of networks under a common administration sharing a common routing strategy. They are subdivided by areas. They must be assigned a unique 16-bit number by the IANA

routing domain

Another name for an autonomous system.

interior gateway protocols

Internet protocol used to exchange routing information within an autonomous system.

exterior gateway protocols

Routing protocols used to route between autonomous systems.

path vector protocol

A routing protocol that marks and shows the path that update information takes as it diffuses through the network.

distance vector

A routing algorithm that uses the number of hops to find shortest-path.


A quantity characterized by a magnitude and a direction.


Refers to the status of a link, including the interface IP address/subnet mask, type of network, cost of the link, and any neighbor routers on that link.

link-state router

A router that uses a link-state routing protocol.


When all intermediate devices have the same consistent network topology in their routing tables.

classful routing protocols

Routing protocols that use ______ IP addressing. They do not use subnet mask information in their routing operation.


Capability to specify a different subnet mask for the same network number on different subnets.


Components that are fragmented.

classless routing protocols

Routing protocols that include the subnet mask in their routing operation.


Speed and ability of a group of inter-networking devices running a specific routing protocol to agree on the topology of an inter-network after a change in that topology.

administrative distance

Rating of the trustworthiness of a routing information source. is is often expressed as a numerical value between 0 and 255; the higher the value, the lower the trustworthiness rating.

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