Scalability of OSPFv3 gets limited by availability of resources like Memory, CPU and hardware tables. While increasing the scale, you need to consider time taken for adjacency formation and route convergence.
The supported scale for OSPFv3 across all VRF instances is as follows:
| Description | Number supported |
|---|---|
| Maximum number of OSPFv3 VRF Instances | 1024 |
| Maximum number of OSPFv3 Areas | 1024 |
| Number of OSPFv3 Interfaces | 2048 |
| Number of OSPFv3 Neighbors | 2048 |
| Maximum Number of OSPFv3 Routes | 64k (65536) |
The supported scale for OSPFv3 per VRF instance is as follows:
| Description | Number supported |
|---|---|
| Maximum number of OSPFv3 Areas | 10 |
| Number of OSPFv3 Interfaces | 256 |
| Number of OSPFv3 Neighbors | 256 |
| Maximum Number of OSPFv3 Routes | 64k (65536) |