QoS specifying reserved bandwidth for a class belonging to a policy-map

When implementing QoS, to specify the bandwidth allocated for a class belonging to a policy map, use the bandwidth command in policy-map class configuration mode. There are three ways in which to allocate bandwidth:

• bandwidth specify a specific bandwidth in kbps. This delivers an absolute bandwidth value. The allowed values vary according to the interface and platform in use.
• bandwidth percent specify an absolute percentage of the available bandwidth. This is a percentage of the interface bandwidth and is unchanging throughout the duration of the operation.
• bandwidth remaining percent specify a percentage of the remaining bandwidth. This is a relative value which depends upon the max reserve bandwidth, which is 75% by default, and upon any unused bandwidth from other classes.

Links

https://www.cisco.com/c/en/us/td/docs/ios/qos/command/reference/qos_book/qos_a1.html#wp1038764

https://forum.networklessons.com/t/introduction-to-qos-quality-of-service/1703/56?u=lagapides