CCNA

OSPF uses four different types of routers with a unique role and set of defining characteristics within the hierarchy. The...

OSPF supports routing protocol authentication using MD5 Authentication. It is more secure than plain text authentication. It uses the MD5...

The role of routers in a network is so crucial that they are often the targets of network attacks. The...

Devices enable OSPF to constantly track the status of their neighbors, sending and receiving hello packets. Hello, packets show whether...

We have already discussed the Default route Propagation in “Propagate Default Route in RIP”. In this article, I am going...

Each broadcast and Non-Broadcast Multi-Access (NBMA) network has a designated router. This router is the central point for collecting and...

In the previous lesson, we discussed the challenges of the OSPF Multi-access network. The two challenges are unwanted adjacencies and...

OSPF defines five types of network. The types are point-to-point, Broadcast Multi-access, Non-broadcast Multi-access (NBMA), point-to-multi-point and virtual networks. The...

We have already discussed the frame control field format in the previous lesson that the Frame Control field contains multiple...