| Feature | Product | Release introduced | 
|---|---|---|
| IEEE 802.1ag Connectivity Fault Management (CFM): 
 | VSP 4450 Series | VSP 4000 4.0 | 
| VSP 4900 Series | VOSS 8.1 | |
| VSP 7200 Series | VOSS 4.2.1 | |
| VSP 7400 Series | VOSS 8.0 | |
| VSP 8200 Series | VSP 8200 4.0 | |
| VSP 8400 Series | VOSS 4.2 | |
| VSP 8600 Series | VSP 8600 4.5 | |
| XA1400 Series | VOSS 8.0.50 Layer 2 Ping only | |
| CFM configuration on C-VLANs | VSP 4450 Series | VSP 4000 4.0 | 
| VSP 4900 Series | Not Supported | |
| VSP 7200 Series | Not Supported | |
| VSP 7400 Series | Not Supported | |
| VSP 8200 Series | Not Supported | |
| VSP 8400 Series | Not Supported | |
| VSP 8600 Series | Not Supported | |
| XA1400 Series | Not Supported |