| RFC Number | RFC Name | SLX 9150/SLX 9250, Extreme 8520/Extreme 8720 | SLX 9540 | SLX 9640 | SLX 9740/Extreme 8820 |
|---|---|---|---|---|---|
| RFC 2474 | DiffServ Definition | X | X | X | X |
| RFC 2475 | An Architecture for Differentiated Services | X | X | X | X |
| RFC 2597 | Assured Forwarding PHB Group | X | X | X | X |
| RFC 2697 | Single Rate Three-Color Marker | X | X | X | X |
| RFC 2698 | A Two-Rate Three-Color Marker | X | X | X | X |
| RFC 3246 | An Expedited Forwarding PHB | X | X | X | X |