EIGRP Default Route in production/lab networks

siggnation

I'm progressing through the ROUTE Simplified book and arrived at EIGRP default routes. I was curious, for anyone working with EIGRP mainly in a production network, what would be the best way to advertise a default route to perhaps a stub router? It looks like advertising a static route of 0.0.0.0 0.0.0.0 on the Hub router would work, but i know a summary-address would yield a lower AD. AD is locally significant to the router, so would this even matter?

Thanks!

EdTheLad

The summary-address would not yield a lower AD. There are 2 ways to advertise a default route 1) via redistributed static or 2) summary statement.
"ip default-network" is typically used for any other network than the default, but it's broken in current ios, so i'd forget about it.

Via option 1, you config a static pointing to NH interface, by default AD = 1, redistribute static in eigrp
Via option 2, you config an eigrp summary 0.0.0.0/0 which has an AD = 5

Option 1 will advertise a default and every other eligible eigrp prefix.
Option 2 will only advertise a default. You would config a leak-map to leak more specific prefixes

Choosing one over the other comes down to requirements, if the remote router was a stub and will always be a stub i would choose option 2. I'm not sure why your even thinking about AD here.