IPv4 Unicast Routing

This chapter assumes that you are already familiar with IP unicast routing. If not, refer to the following publications for additional information:
  • RFC 1256—ICMP Router Discovery Messages
  • RFC 1812—Requirements for IP Version 4 Routers


For more information on interior gateway protocols, see:

For information on exterior gateway protocols, see BGP.

For more information on switch support for IPv6, IPv6 Unicast Routing.