Now that we have a basic understanding of IP addresses, DHCP and ACLs. NAT would our next tool that will have a critical role with internet access and port forwarding…
VLAN Trunking Protocol (VTP): is a Cisco proprietary protocol that propagates the definition of Virtual Local Area Networks (VLANs) to the neighboring L2 devices. To do this, VTP carries VLAN information…
Cisco Discovery Protocol (CDP): Cisco Discovery Protocol is a proprietary Data Link Layer protocol developed by Cisco Systems. It is used to share information about other directly connected Cisco equipment,…
Cisco devices have two main shell modes, the user EXEC mode and the Privileage EXEC mode The user EXEC mode offers a very limited set of commands like ping, telnet,…
Every IP address is divided into a network portion and a host portion. The size of the network/host portions is defined by the subnet mask. Subnet Masks can only have…
The OSI model is a common model that is utilized to refer to the components with a networks and conceptualize them The model divides the network into 7 layers starting…
Every network starts with a switch, that connects a couple of devices and eventually a device that is being used as a default gateway that would enable external reachability. One…