Supported scale for OSPFv2 and performance considerations

Scalability of OSPFv2 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 OSPFv2 across all VRF instances is as follows:

Table 1. Supported scale across all VRFs
Description Number supported
Maximum number of OSPFv2 VRF Instances 1024
Maximum number of OSPFv2 Areas 1024
Number of OSPFv2 Interfaces 2048
Number of OSPFv2 Neighbors 2048
Maximum Number of OSPFv2 Routes 100k (102400)

The supported scale for OSPFv2 per VRF instance is as follows:

Table 2. Supported scale per VRF
Description Number supported
Maximum number of OSPFv2 Areas 200
Number of OSPFv2 Interfaces 200
Number of OSPFv2 Neighbors 200
Maximum Number of OSPFv2 Routes 100k (102400)