mscAtmIfCARtVbrEmissionPriority
1.3.6.1.4.1.562.36.2.1.114.3.3.100.1.82
This attribute is not applicable and is ignored for CQC-based ATM
cards.
For the 1pOC48SmSrAtm card, only the default value is supported.
For 4pOC12SmIrAtm and 4pOC12SmLrAtm cards the default
value is 2.
This attribute specifies the emission priority (EP) which is used to
transmit traffic of the rt-VBR service category. A lower numerical
value for this attribute specifies a higher emission priority. 0 is the
highest EP and 7 is the lowest. Cells at a higher emission priority
receive higher preference for link bandwidth. EPs 0 and 1 are in the
absolute priority range, and are unaffected by any minimum
bandwidth guarantees. EPs 2 through 7 are in the guaranteed
bandwidth range. Minimum bandwidth guarantee is specified in the
AtmIf/n Ep/m component.
Emission priority setting must comply with all of the following
constraints:
1. The emission priority numbers must be in the following order:
CBR <= rt-VBR <= nrt-VBR <= ABR <= UBR
2. Two different ATM service categories may share the same EP
only if they are both shaped.
3. CBR and rt-VBR may be placed either in the absolute priority
range (EP 0 or 1) or in the guaranteed bandwidth range (EP 2
through 7).
4. If both CBR and rt-VBR are shaped, rt-VBR must share the
same EP with CBR or ABR. If either one of CBR or rt-VBR are
not shaped, then they cannot share the same EP.
5. ABR service category is always deemed to be shaped. If nrt-VBR
is shaped, it must share the same EP with ABR. If nrt-VBR is not
shaped it must have a higher EP than ABR.
6. If UBR is shaped, it must share the same EP with ABR. If UBR
is not shaped, it must have a lower EP than ABR.
This attribute does not apply to basic Vpts, and standard Vpt Vccs.