ADTRAN Total Access 5000 - Page 169

Section 6, EoTDM Provisioning - Create an EFM Bonding Group
65K510DEP08-1A 6-13
•For1500byteEthernetframes:
%Utilization=(1500)/(1500+28)x(64/65)=96.7%
•Foran8Mbpsbondinggroup,theactualthroughputwouldbe:
8Mbpsx.967=7.736Mbps
•Ifacustomerissolda4Mbpsservice,therequiredEFMgroupsizecalculationwouldbe:
(4
Mbps)/(.967)=4.137Mbps
AnotherpointofreferenceistheEFMbondinggrouputilizationpercentagethatisseen
assuminguniformdistributionofframesizes,from64to1518bytes.Thisvalueis96.0%
assumingtheserviceproviderVLANtagisbeingaddedtothe customertraffic.Assuming
uniformtraffic
size,theEFMgroupwouldneedtobea factorof1.042greaterthanthe
commissionedcustomerratetoprovidethefullcustomerrate.
Theserviceproviderisbestsuitedtodecidewhattrafficmodelitwantstousefornetwork
planning,butthetoolsaboveshouldallowthemtosuitably
determinetheEFMGroup
bandwidthneededtoprovidethecustomerʹsfulltrafficrate.