Configuring OSPF with SDM

configuring ospf with sdm

With all these configurations we have learned in our previous article for OSPF we have encountered so far (which are only the tip of the iceberg), it is a relief to have some of these configurations simplified by the web-based SDM GUI. To begin, we should take similar steps as we did with the CLI … Read more

Introduction to configuring OSPF – CCNA Course

introduction to configuring ospf

One of the first steps you should take when configuring OSPF is to configure loopback interfaces to ensure that your Router ID matches the IP address of the loopback interface when the OSPF routing process is started. To create a virtual loopback interface, you configure it like a normal interface: The interface number for the … Read more

Open Shortest Path First (OSPF) – CCNA Course

open shortest path first ccna course

The most widely used link-state routing protocols today is an IETF standard routing protocol called Open Short Path First. Developed in 1988, this routing protocol was created to overcome the limitations that RIP presented for large-scale networks. This article looks at the fundamentals of OSPF and shows you how to apply them in your configuration. … Read more

Link State and Hybrid Routing Protocols

Link state and hybrid routing protocol

Distance vector routing protocols are ideal for small networks that have routers with slow processing power and limited memory resources. Today’s enterprises require significantly larger networks that can scale way beyond the limits of distance vector routing protocols. As networks grow larger, routing protocols must also be able to react to topology changes faster to … Read more

Configuring RIP with SDM – CCNA Course

conifiguring RIP with sdm

RIP configuration using SDM are relatively similar and just as easy as configuring default and static routes. Select configuration, routing. Focus on the bottom of the screen for our dynamic routing protocols. When you click the edit button you can specify your routing protocol parameters. You can enable RIP by checking the checkbox and specifying … Read more

Distance vector routing protocols

distance vector routing protocol

The preceding chapter looked at distance vector routing protocols from a sort of high altitude overview. This article brings you closer so that you can see the specific protocols that belong to this routing protocol class and explore the unique characteristics and functionality they provide. You will also learn how to configure those routing protocols … Read more

Route summarization in Cisco Networking

route summerization in cisco networking

As already mentioned, classful routing protocols automatically summarized networks to the classful subnet boundaries. Classless routing protocols, on the other hand, require you to manually control the networks being summarized to your neighbors in the router configuration. By aggregating a contiguous set of networks into an advertised summarized route, you keep the size of the … Read more

Arrays in C Programming Language


An array is a sequence of data in memory, wherein all data are of the same type and are placed in physically adjacent locations. Thus array is a collective name given to the group of similar types and quantities. Array declarations: Syntax e.g. Accessing array elements once an array is declared, we refer the individual … Read more

Control structures in C

basic c programs for beginners

The control structures determine the order in which the various instructions in a C program are to be executed. In other words, they determine the flow of control in a C program. The different control structures are as follows: Sequential control structure Conditional branching structure Unconditional branching structure Loop structure Sequential control structure This type … Read more

Dynamic Routing Protocols – CCNA Course

Dynamic routing protocols

When complex networks contain multiple interconnections, static routes are no longer a practical solution because they cannot adapt or react to changes in the topology. Not to mention, the configuration complexity can grow exponentially as you add more devices to the network. For example, give the network design shown in the figure below, router A … Read more