5.2.1 - Dynamic Routing Protocols Flashcards

Flashcards covering key concepts related to dynamic routing protocols.

What is a dynamic routing protocol?

A routing protocol that uses an algorithm and metrics to build and maintain a routing information base.

What does a routing information base store?

Information about the networks to which the router is connected.

What is a learned route?

Communicated to a router by another router.

What are the two main categories of algorithms used for path selection?

Distance vector and link state.

Why is a metric calculated?

To determine which path will be selected for use in the IP routing table.

What metric do distance vector protocols use?

The number of hops to the destination.

What is convergence?

The process whereby routers running dynamic routing algorithms agree on the network topology.

What is a sinkhole?

A packet is discarded without notification back to the source.

What is a loop in networking?

A packet is forwarded around the network until its TTL expires.

What is meant by steady state in a network?

All the routers share the same topology.

What is a flapping interface?

One that frequently changes from online to offline and offline to online.

What is route flapping?

Changing the properties of a route it is advertising quickly and often.

What is an autonomous system (AS)?

A network under the administrative control of a single owner.

What is an Interior Gateway Protocol (IGP)?

One that identifies routes within an AS.

What is an Exterior Gateway Protocol (EGP)?

One that can advertise routes between autonomous systems.