Seen this behaviour on a 5k Nexus with HP servers.They get too much probleme with servers that does not respect the RFCs with the new code.Did you try to upgrade the drivers/teaming software and try again ?Give us some logs on the Nexus/Server
HiThe rule is -> AD, THEN the prefixe lenghts.The link have been given to you in my response ( 7th April )http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094823.shtml
HiThe router compare routes and select the most specifique router When and only When the came from the same routing protocol.In you exemple this is not your case. You have to understand that your route from the loopback have a administrative distance...
