EasyManuals Logo

ADTRAN TA 5000 User Manual

ADTRAN TA 5000
352 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #117 background imageLoading...
Page #117 background image
Section 4, EoCu Provisioning - Create an EFM Bonding Group
65K510DEP08-1A 4-13
•Ethernetframesbetween513and1024bytes,inclusive:
%Utilization=(FrameSize)/(FrameSize+16)x(64/65)
•Ethernetframes1025bytesorlarger:
%Utilization=(FrameSize)/(FrameSize+24)x(64/65)
TheequationsaboveassumethattheNetVantaisnotaddinganextratagto
thecustomer
traffic(ie.whenthecustomertrafficistagged,andthecustomeredgetagisnotbeing
preserved).Inanycasewherethecustomertagispreserve d(themostlikelyscenario),andthe
NetVanta838issimplystackingtheprovisionedserviceprovidertag(s‐tag)tothecustomer
tag
(ifpresent),thecalculationmustaccountfortheadditional4bytesforthes‐tag,asfollows:
•ForEthernetframes512bytesorsmaller:
%Utilization=(FrameSize)/(FrameSize+12)x(64/65)
•ForEthernetframesbetween513and1024bytes,inclusive:
%Utilization=(FrameSize)/(FrameSize
+20)x(64/65)
•Ethernetframes1025bytesorlarger:
%Utilization=(FrameSize)/(FrameSize+28)x(64/65)
TodeterminetheEFMbondinggroupbandwidththatneedstobeprovisionedsothatthe
customerʹscommissionedrateisprovided,dividethecustomerratebythispercentage:
RequiredEFM
GroupRate=(CustomerCommissionedRate)/(%Utilization.
Followingareexamplecalculationsforcustomerthroughputpercentage,givenafixedframe
size,assumingtheNetVanta838isaddingaVLANtag:
•For64byteEthernetframes(worstcasescenario):
%Utilization=(64)/(64+12)x(64/65)=82.9%
•For
an8Mbpsbondinggroup,theactualthroughputwouldbe:
8Mbpsx.829=6.632Mbps
•Ifacustomerissolda4Mbpsservice,therequiredEFMgroupsizecalculationwouldbe:
(4Mbps)/(.829)=4.825Mbps
•For1500byteEthernetframes:
%Utilization=(1500)/(1500+
28)x(64/65)=96.7%
•Foran8Mbpsbondinggroup,theactualthroughputwouldbe:
8Mbpsx.967=7.736Mbps
•Ifacustomerissolda4Mbpsservice,therequiredEFMgroupsizecalculationwouldbe:
(4Mbps)/(.967)=4.137Mbps
Anotherpointofreferenceisthe
EFMbondinggrouputilizationpercentagethatisseen
assuminguniformdistributionofframesizes,from64to1518bytes.Thisvalueis96.0%
assumingtheserviceproviderVLANtagisbeingaddedtothe customertraffic.Assuming
uniformtrafficsize,theEFMgroupwouldneedtobeafactorof1.042
greaterthanthe
commissionedcustomerratetoprovidethefullcustomerrate.
Theserviceproviderisbestsuitedtodecidewhattrafficmodelitwantstousefornetwork
planning,butthetoolsaboveshouldallowthemtosuitablydeterminetheEFMGroup
bandwidthneededtoprovidethecustomerʹsfull
trafficrate.

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the ADTRAN TA 5000 and is the answer not in the manual?

ADTRAN TA 5000 Specifications

General IconGeneral
BrandADTRAN
ModelTA 5000
CategoryNetwork Router
LanguageEnglish

Related product manuals