hwCBQoSCarPbs 1.3.6.1.4.1.43.45.1.5.25.32.1.1.2.3.1.5

Peak Burst Size. Unit: byte. 64..4000000.(default:cbs when Peak Information Rate configured) Only hardware QoS support this node. -1 is returned only when getting value from software QoS. -1 can't be set.