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Networking

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Networking

  1. 1. Networking And other geeky things you never thought you’d learn
  2. 2. Job Description: Even though Salary was “unspecified” it pays over 400 grand per year!!! Responsibilities * Serve as member of the Global Network Team for Genworth Financial, a global business with more than 5,000 employees worldwide. Perform LAN/WAN Hardware Installation, configuration and Management; The equipment includes Cisco routers, Cisco PIX, Nokia Checkpoints, Cisco switches, Big IP F5s, 3DNS F5, Cisco VPN devices and other networking gear. * Act as primary network technical specialist supporting the separation of the network between GE and Genworth. * Integrate Europe and Australia into the Genworth core network. * Technical leader for BGP and EIGRP routing protocols and installation. * Responsible for technical support and maintenance of Genworth Financial LAN/WAN, including capacity planning, tuning, router configurations, and troubleshooting the network and related devices. * Evaluate network capacity and make upgrade recommendation in alignment with GNW strategies. * Comply with change control processes.
  3. 4. APPLICATION <ul><li>Word Processing </li></ul><ul><li>Graphics </li></ul><ul><li>Spread Sheets </li></ul><ul><li>Communications ( E-mail, Internet) </li></ul><ul><li>Databases </li></ul><ul><li>Games </li></ul><ul><li>Each has its own format (i.e. Mp3, .doc, .xls) </li></ul>
  4. 5. Presentation <ul><li>“ On the way down” changes data from application info to NETWORK info. </li></ul><ul><li>This allows for independence from conflicts in different data presentations </li></ul><ul><li>It also “encrypts” the data for travel over a network </li></ul><ul><li>Unencrypted Data is called “Plain Text” </li></ul>
  5. 7. Session <ul><li>The Three Way Handshake </li></ul><ul><li>“ The Phone Call” of Networking </li></ul><ul><li>Think of your old Dial Up Access </li></ul><ul><li>If Dial Up is still new to you, think of the old operators </li></ul><ul><li>Also terminates session </li></ul>
  6. 8. Transport/Transfer <ul><li>TCP ( Transmission Control Protocol) </li></ul><ul><li>Sliding Window </li></ul><ul><li>How Big of “Bytes” to take </li></ul><ul><li>The firehose and the drinking fountain </li></ul><ul><li>“ X-on X-off ” </li></ul><ul><li>Buffer ( Wax on Wax off?) </li></ul><ul><li>Show me the T3 !!! </li></ul><ul><li>Error recovery </li></ul>
  7. 10. Network <ul><li>Here’s where Cisco makes the money! </li></ul><ul><li>Switching and Routing and Packets OH MY! </li></ul><ul><li>Forwarding and Hops </li></ul><ul><li>LAN’s, WAN’s and Wi-Fi ( no Ron, not Hi-Fi) </li></ul><ul><li>IP address more on this later ! </li></ul>
  8. 11. Data-Link Layer <ul><li>Device Permission to receive data (MAC number) and send it </li></ul><ul><li>error checking </li></ul><ul><li>Flow control…..the long and painful phone conversation </li></ul><ul><li>FRAMES </li></ul>
  9. 12. Physical <ul><li>The Hardware </li></ul><ul><li>0’s and 1’s </li></ul><ul><li>Electric Light Orchestra </li></ul>
  10. 13. Terms to know <ul><li>Static IP </li></ul><ul><li>Dynamic IP </li></ul><ul><li>VPN ( virtual private network ) </li></ul><ul><li>Subnetting </li></ul><ul><li>Ports </li></ul><ul><li>VOIP ( Voice over IP ) </li></ul><ul><li>Ethernet </li></ul><ul><li>Cat 5 </li></ul>
  11. 14. MORE terms to know <ul><li>Digital </li></ul><ul><li>Analog ( almost outdated ) </li></ul><ul><li>Switch </li></ul><ul><li>Router </li></ul><ul><li>Fiber (Not a Bran Muffin) </li></ul><ul><li>Ports </li></ul>
  12. 15. Cutting Edge <ul><li>SIP Phones ( Session Initiated Protocol) </li></ul><ul><li>Digital Guitar </li></ul><ul><li>PVR’s ( a video iPod?) </li></ul><ul><li>Household Gadget IP’s </li></ul><ul><li>Are you kidding me? </li></ul><ul><li>Windows with a twist! </li></ul><ul><li> Smart Rooms ! </li></ul><ul><li>CSI in real life! </li></ul>
  13. 16. It Takes Two <ul><li>Let’s stop and look at Binary Octets </li></ul><ul><ul><li>( A great name for a retro punk band don’t you think?) </li></ul></ul>
  14. 17. IP- Therefore I AM <ul><li>150.215.17.9 10010110.11010111.00010001.00001001 </li></ul><ul><li>150.215.0.0 = The network name </li></ul><ul><li>10010110.11010111. 00000000.00000000 </li></ul><ul><li>150.215.255.255= the “Broadcasting Network” </li></ul><ul><li>10010110.11010111. 11111111.11111111 </li></ul>
  15. 18. Subnetting for “Cheaters” <ul><li>“ Borrowing” Bits </li></ul><ul><li>10010110.11010111 .00000000.00000000 </li></ul><ul><li>network Users </li></ul><ul><li>10010110.11010111 . 0000 0000.00000000 </li></ul><ul><li>borrow </li></ul><ul><li>IP=150.215.0.0 </li></ul><ul><li>Subnet= 255.255.240.0 </li></ul>
  16. 19. Welcome to Nerdville

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