| Feature hierarchy | Feature Name |
|---|---|
| MPLS: MPLS Over GRE / | Increased scaling values for next-hop-based dynamic GRE tunnels |
| MPLS: MPLS Over GRE / | MPLS over dynamic GRE tunnel scaling of 32K |
| MPLS: MPLS Over GRE / | MPLS-over-GRE through next hop-based dynamic tunnel |
| MPLS: MPLS Over GRE / | MPLS-signaled LSPs to use GRE tunnels |