| Feature | Product | Release introduced | 
|---|---|---|
| Equal Cost Trees (ECT) | 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 Virtual Service Network (VSN) | 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 | |
| Switched UNI | VSP 4450 Series | VOSS 5.0 | 
| VSP 4900 Series | VOSS 8.1 | |
| VSP 7200 Series | VOSS 5.0 | |
| VSP 7400 Series | VOSS 8.0 | |
| VSP 8200 Series | VOSS 5.0 | |
| VSP 8400 Series | VOSS 5.0 | |
| VSP 8600 Series | VSP 8600 6.3 | |
| XA1400 Series | Not Supported | |
| Transparent Port UNI (T-UNI) | 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 | VOSS 4.2.1 | |
| VSP 8400 Series | VOSS 4.2.1 | |
| VSP 8600 Series | VSP 8600 6.3 | |
| XA1400 Series | Not Supported |