RJ45Cat.8:atopicforLAN?

MatthiasGerber,MarketManagerLANCabling,R&M

October2019

Developmentofdatarates

Dataratesfollowtrendcurve:• Moor’slawuntil2010• Slowerincreasesince

Experienceshowsfor2020:• 100GBase-Xwillbestateoftheartbetweenswitches• 40GBase-Xwillbestateoftheartforserveraccess

• 10GBase-TwillbecomethepreferredmediainLAN

?

IEEE40GBase-Tbusinesscase

•  SavingpotentialforTPportsvs.FOports•  SavingpotentialforTPportsvs.QSFPDACports•  Easymigrationfrom10Gto40Gonsamemedia

•  TopoftheRack(TOR)–  PointtoPointconnection–  Onlyfewmeters–  Patchcordsonly

•  EndofRow(EOR)–  2connectorChannels–  30mchannellengthisenough–  Genericcablingsystembetween

cabinets

Responsiblestandardscommittees

Requirements channel

Definition Channel

Definition Permanent Link

Definition Components

IEEE

ISO/IEC SC25/WG3 IEC

TC46 / TC48

ANSI/TIA TR42.7

Definition: Channel,

Permanent Link, Components

40GBase-Tcablingstandardization

•  IEEE802.3bq(09/2016) MDIdefinitionandchannelrequirements

•  ISO/IEC118013rded.(10/2017)30mChannel,Bandwidth2000MHz

–  ClassI(Cat.8.1)BasedoninterpolatedCat.6A

–  ClassII(Cat.8.2)BasedoninterpolatedCat.7A

•  ANSI/TIA568-C.2-1 (07/2016)

30mChannel,Bandwidth2000MHz–  Cat.8

BasedoninterpolatedISO/IECCat.6AComparabletoCat.8.1

Cat.6AISO/IECCat.6ATIACat.7A

Cat.8.1Cat.8.2

Keytechnology:10GBase-T

Thecodingtechnologyof10GBase-T(IEEE802.3an)isalsousedforotherprotocols:

10GBase-T

400MHz

Cat.6A

25GBase-T

1000MHz

Cat.8.1

2.5GBase-T

100MHz

Cat.5e

5GBase-T

200MHz

Cat.6

40GBase-T

1600MHz

Cat.8.1

PLdistance:90mAlienNEXT!

PLdistance:90mPLdistance:90mAlienNEXT!

PLdistance:24mPLdistance:xm

DraftTR11801-9909

Expected:approx.50m

Scenariofor25/40GBase-TinLAN

•  BackwardcompatibleRJ45cablingwithbuiltinmigrationcapabilitiesfrom1G-10G-25G-40G

•  Futureproofingforwirelessbasestationsofthenextgeneration(s)(WLAN/WiFi6,DAS,5Gpicocells)

•  Distancedependingdataratezones•  AsignificantnumberofLANlinkscould

benefitfromatleastadoubelingofthedatarate

•  25GsupportaccordingtoreportISO/IECDTR11801-9909

*Expecteddistancefor25Gsupport:50m

LinklengthdistributioninLAN

•  PermanentLinkdistributionbasedon120kCat.6Alinks•  50mLink-lengthwouldcover62%oftheinstalledbase

Excampleinstallation1

TR1

50m

25m

Planned100workspaces/floor

24mzone

50mzone

TR2

TR1:-24m(40G/8.1):30%WS;75%WAP-50m(25G/8.1):95%WS;100%WAP

TR1&TR2:-24m(40G/8.1):58%WS;100%WAP-50m(25G/8.1):100%WS

Excampleinstallation2

DC

O

Consultancy / MM / PM DPF DPM

CTO / Project Management

PM

/ M

M

CIT

Labo

rato

ry

DTP

Product Support

Tech

nica

l Sup

port

&

Trai

ning

pearl r

oom

CIT

Testing Lab CBS

PEN

CM

O

MarCom & E-Media

MR 04.261

Scr

um R

oom

MR 04.291

MR 04.201

MR 04.301

MR 04.211

MR 04.241

24m zone

24m zone

50m zone

50m zone

TR1

TR2

R&MKubus(2011):(120–180workspaces)

24mzone(40G/Cat.8.1)• 45%workspace• 75%WAP

50mzone(25G/Cat.8.1)• 100%workspace• 100%WAP

90mzone:notneeded

Cat.8.1/ClassI:PermanentLink

•  2connectormodelonly;shieldedcablingsolutionsonly•  DifferentlinklengthmodelsinTIAandISO/IEC

ISO/IEC TIA Recommendation

PermanentLinklength 5m–26m Max.24m 5m–24m

Patchcordlength 2m–4m Max.8m 2m–4m

El.Lengthforattenuationbudget Max.32m Max.32m Max.32m

Mechanicalchannellength Max.30m Max.30m Max.28m

*Max.lengthdependentonselectedpatchcorddiameter(factor:AWG22/23:1;AWG24:1.25;AWG26:2)

*

*

WhytouseCat.8.1inLAN?

•  Cat.8.1isfutureproofandcoversthecablingneedsforthenext10–15years

•  Firstapplicationsareforeseeable(WAP/WiFi6,DAS,5GPicocells)

•  Cat.8.1isthecurrenthigh-endRJ45technology

•  Cat.8.1isfullycompatibletoexistinginstallationsandequipment.Existingpatchcordscanbeused

•  Cat.8.1isavailableandcanbeusedimmediatelly

•  Cat.8.1allowsremotepowering(PoE)•  Cat.8.1’sbasetechnologyiswellknown

andiseasylyapplicable

Summary/Insigths

•  IndatacentersCat.8.1for40GBase-Tisincompetitionwithexisting,proven40GBase-Xtechnologies(FOandDAC)

•  Cat.8.1simplifiesthemigrationfrom1Gto10Gto40G(built-incompatibility)•  Alinklengthof26mlimitstheapplicabilityof40GBase-TinLAN•  Theextendedreachof25GBase-TaccordingDTR11801-9909(e.g.to50m)will

enhancetheusabilityofCat.8.1intheLANenvironment•  Inmanyrealworldinstallationasignificantnumberofworkspaceswouldbenefit

fromabiggerbandwidth

•  RJ45basedCat.8.1havetheadvantageofbuilt-inbackwardcompatibility.Cat.8.2componentshavenoadvantageregardingdataspeed,butneedspecialadaptorpatchcords

•  Cat.8.1componentsmustbecompatibletolowercategorycomponents.I.e.withCat.6Apatchcords10GBase-Tcompatibilitymustbereached

Thankyou!