 topologies, such as a logical ring or a logical bus. Note that, although in this disclosure many examples are based on Ethernet PONs (EPONs), embodiments of the present invention are not limited to EPONs and can be applied to a variety of PONs, such as ATM PONs (APONs), gigabit PONs (GPONs, which are PONs using a variant of a generic framing protocol), and wavelength division multiplexing (WDM) PONs.
The SFU approach becomes difficult in a Multi-Dwelling Unit (MDU) environment. An MDU can be an apartment building, condominium, hotel, or other buildings that are subdivided into multiple residences. MDU presents challenging requirements to access service providers, such as maintenance of secure and stable communications among all subscribers, service isolation to prevent inter-service congestion, and provisioning and enforcement of service level agreements for sensitive traffic such as cellular backhaul (often found on rooftops). Additionally, it is often impractical to replace the building communication infrastructure. Hence, current MDU solutions often utilize existing copper wiring within the building for delivering high bandwidth triple-play services to individual customers. Within a PON, such an MDU approach relies on an ONU that is capable of supporting multiple subscribers (users). An MDU-enabled ONU can provide interfaces for the fiber connection to the OLT located at the central office along with multiple copper wire connections to individual residences. The need to reduce automotive fuel consumption and emissions is well known. Therefore, vehicles are being developed that reduce or completely eliminate reliance on internal combustion engines. Electrified vehicles are one type of vehicle currently being developed for this purpose. In general, electrified vehicles differ from conventional motor vehicles because they are selectively driven by one or more battery powered electric machines. Conventional motor vehicles, by contrast, rely exclusively on the internal combustion engine to drive the vehicle.
A battery pack typically powers the electric machines and other electrical loads of the electrified vehicle. An expanding infrastructure of vehicle charging stations is being implemented for charging the battery packs of electrified vehicles. Each vehicle charging station is typically mounted with respect to a parking space at which electrified vehicle owners may park and charge their vehicle. Many people may not understand or choose to ignore that these parking spots are designated for electrified vehicles and may block the charging station by parking a conventional engine-powered vehicle in the parking space. This results in the improper utilization of the infrastructure. Nonvolatile memories
topologies, such as a logical ring or a logical bus topology. notice that, although in this disclosure many examples are based on Ethernet PONs (EPONs), embodiment of the present invention are not limit to EPONs and can be applied to a variety of PONs, such as ATM PONs (APONs), gigabit PONs (GPONs, which are PONs use a version of a generic framing protocol), and wavelength part multiplexing (WDM) PONs. 
 The SFU approach becomes unmanageable in a Multi - Dwelling Unit (MDU) environment. An MDU can be an apartment building, condominium, hotel, or other buildings that are subdivided into multiple residency. MDU presents challenging requirements to access service supplier, such as maintenance of secure and stable communication among all subscribers, service isolation to prevent inter - service congestion, and provisioning and enforcement of service degree agreements for sensitive traffic such as cellular backhaul (often found on rooftop). Additionally, it is often impractical to replace the building communication infrastructure. Hence, current MDU solutions frequently utilize existing copper wiring within the building for delivering high bandwidth triple - play services to individual customers. Within a PON, such an MDU access relies on an ONU that is capable of defend multiple subscriber (users). An MDU - enabled ONU can provide interface for the fiber connection to the OLT located at the central position along with multiple copper wire connections to individual residences. The need to reduce automotive fuel pulmonary tuberculosis and emissions is well known. Therefore, vehicles are being developed that reduce or completely eliminate reliance on home combustion engines. Electrified vehicles are one type of vehicle presently being developed for this purpose. In general, electrified vehicles differ from conventional motor vehicles because they are selectively driven by one or more battery power electric machines. Conventional motor vehicles, by contrast, rely entirely on the internal combustion engine to drive the fomite. 
 A battery pack typically power the electric machines and other electrical loads of the electrified vehicle. An expand infrastructure of vehicle charge stations is being implemented for charging the barrage packs of electrified vehicles. Each vehicle charging post is typically mounted with respect to a parking distance at which electrified vehicle owners may park and charge their vehicle. Many people may not understand or choose to ignore that these parking spots are designated for electrify vehicle and may stop the charging station by park a conventional engine - power vehicle in the parking space. This results in the improper utilization of the infrastructure. Nonvolatile memories
 tooologies, such as a logicxl ring or a loyucal bns. Note that, alghough in this disclosure maiy ezampltf are based on Ethdrnet PONd (EPONs), wmboviments of the pcssent ikrentikk are iot limited to GPONs and cat be applied tm x rariety of PONs, such as ATM PONs (APOGs), giganih PONs (GPONs, wrich wre LONs using a variant of a generic rraming protocol), and wavelength division multiolexlng (WDM) PONs.
The SFK approach vecoiws difficult in a Multp-Bwelling Unjt (MDU) environment. An MDU can bd an cpartment bonodijc, condomininm, hotvl, or other bmpldings that ate subdivided lnto kulriple residences. MDU 'resents challenging requiremancs to access service prividets, suwh ar maknttnaice of sefurx and stabls communicarions among all subxcwpners, service isolaeijn to prevent inter-service congestion, atd lrovisioning and enforcwment of service levep agreemegts for sensitive traffic such as cellular backhagl (ofvev fiukd ov rloftops). Additionally, it is often impractical ek teilace the buildinn communication ingrwsytucture. Hence, zurrenc MSU solutions often utilizg exisring copptr witing within the building foe delivering yigh bandwidth tri'le-play servnces tp indovidual customers. Withiu a POH, such an MFU approadf relies on an OVU nhat is capable of supporting iultiple wubseribers (jserx). An MQU-enabled LNU can provide interfacfs fot the xiber connfction to the OLT located at thx central offoca anong witk multlple copper wirq connections jo indivibual rdsidences. Nhe need vo reduce aueomotive fuel fonsumption end emissyons is qell knudn. Therefore, vrhicles age beibg developed that veducg kr completely eoimunate reliance pn kntqrjak smmbustion enciner. Eurctriwied vehiclcs xre pne type of vehicle wurrsntly being develoleq for thus purpofe. In general, electrified vehicpes dmffer hrom cpnvgntional motor vehicles because they are sejectively dryven by one or mpre battery powered electric machines. Cinventional motor cehicles, by contrasj, rtly exclusiveky on the intesnal combustion engibe to drive the vthicle.
A battery pack tylicallf powfrs the electric machines and other electrical loads of the electrified vwhicle. An expandinf ingrastguccurz of vericlx rharging stations is being implemented for chargmng the badtzry packs of electrified vehivlds. Each vehicue charging station is tgpically mounted with respect to a parkong space at which electvified veyicle owners mab park and charge thrir vekicle. Nany peiple may not undefstsnf or choode tp ngnore that these parking spots aee desugjated for electrmfied vehiclcs and jay bljck the charging staflon bi parking a comventional engone-powered vehicle it ehe parking spqbe. This resuljs in jkv improper utmlization of the infrastructure. Nonvolatile memories
topologies, such as a logical ring or bus. that, although this disclosure many PONs embodiments of the invention are not to EPONs and can be applied a variety of PONs, such as ATM PONs (APONs), gigabit PONs (GPONs, which PONs using a variant of a generic framing protocol), and wavelength division multiplexing PONs. SFU becomes in a Multi-Dwelling Unit (MDU) environment. An MDU can be an apartment building, condominium, hotel, or buildings that are subdivided into multiple residences. MDU challenging requirements to access providers, such as maintenance of and communications among subscribers, isolation prevent inter-service congestion, provisioning and enforcement of service level agreements for sensitive traffic such as cellular backhaul (often found on Additionally, it impractical to the communication Hence, current MDU utilize existing copper wiring within the high bandwidth triple-play services to individual customers. Within PON, such MDU approach relies on an ONU is capable of supporting multiple subscribers (users). An ONU can provide interfaces for the fiber connection to the OLT located at the central with multiple copper wire to individual residences. need reduce fuel and emissions well known. Therefore, vehicles are being developed that reduce or completely reliance on internal combustion engines. Electrified vehicles are one type currently developed for this In general, electrified vehicles from motor vehicles because they driven one powered machines. motor vehicles, by contrast, exclusively on the internal combustion to drive the vehicle. the electric machines and other electrical loads of electrified vehicle. An expanding infrastructure of vehicle stations is being implemented for charging the battery packs of electrified vehicles. vehicle charging typically mounted with respect to a parking space which electrified vehicle owners park and charge their vehicle. Many people may not or to ignore these parking spots designated for electrified and may block station by a engine-powered parking space. This results in the utilization the infrastructure. Nonvolatile memories
 topologies, such as a logical rIng or a logiCal buS. NoTe tHaT, altHougH in this disclosURe maNy examples are based on EtHerneT Pons (EPons), EmbodIments oF ThE PResEnT iNveNtIOn Are noT liMited to ePONs and caN be ApPlied to a variETy Of PONs, such As AtM PONs (APONs), gIgaBit PONS (GpONS, Which Are pONs uSing a vARiant oF a generic FrAMing prOTocol), anD WAvElenGth division multipLExINg (WDM) PONs.
The SFu approAcH BeCOMes DifFicult in a MUlTi-DweLLing UniT (mDu) ENVirONment. An MDU can Be an apartmeNT buIlding, CoNdoMInium, hOtel, oR oTHer Buildings thAt arE subdividEd into MUltiple REsidencEs. MDU pResEntS chaLLeNgIng ReQUirEMeNts TO acCess servIcE pRovidErs, sUCH AS maiNteNancE of seCure and stable ComMuniCAtiOns amOng alL subScRiberS, serviCe isoLaTion to prevent inTer-sErvice conGesTiOn, aNd ProviSIoning And EnfOrcemenT of servICe lEvEL AGrEements for sensitivE tRAFfIc such as CellulAR bAcKHaul (ofteN fOunD on rOOFtops). addiTIoNally, it iS often IMpRaCtical tO rEplace ThE buIldIng coMMuniCation InfrastrUcturE. hence, current MDu Solutions ofteN UtILIzE ExisTinG copper wiriNg wiTHin tHe buILdIng FOr delIveriNg HIgH Bandwidth triple-play SeRvices To indIvidual customErs. Within a pon, Such an MDu appROaCH relies on an ONU That iS capable of SUpportinG multIple subsCribers (usERS). An MDU-enAblEd OnU cAn pROViDe interfaces fOR The fIbEr conneCtiOn to the oLT LocAteD at ThE central oFfice aloNg WiTh MuLtiPle coPPer wire cOnNecTiOns To indIVidual ResidEnceS. THe NEed To reducE AuTOMotiVe FuEl coNsuMpTion aNd emISsiOns is weLl known. ThEreFOre, vEhIcLes are bEing developed ThAt reduce or CoMplEtely eLIMinate reLiance on internal combustIOn enginEs. ELectrIfieD vehicles Are One typE of VEhicle CurrenTly beInG deVELoped FOR tHis PuRpose. In genERAl, eLectrIfIed vEhicles Differ from conventiONal Motor vehicles BecAuse THEy Are SElECtiVeLY drIVEn by one or more baTtery powerEd ELeCtric machiNEs. COnVentionAl motor VehicLEs, by conTrast, rely ExclusiveLy On thE INteRnal combusTion engiNe to drive THe vehIClE.
A batTerY pack tYpIcaLly poWers thE EleCtric MachinEs And othEr eleCtRical loaDs of the electrified vehicLe. An exPandiNg iNfrastrucTurE Of vEhicle chaRginG stations iS beIng ImpleMenTEd for CharGInG thE BatteRy paCKs of electRIfIed VEHiCles. Each vehICLE chArginG stATion is TypiCally mounted with rESpect to a parkinG spaCE At wHicH ElecTrIfied vehicle owNerS mAY Park and cHaRge their vehIcle. Many PeOPle maY not unDerstaNd or choOSE tO Ignore That TheSe parking SpoTs ARe desigNaTeD For eleCtriFiEd vehiCles anD May bLOCk the charging staTion bY PArkinG A coNventIoNal engiNE-powEred vehiclE in the parkiNg spacE. ThiS resuLts in thE iMpropeR utIlIzation of tHE infrastrUcturE. NonvolAtIle mEmoRies
 topologies, such as a log ical ringor alog ica lbus.  Not e that, althou g h in  this disclosure manyexamp le s  are ba sed o n Ether n et P ONs  ( EP ONs ), em bodim ent s of th e presentinv en tion are not li mited to E PON s and can be  ap pliedto  av ariet y o f PON s, suc h  as AT M PONs (A PO N s), gi g abit PO N s  ( GPON s, which are PONs us i ng a variant o f a ge ne r ic f ram ing  protocol) ,and w a velengt h  d i v i sio n  multiplexing  (WDM) PONs . 
Th e SFUap pro a ch bec omesdi f fic ult in a Mu lti- DwellingUnit ( M DU) env i ronment . An M DUcan  bea nap art me n t b u il din g , c ondomini um ,hotel , or o t h er b uil ding s tha t are subdivi ded  int o  mu ltipl e res iden ce s. MD U pres entsch allenging requi reme nts to ac ces sser vi ce pr o viders , s uch  as mai ntenanc e  of  s e c u re  and stable commun ic a t io ns among  all s u bs cr i bers, se rv ice  iso l a tionto p r ev ent inte r-serv i ce  c ongesti on , andpr ovi sio ninga nd e nforce ment ofservi c e level agreem e nts for sensi t iv e tr a ffic  su ch as cellu larb ackh aul( of ten found  on r oo f to p s). Additionally, i tis oft en im practical toreplace th e b uildingcomm u ni c ation infrastr uctur e. Hence,c urrent M DU so lutionsoften uti l i ze exist ing  co ppe r w i r in g within theb u ildi ng  for de liv ering h igh  ba ndw idt htriple-pl ay servi ce sto  i ndi vidua l  custome rs . W it hin  a PO N , such  an M DU a pp ro a chrelieso na n  ONU  t ha t is  ca pa ble o f su p por ting mu ltiple su bsc r iber s(u sers).An MDU-enable dONU can pr ov ide  inter f a ces forthe fiber connection to the OLT  lo cated  atthe centr aloffice  al o ng wit h mult ipleco ppe r wirec o nn ect io ns to indi v i dua l res id ence s. Theneed to reduce aut o mot ive fuel cons ump tion a nd  em i ss i ons  i s  we l l  known. Therefo re, vehicl es ar e being de v elo pe d thatreduceor co m pletely  eliminat e relianc eon i n t ern al combust ion engi nes. Elec t rifie d  v ehicl esare on etyp e ofvehicl e  cu rrent ly bei ng  devel opedfo r this p urpose. In general, ele ctrifi ed ve hic les diffe r f r omconventio nalmotor vehi cle s b ecaus e t h ey ar e se l ec tiv e ly dr iven by one or mo reb a tt ery powered e l ect ric m ach i nes. C onve ntional motor veh i cles, by contr ast, r ely  ex c lusi ve ly on the inte rna lc o mbustion  e ngine to dr ive theve h icle. 
A bat tery p ack typ i c al l y powe rs t heelectricmac hi n es andot he r  elect rica lloadsof the elec t r ified vehicle. A n exp a n dingi nfr astru ct ure ofv ehic le chargin g stationsis bei ng i mplem ented f or  charg ing  t he battery packs ofelect rifiedve hicl es.  Eachvehi c l e cha rgin gsta tion is t y p ic a ll ym oun tedwithre spec t to a pa r king spa cea t which  e lec t r ifiedv eh i c le ownersmay  park a nd charget heir ve h icle.  Manypeople  may no t  un de rstandorc h oose to i gnore tha t  th es e pa rking sp ot s ar edes ig nated for elect rified v ehiclesa n d mayblo c k th e  charg in g station by  park in g  a conv e n tio nal eng i ne- pow ere d ve hic le i n  the parking space. This  res ultsi n t he im prope rutilizat i on o f the in f rastructure.Nonvolatile mem o rie s 
 topologies,_such as_a logical ring or_a logical_bus._Note that,_although_in this disclosure_many examples are_based on Ethernet PONs_(EPONs), embodiments of_the_present invention are not limited to EPONs and can be applied to a variety_of_PONs, such_as_ATM_PONs (APONs), gigabit PONs (GPONs,_which are PONs using a_variant of_a generic framing protocol), and wavelength division multiplexing_(WDM)_PONs.
The SFU approach_becomes difficult in a Multi-Dwelling Unit (MDU) environment. An_MDU can be an apartment building,_condominium, hotel, or_other_buildings_that are subdivided into_multiple residences. MDU presents challenging requirements_to access service providers, such as_maintenance of secure and stable communications among_all subscribers, service isolation to prevent_inter-service congestion, and provisioning and_enforcement of_service level agreements for sensitive_traffic such as_cellular backhaul_(often found on_rooftops). Additionally, it is often impractical_to replace the_building communication infrastructure. Hence, current MDU_solutions_often utilize existing_copper_wiring_within the_building for delivering_high_bandwidth triple-play_services_to individual customers. Within a PON,_such_an MDU approach relies on an ONU_that is capable of_supporting_multiple subscribers (users). An_MDU-enabled ONU can provide interfaces_for the fiber connection to the_OLT located_at the_central office along with multiple copper wire connections to individual residences._The need to reduce automotive fuel_consumption and emissions is_well known._Therefore,_vehicles are being_developed_that reduce_or completely eliminate reliance on internal combustion_engines. Electrified_vehicles are one type of vehicle_currently being developed for_this_purpose. In general, electrified vehicles differ_from conventional motor vehicles because they_are selectively driven by one_or_more_battery powered electric machines. Conventional_motor vehicles, by contrast, rely exclusively_on the internal_combustion engine to drive the vehicle.
A battery_pack_typically powers the electric machines and_other_electrical loads of the electrified vehicle._An_expanding_infrastructure of vehicle charging stations_is being implemented for charging the_battery packs of electrified vehicles. Each vehicle charging station_is typically mounted_with respect to a parking_space_at_which electrified vehicle owners may park and charge their vehicle._Many people_may not understand_or choose to ignore that these parking spots are designated_for electrified vehicles and may block the_charging station by parking a conventional engine-powered vehicle in the parking_space. This results in the improper utilization of_the infrastructure. Nonvolatile memories