Presentation: Networking

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Presentation: Networking

  1. 1. Networking in the Real World Presentation for CS520 Ed Drouillard, IT Services, University of Windsor January 23, 2004
  2. 2. Networking in the Real World <ul><li>Agenda </li></ul><ul><li>Design </li></ul><ul><li>Implementation </li></ul><ul><li>Usability </li></ul><ul><li>Management </li></ul><ul><li>The local network </li></ul><ul><li>Access to External networks </li></ul><ul><li>Future plans </li></ul><ul><li>Q&A </li></ul>
  3. 3. Networking in the Real World <ul><li>Design </li></ul><ul><ul><li>IP Network type </li></ul></ul><ul><ul><ul><li>Class (A, B, C) of IP </li></ul></ul></ul><ul><ul><ul><ul><li>Old Style </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Revamped as the IP space was being used up too quickly </li></ul></ul></ul></ul><ul><ul><ul><li>CIDR blocks </li></ul></ul></ul><ul><ul><ul><ul><li>New Style – less rigid definitions, less IP space waste </li></ul></ul></ul></ul><ul><ul><li>Anticipated size of the network </li></ul></ul><ul><ul><ul><li>Based on number of client connections </li></ul></ul></ul><ul><ul><ul><li>Less complications if you have a uniform address space </li></ul></ul></ul>
  4. 4. Networking in the Real World <ul><li>Design </li></ul><ul><ul><li>Register the Domain name with a Registrar </li></ul></ul><ul><ul><ul><li>www.cira.ca – Canadian Registration Authority </li></ul></ul></ul><ul><ul><ul><ul><li>Listing of companies offering part of the IP space in Canada </li></ul></ul></ul></ul><ul><ul><ul><ul><li>E.g. www.webnames.ca </li></ul></ul></ul></ul><ul><ul><li>Structure </li></ul></ul><ul><ul><ul><li>Star, other topologies </li></ul></ul></ul><ul><ul><ul><li>Subnet Mask, Umask </li></ul></ul></ul><ul><ul><ul><li>Subnet/VLAN plan </li></ul></ul></ul><ul><ul><ul><ul><li>Segregation, Broadcast storms </li></ul></ul></ul></ul><ul><ul><ul><li>Server connection </li></ul></ul></ul>
  5. 5. Networking in the Real World <ul><li>Design </li></ul><ul><ul><li>Ethernet versus ATM </li></ul></ul><ul><ul><ul><li>Ethernet </li></ul></ul></ul><ul><ul><ul><ul><li>Frames (packets) </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Ubiquitous </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Less complicated </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Corporate networks </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Variable traffic more likely, but priorities can now be specified </li></ul></ul></ul></ul><ul><ul><ul><li>ATM (Asynchronous Transfer Mode) </li></ul></ul></ul><ul><ul><ul><ul><li>53 byte Cells </li></ul></ul></ul></ul><ul><ul><ul><ul><li>More costly </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Circuits need to be preplanned and setup between devices </li></ul></ul></ul></ul><ul><ul><ul><ul><li>WAN utilization </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Mixed network, voice, Videoconferencing env. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Good when bandwidth needs to be guaranteed (QOS) </li></ul></ul></ul></ul>
  6. 6. Networking in the Real World <ul><li>Design </li></ul><ul><ul><li>Bandwidth considerations </li></ul></ul><ul><ul><ul><li>Performance requirements </li></ul></ul></ul><ul><ul><ul><li>Ethernet: 10MbE, FE, GbE, 10GbE </li></ul></ul></ul><ul><ul><ul><li>ATM:OC3, OC12, OC48, OC192 </li></ul></ul></ul><ul><ul><ul><li>(155Mb, 622Mb, 2.4Gbps, 10Gbps) </li></ul></ul></ul><ul><ul><li>Application for Autonomous System Number (ASN) ( UoW = 11700) </li></ul></ul><ul><ul><ul><li>Needed when you have more than 1 network provider (rfc1930) </li></ul></ul></ul><ul><ul><ul><ul><li>multi-homed </li></ul></ul></ul></ul><ul><ul><ul><ul><li>a 16 bit integer and hence limited to 65535 ASNs </li></ul></ul></ul></ul>
  7. 7. Networking in the Real World <ul><li>Implementation </li></ul><ul><ul><li>ISP – Internet service provider </li></ul></ul><ul><ul><li>PoP – Point of Presence </li></ul></ul><ul><ul><li>Equipment Vendor Selection </li></ul></ul><ul><ul><ul><li>Cisco, Nortel, Extreme, Cabletron, … </li></ul></ul></ul><ul><ul><li>Routers, Core and Edge switches </li></ul></ul><ul><ul><li>Cable infrastructure </li></ul></ul><ul><ul><ul><li>Fiber types </li></ul></ul></ul><ul><ul><ul><ul><li>Multi-mode, Single-mode </li></ul></ul></ul></ul><ul><ul><ul><li>Copper </li></ul></ul></ul><ul><ul><ul><ul><li>Category 5, 5E, 6, 7, … </li></ul></ul></ul></ul><ul><ul><ul><li>Racks, Patch panels, BIX connectors </li></ul></ul></ul><ul><ul><li>Staffing </li></ul></ul>
  8. 8. Networking in the Real World <ul><li>Usability </li></ul><ul><ul><li>Network address assignment </li></ul></ul><ul><ul><ul><li>IP addressing allocation </li></ul></ul></ul><ul><ul><ul><ul><li>Static versus DHCP </li></ul></ul></ul></ul><ul><ul><li>Security </li></ul></ul><ul><li>Management </li></ul><ul><ul><li>Control </li></ul></ul><ul><ul><ul><li>Load balancers </li></ul></ul></ul><ul><ul><ul><li>Firewalls </li></ul></ul></ul><ul><ul><ul><li>Packet Shapers </li></ul></ul></ul><ul><ul><ul><li>Virus checkers </li></ul></ul></ul><ul><ul><ul><li>SPAM filters </li></ul></ul></ul><ul><ul><li>Monitoring </li></ul></ul><ul><ul><ul><li>Tools </li></ul></ul></ul><ul><ul><ul><ul><li>MRTG, What’s UP, … </li></ul></ul></ul></ul><ul><ul><li>Troubleshooting </li></ul></ul><ul><ul><ul><li>Sniffer </li></ul></ul></ul>
  9. 9. Networking in the Real World <ul><li>The local network </li></ul><ul><ul><li>FE to almost every desktop system using copper </li></ul></ul><ul><ul><ul><li>From network closets in each building </li></ul></ul></ul><ul><ul><li>GbE connected to all major campus buildings </li></ul></ul><ul><ul><li>Fiber connects buildings from UCC </li></ul></ul><ul><ul><li>GbE connected servers in ITS </li></ul></ul><ul><li>The DMZ </li></ul><ul><ul><li>Firewall layer </li></ul></ul><ul><ul><ul><li>Load balancers and firewalls </li></ul></ul></ul><ul><ul><ul><li>External DNS </li></ul></ul></ul>
  10. 10. Networking in the Real World
  11. 11. Networking in the Real World <ul><li>Access to External networks </li></ul><ul><ul><li>WEDnet – Windsor and Essex County public institutions </li></ul></ul><ul><ul><ul><li>School boards, Hospitals, College, University </li></ul></ul></ul><ul><ul><ul><li>ATM based </li></ul></ul></ul><ul><ul><ul><li>Buying club </li></ul></ul></ul><ul><ul><ul><li>uses the City of Windsor’s networking infrastructure </li></ul></ul></ul><ul><ul><li>Providers connected </li></ul></ul><ul><ul><ul><li>Telus – Internet </li></ul></ul></ul><ul><ul><ul><li>Hydro One – Internet </li></ul></ul></ul><ul><ul><ul><li>CA*net – connected to ONET, via AT&T </li></ul></ul></ul><ul><ul><ul><ul><li>Soon to be replaced with CA*net connected through ORION </li></ul></ul></ul></ul>
  12. 12. Networking in the Real World <ul><li>Future plans </li></ul><ul><ul><li>Wireless implementation </li></ul></ul><ul><ul><ul><li>802.11b, 802.11g </li></ul></ul></ul><ul><ul><ul><li>(Shared 11Mbps & 54Mbps) </li></ul></ul></ul><ul><ul><li>More VoIP </li></ul></ul><ul><ul><li>GbE to selected desktops </li></ul></ul><ul><ul><li>Will Require rewiring the campus! </li></ul></ul><ul><ul><li>10GbE </li></ul></ul><ul><ul><li>IPv6 </li></ul></ul><ul><li>Q&A </li></ul>
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