EIGRP default routes

• The EIGRP default routes "default-network" must be on a MAJOR CLASSFUL boundary.
• The "default-network" must be either in the routing table as External-EIGRP or need to be advertised in EIGRP with the network command.
• For EIGRP to propagate the default route, the network specified by the ip default-network command must be known to EIGRP. This means the network must be an IGRP- or EIGRP-derived network in the routing table, or the static route used to generate the route to the network must be redistributed into EIGRP.

 router eigrp 10
   network 192.168.10.0
   network 10.0.0.0
   default-information [in|out] [access-list|access-name]