Is it possible to perform the following configurations on Cisco routers, and are there any challenges with these types of configurations (mainly #3)?
- Match an OSPF route tag of 12000 (Definitely Possible)
- Redistribute OSPF into BGP (Definitely Possible)
- Set BGP AS Prepend towards a next-hop router (Challenge)
The DMVPN hub will be learning specific and summary routes from the DMVPN spoke via EIGRP 100 (DMVPN Tunnel 100). The DMVPN hub will redistribute these routes into OSPF, and tag them with a value of 12000. To prevent routing loops, or any abnormal routing behavior, I'm trying to prevent any routes with a tag of 12000 from being redistributed into the MPLS.