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OSPF Configuration Overview Part 2

This is a follow-up article to part 1 of the OSPF configuration overview. In here we will go over some of the verification commands that will help us with troubleshooting issues that may arise. At this point in time we have covered the majority of the basic OSPF configuration and I will now move to the informational commands. The first useful command is the “show ip protocols” which tells us what routing protocols are currently...

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OSPF Configuration Overview Part 1

In this article I will write about the OSPF routing protocol and give a quick overview of the inner workings. OSPF is a link state routing protocol as opposed to a distance vector protocol like RIP. You might be wondering what type of a protocol EIGRP falls under? EIGRP is categorized as an advanced distance vector protocol as it uses the DUAL algorithm rather than the Bellman Ford algorithm used by RIP. OSPF is based on Dijkstra’s...

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EIGRP Configuration Overview Part 2

This is a continuation to part 1 of the EIGRP Configuration overview. In this article I will go over some advanced EIGRP configuration options. One of the first things that we want to do after configuring EIGRP is to limit to which interfaces we create neighbor relationships on. On interfaces where only end-user stations will be plugged into we can set the interface mode to passive. Making the interface mode passive means that we...

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