Redistribution of EIGRP into BGP at iWAN HUB

[jay.patel]

Hello,

I am stuck over a design for route-distribution in hub. DMVPN overlay routing uses EIGRP 400 terminating at two border routers. Routes from legacy wan are distributed into data-center using bgp 65002 on edge routers and then bgp peered to Nexus switches which are in AS 65111. Should I redistribute EIGRP into BGP using a BGP AS number other than 65111 on border router/keep them in same AS. If other AS number, should both border router in same AS or seperate. I am thinking of doing route-tagging to prevent loops. 

I know the question is bit vague but any suggestions / implementation opinions would be highly appreciated.

[Philip D'Ath]

You have a full mesh so I would just stick with 65111 and tag the routes as you suggest.

[jay.patel]

Thank you Philip. Assuming I put both BR into AS65111, I would be doing tagging EIGRP routes being distributed from BR1 into BGP AS65111 and then block them at BR2 and vice-versa. While reading through IWAN discussion forum, they  suggested I should not bgp peer BR1 and BR2. If it is so, do I need to put them into different AS numbers? My concern is to not break Pfr while doing any known practices.