This attribute has been obsoleted and migrated under the RtVbr
subcomponent. In addition, notApplicable is no longer a valid value
of the new attribute.
This attribute specifies the bandwidth pool which is to be used to
support the variable bit rate real time (rt-VBR) service category.
When the user does not intend to support the rt-VBR service
category, this attribute should be set to notApplicable. Otherwise,
one of the three bandwidth pools should be selected. The percentage
of link capacity reserved for the given bandwidth pool is the
maximum bandwidth that can be allocated to rt-VBR traffic.