4.9 - Redistribution, Chicken and Egg Eroblem With The Provided Solution
Doesn't look right to me when it comes to changing OSPF's external AD from 110 to 171.
This will lead to a chicken and egg problem. If OSPF externals gets better than EIGRP external routes, when routers redistributed by R6 will have trouble in the EIGRP domain. And if EIGRP EX routes get better than OSPF external routes, then R5 redistributed routes will have trouble in the OSPF domain.
Basically, changing this AD for ALL externals or ALL internals shouldn't happen in my view.. If we want to do it right, then we should selectivly change AD based on an ACL that matches exactly the redistributed routes accordingly.
Your feedback please.