Hello Anita,
another way to propagate a default route in EIGRP is to use the ip default-network command
router eigrp 1
network 192.168.10.0
network 172.16.0.0
!
ip default-network 192.168.10.0
the requirements are:
the network in the default-network has to be in another major network (Class A,B, C)
a network command for it has to be present in the EIGRP process.
In this case the network propagated is that of the default-network with an EIGRP flag that signals the capability to be network of last resort.
It works also if the network is reached via a static route not only if it is a connected subnet.
This command is also supported by RIP but not by link state protocols
note: the router advertising the default route needs to have its own default static route to be able to route to gateway of last resort.
Hope to help
Giuseppe
