Content

| 8.5 |  | Scheduling |
| 8.5.7 |  | CBWFQ bandwidth allocation |

The sum of all bandwidth allocation on an interface cannot exceed 75 percent of the total available interface bandwidth. The remaining 25 percent is used for other overhead, including Layer 2 overhead, routing traffic, and best-effort traffic. Bandwidth for the CBWFQ class-default class is taken from the remaining 25 percent. However, under aggressive circumstances in which it is necessary to configure more than 75 percent of the interface bandwidth to classes, the 75 percent maximum can be overridden using the max-reserved-bandwidth command. Exercise caution when using this command and ensure that there is enough remaining bandwidth to support best-effort, control traffic and Layer 2 overheads.

> Router(config-if)#max-reserved-bandwidth percent