Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

For example, suppose the RTM learns eight ECMPs in the order that the protocols and interfaces came up. In this case, the forwarding information base (FIB) and CAM sort them so that the ECMPs are always arranged. This implementation ensures that every chassis having the same prefixes orders the ECMPs the same.

With eight or less ECMPs, the ordering is lexicographic and deterministic. With more than eight ECMPs, ordering is deterministic, but it is not in lexicographic order.

To enable deterministic ECMP next hop, use the appropriate command.