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CCNA 3 – LAN Switching and Wireless – VLANs
Introducing VLANs What are VLANs? Virtual Networks. VLANs separate broadcast domains without the need of an additional router. VLANs are used to create multiple networks without having to add a physical interface on the router. VLANs logically separate IP networks. Why do we use VLANs? Security – Groups that have sensitive data are separated from [...]
CCNA 3 – LAN Switching and Wireless – Basic Switch Concepts and Configuration
After understanding how to design a LAN, we’ll now be studying the basic concepts and configuration of a network switch. As a review, a switch basically connects multiple network segments. Switch forwards packets to destination hosts. There are 2 forwarding methods of a switch: Store and Forward (current models use this) – the switch receives [...]
CCNA 2 – Routing Protocols and Concepts – Intro to Routing and Packet Forwarding – A Day in the Life of a Packet
PC1 needs to send data to PC2 which is on another network. PC1 examines the data, encapsulated in a Layer 3 PDU. PC1 looks at the destination address and the subnet mask and performs the AND process to determine the destination network address. PC1 performs the same AND process to its own IP address and [...]
CCNA 2: Routing Protocol and Concepts: Intro to Routing and Packet Forwarding: The Routing Table
This is a continuation of “Inside the Router”. What is a routing table? You wouldn’t have a clue if you don’t know what a router is. As a review, routers forward data packets to their destination networks. Before they do, routers have to know where to send the data packets, where these destination networks are. How? They [...]
CCNA 2: Routing Protocol and Concepts – Intro to Routing and Packet Forwarding – Basic Router Configuration
Topics: Naming the router Setting passwords Configuring interfaces Configuring a banner Saving changes on a router Verifying basic configuration and router operations
CCNA 2 Routing Protocols and Concepts: Intro to Routing and Packet Forwarding: Inside the Router
Read and learn! Topics: The Router Its role on the network Its hardware & software components The bootup process Routing process
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