Calculating Mab Percentages - Motorola BSR 2000 Configuration And Management Manual

BSR 2000 Configuration and Management Guide

Calculating MAB Percentages

The total percentage of combined MABs for all upstream or all downstream service
classes can not exceed 100%. If a user attempts to exceed this threshold, the BSR will
adjust the desired MAB percentage accordingly so it does not exceed 100%. For
example, the total combined upstream MABs is 70% as displayed in the following
output from the show cable service-class command.
Upstream Service Classes
Service Class
-------------------------------------------------
DefBEUp
DefRRUp
DefUGS
DefUGSAD
DefRTPS
DefNRTPS
DefEMUp
Total assigned bandwidth (mab sum): 70%
The remaining MAB available is 30%. The DefEMUp service class has a MAB of
10%. If a user attempts to change the MAB percentage for the DefEMUp service class
to 50%, the following output would be displayed with the show cable service-class
command reflecting that the additional 10% MAB requested for the DefEMUp
service class was not allowed by the BSR and the MAB for the DefEMUp service
class was adjusted downward to 40%.
Upstream Service Classes
Service Class
-------------------------------------------------
DefBEUp
DefRRUp
DefUGS
DefUGSAD
DefRTPS
DefNRTPS
DefEMUp
Total assigned bandwidth (mab sum): 100%
6-106
mab cap
10 0
10 0
10 100
10 80
10 5
10 5
10 100
mab cap
10 0
10 0
10 100
10 80
10 5
10 5
40 100
MGBI
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526360-001-00 Rev. B