Static versus Dynamic Routing

• Entries in a routing table can be static (manually entered by the network administrator) or dynamic (learned through a routing protocol such as RIP).

• Static entries:

  • In the workstation for either:
    • Default Gateway (router) - used by indirect routing
    • Place a static route in for one that is not learned through RIP, etc.

• In the router:

  • Entered as 0.0.0.0 and the next hop (no subnet) to indicate a default route
  • Routers can broadcast this information to their networks to let everyone know which is the default router
    • A default router is one that all other look to for networks that are not in their tables
  • Static routes can be used to increase security on the network
  • Any IP network address can be manually entered into the routing table
  • The router administrator supplies:
    • IP Network address
    • Subnet mask
    • Next hop interface (the IP address of the next routers interface to get to the network)

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