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  1. Introduction
  2. OSI Layers
  3. Addresses
  4. SNMP
  5. Network Tools
  6. Routing
  7. ARP
  8. WINS
  9. DNS
  10. NIS
  11. DHCP
  12. Name Resolution
  13. RAS
  14. Connections
  15. Test Pointers
  16. Items to remember
  17. Terms
  18. Credits

Routing

Routing and Performance

Routing requires a computer to be multihomed which means it has more than one network card. However some servers do not work very well when multihomed. These are:

  • WINS
  • Domain controllers
  • Exchange

RIP

RIP routing tables provide at least:

  • IP destination address
  • Hop metric from 1 to 15.
  • Next router IP address
  • Timers
  • Marker showing recent route changes

No more than 15 hops can be uses when using RIP on a network.

NT and RIP

NT 4.0 supports RIP. To use it you must:

  • Have two network cards on the server with proper IP addresses and subnet masks set up.
  • In the control panel, network applet, protocols tab, TCP/IP properties routing tab, check the "Enable IP Forwarding" checkbox.
  • On the control panel, network applet, services tab, add the "RIP for Internet Protocol" service.

OSPF

Metric limit is 65535. Each node creates a network tree and considers itself to be at the root of the tree. Administrators can set costs for specific links or hops. OSPF can balance network load between various routes when multiple routes exist. Broadcasting is done less than RIP broadcasting. Information about multiple routers may be carried on routing update packets. Adjacent routers swap information rather than sending to all routers.