You have two L3 devices. You want to run a routing protocol like OSPF or BGP between them. You need multiple links for load sharing. Would you do:

1. L2 bundle with SVIs.
2. L3 bundle with routed ports.
3. Routed links with ECMP.

Motivate your answer.

Daniel Dib Depends on the bigger picture. What else is connected to these l3 devices? Is there a down stream switch routing through them? Are these devices running a HA protocol (vrrp?) because then you must use l2 bundle. If nothing else connected, routes links with ecmp seems best suited