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Installation

Rev 1.2

Mellanox Technologies

• For Safety Warnings in Italian, see

Section E.11, “Avvertenze di sicurezza per

l’installazione (Italian),” on page 101

• For Safety Warnings in Turkish see

Section E.12, “Montaj Güvenlik Uyar

lar

(Turk-

ish),” on page 105

2.2

Air Flow

Mellanox systems are offered with two air flow patterns:
• Power (rear) side inlet to connector side outlet - marked with blue power supplies/fans-

FRUs’ handles, as shown in Figure 4.

• Connector (front) side inlet to power side outlet - marked with red power supplies/fans

FRUs’ handles, as shown in figure Figure 5.

Table 6 provides an air flow color legend and respective OPN designations.

All servers and systems in the same rack should be planned with the same airflow
direction.

All FRU components need to have the same air flow direction. A mismatch in the air
flow will affect the heat dissipation.

Table 6 - Air Flow Color Legend

Direction

OPN

Designation

Description

Ending with

“-R”

Connector side inlet to power side outlet.
Red latches are placed on the power inlet
side.

Ending with

“-F”

Power side inlet to connector side outlet.
Blue latches are placed on the power inlet
side.

Содержание Spectrum SN2410

Страница 1: ...www mellanox com Mellanox 1U Switch Systems Hardware User Manual Models SN2700 and SN2410 Rev 1 2...

Страница 2: ...T PRODUCT S AND ITS RELATED DOCUMENTATION ARE PROVIDED BY MELLANOX TECHNOLOGIES AS IS WITH ALL FAULTS OF ANY KIND AND SOLELY FOR THE PURPOSE OF AIDING THE CUSTOMER IN TESTING APPLICATIONS THAT USE THE...

Страница 3: ...Mounting Telescopic Rail Kit for SN2700 23 2 4 3 19 Systems Mounting Static Rail Kit for SN2410 28 2 5 Cable Installation 32 2 5 1 Breakout Cables and Adapters 32 2 6 Initial Power On 34 2 7 System B...

Страница 4: ...y and Disposal 66 D 1 Disassembly Procedure 66 D 2 Disposal 66 Appendix E Safety Warnings Multiple Languages 67 E 1 Nordic Countries Notices 67 E 2 Installation Safety Warnings English 67 E 3 Hebrew 7...

Страница 5: ...igure 15 Installing the Cage Nuts 25 Figure 16 Mounting the Outer Rails into the Rack 25 Figure 17 Attaching the Inner Rails to the Chassis 26 Figure 18 Securing the Chassis in the Inner Rails 26 Figu...

Страница 6: ...ure 39 Rear Side Panel 49 Figure 40 SN2700 Port LEDs 51 Figure 41 SN2410 SFP28 Port LEDs 51 Figure 42 SN2410 QSFP28 Port LEDs 51 Figure 43 SN2700 Pull out Tab 52 Figure 44 SN2410 Inventory Information...

Страница 7: ...onfiguration Wizard Session 37 Table 12 Configuration Wizard Session Static IP Configuration 38 Table 13 LEDs Symbols 46 Table 14 System Status LED Assignments 47 Table 15 Fan Status Front LED Assignm...

Страница 8: ...16 1 2 Updated Introduction to Mellanox SN2XXX Spectrum Ethernet Switch Systems Software Management Troubleshooting Instructions Specifications Accessory and Replacement Parts Added Taiwan BSMI Class...

Страница 9: ...cription MLNX OS User Manual This document contains information regarding the configuration and man agement of the MLNX OS software See http www mellanox com page mlnx_os Cumulus Linux User Guide This...

Страница 10: ...Rev 1 2 Mellanox Technologies 10 This icon indicates a situation that can potentially cause damage to hardware or software This icon indicates a situation that can potentially cause personal injury...

Страница 11: ...lieves some of the major obstacles standing in the way when deploying a network NEO enables a fully certified and interoperable design speeds up time to service and RoI The systems introduce hardware...

Страница 12: ...nformation see Breakout Cables and Adapters 1 3 Management Interfaces and FRUs Table 4 lists the various management interfaces and available replacement parts per system model Table 3 Speed and Switch...

Страница 13: ...Kit RoHS6 MSN2700 CS2R Spectrum based 100GbE 1U Open Ethernet Switch with MLNX OS 32 QSFP28 ports 2 Power Supplies AC Standard depth x86 CPU C2P airflow Rail Kit RoHS6 MSN2700 CS2FO Spectrum based 100...

Страница 14: ...lus Linux 48 SFP28 ports 8 QSFP28 ports 2 power supplies AC x86 dual core Short depth P2C airflow Rail Kit RoHS6 MSN2410 BB2RC Spectrum based 10GbE 40GbE 1U Open Ethernet switch with Cumulus Linux 48...

Страница 15: ...rdic Countries Notices see Section E 1 Nordic Countries Notices on page 67 For Safety Warnings in English see Section E 2 Installation Safety Warnings English on page 67 For Safety Warnings in Hebrew...

Страница 16: ...nlet to power side outlet marked with red power supplies fans FRUs handles as shown in figure Figure 5 Table 6 provides an air flow color legend and respective OPN designations All servers and systems...

Страница 17: ...Package Contents Before installing your new system unpack it and check against the parts list below that all the parts have been sent Check the parts for visible damage that may have occurred during...

Страница 18: ...the Static Rail kit see Figure 6 2x Rack mount rails A 2x Rack mount brackets B 2x Rack mount blades C 8x M6 Standard cage nuts and 8x M6 Standard pan head Phillips screws D 4x Phillips100 DEG F H TY...

Страница 19: ...points Make sure the system air flow is compatible with your installation selection It is important to keep the airflow within the rack in the same direction Note that the part of the system to which...

Страница 20: ...s by screwing 2 flat head Phillips screws E in the designated points with a torque of 1 5 0 2 Nm See Figure 8 Figure 8 Attaching the Rails to the Chassis Step 3 Attach the left and right rack mount br...

Страница 21: ...ile your installation partner is supporting the system s weight perform the following steps Step 5 Mount the system into the rack enclosure and attach the brackets installed on the system to the rack...

Страница 22: ...of 4 5 0 5 Nm 2 4 1 1 Removing the System from the Rack To remove a unit from the rack Step 1 Turn off the system and disconnect it from peripherals and from the electrical outlet While your installa...

Страница 23: ...rails C 2x Outer rails D 10x M6 Standard cage nuts and 10x M6 Standard pan head Phillips screws E 2x Phillips100 DEG F H TYPE I ST ST 6 32 X 1 4 screw with around patch F Other threads are available...

Страница 24: ...gure 14 Rails Separation To separate the rails 1 Extend the rail assembly by pulling the extension outwards D 2 Extract rail A from rail C by pushing it outside from the rear part of the assembly To a...

Страница 25: ...lacement of the system s rails The FRU side is extractable Mounting the sliding rail inverted to the system will allow you to slide the FRU side of the system in and out Step 1 Install 10 cage nuts in...

Страница 26: ...ecure the chassis in the inner rails by screwing the 2 flat head Phillips screws F in the desig nated points with a torque of 1 5 0 2 Nm Figure 18 Securing the Chassis in the Inner Rails Step 6 Slide...

Страница 27: ...2 1 Removing the System from the Rack To remove a unit from the rack Step 1 Turn off the system and disconnect it from peripherals and from the electrical outlet Step 2 Unscrew the two M6 screws secu...

Страница 28: ...are included in the Static Rail kit see Figure 6 2x Rack mount rails A 2x Rack mount blades B 8x M6 Standard cage nuts and 8x M6 Standard pan head Phillips screws C At least two people are required t...

Страница 29: ...ompatible with your installation selection It is important to keep the airflow within the rack in the same direction Note that the part of the system to which you choose to attach the rails the front...

Страница 30: ...ach side a total of 4 screws See Figure 24 To tighten the screws use a torque of 1 5 0 2 Nm Figure 24 Attaching the Rails to the Chassis Step 2 Install 8 cage nuts C in the desired 1U slots of the rac...

Страница 31: ...g four M6 screws C Do not tighten the screws yet See Figure 26 Figure 26 Attaching the Rails to the Rack Step 4 Slide the two blades into the left and right rails and adjust them to fit your rack s de...

Страница 32: ...f Mellanox Cable Man agement Guidelines and FAQ For more information about port LEDs refer to Port LEDs Figure 28 Cable Orientation 2 5 1 Breakout Cables and Adapters A 100GbE port can be split to two...

Страница 33: ...chd service using the sudo systemctl restart switchd command For more details see Layer 1 and Switch Port Attributes in the Cumulus Linux User Guide Figure 29 Breakout or Fanout Cables 2 5 1 3 SN2700...

Страница 34: ...h normal operation initially flashing and then moving to a steady color as shown in Figure 32 below For more information refer to LEDs The system platform will automatically power on when AC power is...

Страница 35: ...the green System Status LED light is on make sure that the Fan Status LED shows green If the Fan Status LED is not green unplug the power connection and check that the fan module is inserted properly...

Страница 36: ...Step 3 Login as admin and use admin as password On the first login the MLNX OS configuration wizard will start Step 4 To configure network attributes and other initial parameters to the system follow...

Страница 37: ...to use IPv6 addresses If you enter no no IPv6 you will automatically be referred to Step 6 Step 4 Enable IPv6 auto config SLAAC on mgmt0 interface no This turns on auto configuration of the IPv6 addre...

Страница 38: ...imary IP address for example 192 168 10 4 10 10 10 10 Mask length may not be zero if address is not zero interface eth0 Step 5 Netmask 0 0 0 0 255 255 255 0 Step 6 Default gateway for example 192 168...

Страница 39: ...eps Step 1 Set up an Ethernet connection between the system and a local network machine using a stan dard RJ45 connector Step 2 Start a remote secured shell SSH using the command ssh l username IP_add...

Страница 40: ...placeable power supply units work in a redun dant configuration Either unit may be extracted without bringing down the system To extract a power supply unit Step 1 Remove the power cord from the power...

Страница 41: ...p 5 Insert the other end of the power cord into an outlet of the correct voltage 2 8 2 Fans The system can fully operate if one fan FRU is dysfunctional or missing Failure of more than one fan is not...

Страница 42: ...insert a fan unit Step 1 Make sure the mating connector of the new unit is free of any dirt and or obstacles Step 2 Insert the fan unit by sliding it into the opening until slight resistance is felt C...

Страница 43: ...he CLI or the GUI in order to perform software upgrades For further information please refer to the MLNX OS Software User Manual section Upgrading MLNX OS Software Be sure to read and follow all of th...

Страница 44: ...rts 4 1 2 Speed Ethernet speed must be set manually The system s ports can be manually configured to run at speeds ranging from 1GbE to 100GbE for more details see Specifications To change the port sp...

Страница 45: ...em next to the fan status LEDs This reset button requires a tool to be pressed To reset the system and the CPU of its management board push the reset button and keep it pressed for up to 15 seconds To...

Страница 46: ...13 LEDs Symbols Symbol Name Description Normal Conditions System Status LED Shows the health of the system Green Flashing green when booting Fan Status LED Shows the health of the fans Green Power su...

Страница 47: ...your Mellanox representative for assistance Table 14 System Status LED Assignments LED Behavior Description Action Required Solid Green The system is up and running nor mally N A Flashing Green The sy...

Страница 48: ...unit that indicates the status of the unit Table 15 Fan Status Front LED Assignments LED Behavior Description Action Required Solid Green All fans are up and running N A Solid Red Error one or more f...

Страница 49: ...the FRUs might be faulty and should then be replaced Off N A N A Table 18 Power Supply Unit Status Rear LED Assignments LED Behavior Description Action Required Solid Green The PSU is running normally...

Страница 50: ...l errors in one or more system ports Table 19 shows the bad port status LED assignment Table 19 Bad Port LED Assignments LED Configuration Description Action Required Off No symbol errors have been re...

Страница 51: ...een If the ports run at a 50GbE speed each the left LEDs 1 and 2 will light green for the upper port and the right LEDs 3 and 4 will light green for the lower port If the ports run at a 25GbE speed ea...

Страница 52: ...parameters such as serial number part number GUID and MAC address can be extracted from the inventory pull out tab on the lower right side of the front panel In some systems there is no pull out tab a...

Страница 53: ...Interfaces Rev 1 2 Mellanox Technologies 53 Figure 45 SN2410 Inventory Information Illustration...

Страница 54: ...the software status You might need to contact an FAE if the MLNX OS software did not load properly System Status LED is red This state can indicate a number of problems Critical system fault CPU error...

Страница 55: ...or boot menu Booting default image in 3 seconds Boot Menu 0 SX_X86_64 SX_3 4 0008 2014 11 10 20 07 51 x86_64 1 SX_X86_64 SX_3 4 0007 2014 10 23 17 27 34 x86_64 Use the ArrowUp and Arrowdown keys to se...

Страница 56: ...ure Operational 0 to 45 C Non Operational 40 to 70 C Humidity Operational 10 85 non condensing Non Operational 10 90 non condensing Altitude 3050m Regulatory Safety CS cTUVus CE CU EMC CE FCC VCCI ICE...

Страница 57: ...Specifications Rev 1 2 Mellanox Technologies 57 Switching Capacity 6 4Tb s Table 22 SN2700 Specifications Feature Value...

Страница 58: ...erational 10 85 non condensing Non Operational 10 90 non condensing Altitude 3050m Regulatory Safety CS cTUVus CE CU EMC CE FCC VCCI ICES RCM RoHS6 Power Input Voltage 100 127Vac 50 60Hz 4 5A 200 240...

Страница 59: ...U wide systems to be mounted into short depth racks MTEF KIT SP Rack installation kit for 1U wide systems to be mounted into standard depth racks MTEF PSF AC A 460W AC Power Supply w rear to front air...

Страница 60: ...the switch has crossed the Warning threshold Note that this temperature threshold does not require nor lead to any action by hardware such as switch shutdown Critical 120 C When the device crosses th...

Страница 61: ...9 ResetL Module Reset 10 Vcc Rx 3 3 V Power supply receiver 11 SCL 2 wire serial interface clock 12 SDA 2 wire serial interface data 13 GND Ground 14 Rx3p Receiver Non Inverted Data Output 15 Rx3n Rec...

Страница 62: ...8 3 3 3 3 3 3 3 3 RX4p GND GND GND RX4n RX2p RX2n TX1n GND TX1p GND TX3n TX3p GND IntL ModPrsL VccTx Vcc1 LPMode 18 35 8 50 Top ResetL SDA SCL ModSelL RX3p TX2n GND VccRx 1 2 3 4 5 6 7 8 9 10 1 2 3 4...

Страница 63: ...ment Mellanox Technologies MTSFPP SR Module 14 80 13 60 56 50 13 70 1 80 1 55 44 95 8 50 2 55 0 50 0 60 13 90 11 85 13 70 8 50 Top VeeT VeeT VeeT TX_Fault TX_Disable SDA SCL MOD_ABS RS0 RX_LOS RS1 Vee...

Страница 64: ...st board to a voltage between 2 0V and 3 6V MOD_ABS pulls line low to indicate module is plugged in 5 SCL 2 wire Serial Interface Clock Line d 6 MOD_ABS Module Absent Grounded within the module d 7 RS...

Страница 65: ...Mellanox Technologies 65 C 3 RJ45 to DB9 Harness Pinout In order to connect a host PC to the Console RJ45 port of the system a RS232 harness cable DB9 to RJ45 is supplied Figure 48 RJ45 to DB9 Harness...

Страница 66: ...7 Remove the caged nuts D 2 Disposal Follow the instructions found at http www mellanox com page dismantling_procedures for proper disassembly and disposal of the switch according to the WEEE directi...

Страница 67: ...llation instructions before connecting the equipment to the power source Use enough people to safely lift this product This equipment is heavy and should be moved using a mechanical lift to avoid inju...

Страница 68: ...s double pole neutral fusing Remove all power cords before opening the cover of this product or touching any internal parts Risk of electric shock and energy hazard The PSUs are all independent Discon...

Страница 69: ...g Replace only with UL Recognized battery certified for maximum abnormal charging current not less than 4mA There is a risk of explosion should the battery be replaced with a battery of an incorrect t...

Страница 70: ...rated in the building wiring Caution Slide rail mounted equipment is not to be used as a shelf or a work space The rails are not intended for sliding the unit away from the rack It is for permanent in...

Страница 71: ...Rev 1 2 Mellanox Technologies 71 2 3 4 5 6 7 40 lbs 18 kgs 40 70 lbs 18 32 kgs 70 121 lbs 32 55 kgs 121 lbs 55 kgs...

Страница 72: ...Mellanox Technologies 72 8 9 10 11 12 13...

Страница 73: ...Rev 1 2 Mellanox Technologies 73 14 15 16 17 18 19...

Страница 74: ...Mellanox Technologies 74 20 21 WEEE 22 E 4 Chinese 1 2 40 lbs 18 kgs 40 70 lbs 18 32 kgs 70 121 lbs 32 55 kgs 121 lbs 55 kgs...

Страница 75: ...Rev 1 2 Mellanox Technologies 75 3 4 5 6 7 8 9 45 C 113 F 8 3 PSU...

Страница 76: ...Mellanox Technologies 76 10 11 12 13 14 15 16 UL 4mA...

Страница 77: ...Rev 1 2 Mellanox Technologies 77 17 UL CSA 18 19 20 21 22 WEEE UL CSA 16 AWG 125 V 13 A 1 5 4 5 HAR 1 0 300 V PVC 250 V 10 A RS232 UL DP 1 DP 2 LPS 20 A WEEE 2002 96 EC EEE...

Страница 78: ...Mellanox Technologies 78 23 24 China CCC Warning Statement TN IT...

Страница 79: ...Cet quipement est lourd et doit tre d plac avec un syst me de levage m canique pour viter les blessures Danger d lectrocution Lorsque le module de ventilation est retir les broches d alimentation son...

Страница 80: ...bles phase neutre D branchez tous les cordons d alimenta tion avant d ouvrir le capot ou de toucher tout l ment l int rieur Risque et danger d lectrocution Les alimentations sont toutes ind pendantes...

Страница 81: ...nal Electrical Code et du Code canadien de l lectricit Avertissement ne remplacer qu avec une batterie UL certifi e pour accepter un cou rant de charge anormal maximal sup rieur ou gal 4 mA Si la batt...

Страница 82: ...ensit s le c blage de l immeuble doit int grer un dispositif certifi de protection contre les surintensit s calibr 20 A et ais ment accessible Attention un quipement coulissant ou mont sur rail ne doi...

Страница 83: ...m Bereich mit einer Umgebungstemperatur ber der maximal empfohlenen Temperatur von 45 C 113 F betrieben werden Es ist ein Luft strom von 200 LFM bei maximaler Umgebungstemperatur erforderlich Au erdem...

Страница 84: ...rkabel sind schwer und nicht flexible Deshalb m ssen sie vorsichtig an die Anschl sse angebracht bzw davon getrennt werden Lesen Sie die speziellen Warnun gen und Anleitungen des Kabelherstellers Wenn...

Страница 85: ...er bewertet bei 125 V 15 mit einer Mindestl nge von 1 5 m Six Feet aber nicht mehr als 4 5 m F r die europ ischen Zusammenhang w hlen Sie ein Netzkabel das international harmonisiert und der Aufschrif...

Страница 86: ...ltigen Stan dort gedacht nicht f r Instandhaltung und Wartung Gem WEEE Directive 2002 96 EC m ssen alle elektrischen und elektronischen Abfallger te EEE separat gesammelt und nichit mit normalem Haush...

Страница 87: ...r como m nimo un espacio de 8 cm 3 pulgadas alrededor de las aberturas de ventilaci n Los chasis no se deben apilar sobre otros equipos La ca da del chasis podr a causar lesiones corporales as como da...

Страница 88: ...zando desde abajo hacia arriba La instalaci n el reemplazo y el mantenimiento de este equipo estar n a cargo nica mente de personal capacitado y competente La eliminaci n definitiva de este equipo se...

Страница 89: ...ciente de los c digos el ctricos nacionales del pa s en cuesti n En Am rica del Norte el equipo se debe instalar de acuerdo con las disposiciones vigentes del C digo El ctrico Nacional de los EE UU y...

Страница 90: ...Mellanox Technologies 90 E 8 Rus sian 1 2 3 4 5 6 45 C 113 F 8 3 40 lbs 18 kgs 40 70 lbs 18 32 kgs 70 121 lbs 32 55 kgs 121 lbs 55 kgs...

Страница 91: ...Rev 1 2 Mellanox Technologies 91 7 8 9 10 11 12 13...

Страница 92: ...Mellanox Technologies 92 14 15 16 17 18 UL CSA 19 UL 4 UL CSA 3 16 AWG 1 5 6 4 5 125 13 HAR 3 1 0 300 250 10...

Страница 93: ...nologies 93 20 21 22 23 WEEE E 9 Avertismente privind siguran a la instalare Romanian 1 Instruc iuni de instalare RS232 Ethernet DP 1 DP 2 UL 20 2002 96 EC WEEE Citi i toate instruc iunile de instalar...

Страница 94: ...trumente sau p r i din corp n cavitatea modulului ventilator Acest echipament nu trebuie s fie ac ionat ntr o zon unde temperatura ambiant dep e te valoarea maxim recomandat 45 C 113 F n plus pentru a...

Страница 95: ...energie pentru a asigura decuplarea n inter iorul platformei de comutare n timpul perioadelor cu desc rc ri electrice luminoase nu lucra i cu echipamentul sau nu conecta i sau deconecta i cablurile Ca...

Страница 96: ...mitate cu instruc iunile Pentru conectarea la o surs de alimentare pentru America de Nord selecta i un cordon de alimentare care este nregistrat UL i certificat CSA cu 3 conductoare 16 AWG terminat cu...

Страница 97: ...trebuie s fie integrat n cablajul cl dirii Aten ie Echipamentul montat pe o linie de alunecare in nu va fi utilizat ca raft sau spa iu de lucru Scopul inelor nu este de a glisa unitatea de pe rack Ac...

Страница 98: ...t ili dijelove tijela u otvor modula ventilatora Ovom se opremom ne bi trebalo rukovati u podru jima s temperaturom okoline koja prema uje najvi e preporu ene vrijednosti 45 C 113 F Osim toga kako bi...

Страница 99: ...a kako biste osigurali stanje bez napajanja unutar platforme preklopnika Tijekom djelovanja munja nemojte raditi na opremi ili spajati ili odspajati kabele Bakreni kabeli su te ki i nesavitljivi i kao...

Страница 100: ...baterija zamijeni neodgovaraju om vrstom Odlo ite prazne baterije sukladno uputama Za sjevernoameri ku mre u odaberite kabel napajanja koji je na UL listi i sa CSA certifikatom 3 ilni 16 AWG 16 AWG ko...

Страница 101: ...ugraditi u o i enje zgrade Pozor Oprema montirana na kliza e vodilice ne bi se trebala koristiti kao polica ili radna povr ina Vodilice nisu namijenjene za povla enje ure aja iz ormari a Slu e samo za...

Страница 102: ...erire strumenti o parti del corpo nella cavit del modulo della ventola Questa apparecchiatura non va utilizzata in un area con una temperatura ambiente superiore a quella massima consigliata 45 C 113...

Страница 103: ...mmutatore non sia sotto tensione Durante i temporali non effettuare interventi sull apparecchiatura e non collegare o scollegare i cavi I cavi di rame sono pesanti e non flessibili Di conseguenza vann...

Страница 104: ...chio di esplosione Smaltire le batterie usate in conformit con le istruzioni Per una connessione di alimentazione nordamericana selezionare un cavo di alimentazione di tipo UL e munito di certificazio...

Страница 105: ...za nominale pari a 20 Attenzione un apparecchiatura scorrevole o montata su binari non va utilizzata come scaffale o piano di lavoro I binari non sono progettati per far scorrere e allontanare l unit...

Страница 106: ...va ak sa lamak i in havaland rma deliklerinin etraf nda en az 8 cm 3 in a kl k b rak lmal d r Bu ekipman nerilen maksimum ortam s cakl n a an alanlarda al t r lmamal d r 45 C 113 F Ayr ca d zg n hava...

Страница 107: ...Anahtar platformundaki g c kapatmak i in t m g kaynaklar n n ba lant lar n kesin G ky z nde im ek akt zamanlarda ekipman zerinde al may n veya kablo ba lamay n ya da kablo ba lant s kesmeyin Bu r n bi...

Страница 108: ...uzun olmayan bir kablo Avrupa da g ba lant s i in uluslararas uyumlu ve HAR i aretli 3 iletken en az 1 0 mm2 tel 300 V de erinde ve PVC yal t ml bir g kayna kablosu se in Kablonun 250 V 10 A de erinde...

Страница 109: ...WEEE Y nergesi 2002 96 EC uyar nca t m elektrikli ve elektronik ekipman at klar EEE ayr olarak toplanmal ve evsel at klarla birlikte pe at lmamal d r Bu r n ve t m par alar evreye dost ve sorumlu bir...

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