1 / 26

Essential Networking Hardware Explained

Explore the fundamental networking hardware components like repeaters, hubs, routers, and more. Learn how each device functions in the network ecosystem.

rian
Download Presentation

Essential Networking Hardware Explained

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lesson 5 – Understanding Network Hardware

  2. OVERVIEW • Repeaters • Hubs and concentrators • Bridges • Routers • Switches • Gateways • Firewalls • Short-haul modems

  3. REPEATER A repeater: • Extends the distance of a Network run. • Takes a weak Network signal in on one side, boosts the signal, and sends it out its other side. • Operates at the physical layer of the OSI Networking model.

  4. Repeater A repeater: • Is only used to connect the same type of media. • Can segment one of its connections from the other.

  5. Repeater Using repeaters to expand Network length

  6. HUBS AND CONCENTRATORS • Hubs and concentrators are used to connect Network nodes to Network backbones. • Nodes are connected to hubs in a physical star fashion, whether they are used for a star or ring topology Network.

  7. Hubs and concentrators Properties : • Hubs echo data from each port to other ports on the hub. • They are automatically positioned.

  8. Hubs and concentrators Features : • Built-in management. • Auto sensing of connection speeds. • High-speed up-links connecting the hub to a backbone. • Built-in bridging and routing functions .

  9. Bridges A typical hub arrangement

  10. BRIDGES • Built-in switching. • Bridges connect two Network segments. • They have the intelligence to pass traffic from one segment to another.

  11. Bridges • Bridges that can span different Networking systems and media are also available. • They operate at the data link layer of the OSI model. • They address information about all parts of your Network.

  12. ROUTERS • Routersoperate at the network layer of the OSI Model. • They are far more intelligent than bridges in sending incoming packets to their destination.

  13. Routers • Routers can translate from any of the protocols at layers 1-3 to any other protocols at layers 1-3. • They can connect similar and dissimilar networks.

  14. Routers • Routers become a node on a Network and have their own Network address. • They can determine and use the shortest route to a location. • They form the backbone of the Internet.

  15. Routers Programming routers: • Connect a terminal or PC to the RS-232C port and program the router in text mode. • Use the Network-based software to program the router.

  16. Routers Network using routers

  17. SWITCHES • Switches can rapidly switch connections from one port to another. • They are connection-oriented.

  18. Switches • They dynamically switch among ports to create connections. • All ports coming into a switch are not part of a single collision domain.

  19. Switches Network using hubs and switches

  20. GATEWAYS • Gateways are application-specific interfaces. • They link the 7 layers of the OSI Model when they are dissimilar at any or all levels. • They can translate from Ethernet to Token Ring.

  21. FIREWALLS • A firewall sits between two Networks and enforces Network security policies. • They generally sit between a company LAN and the Internet.

  22. Firewalls Types: • Network-based • Application-based

  23. SHORT-HAUL MODEMS Short-haul modems : • Provide point-to-point connectivity between a workstation and another device. • Enable you to connect two distant RS-232C devices to each other.

  24. Short-haul modems Short-haul modems: • Can be used when a computer needs terminal access to a remote device. • Are preferred when the two devices often or always need to be connected.

  25. Short-haul modems Short-haul modem connection

  26. SUMMARY • Repeaters • Hubs and concentrators • Bridges • Routers • Programming routers • Switches • Gateways • Firewalls • Short-haul modems

More Related