【正文】 768 (EX 8216)64 (EX 8208)。 性能參數(shù)　EX 820048TEX 820048FEX 82008XS端口數(shù)量48488端口類型RJ45SFPSFP+端口速度10/100/1000 Mbps100/1000 Mbps10 Gbps每系統(tǒng)最多支持的端口數(shù)384 (EX 8208)。EX 82008XS適用于園區(qū)或數(shù)據(jù)中心上行鏈路匯聚以及核心和骨干互連等企業(yè)級應(yīng)用，還能用于電信運營商在城域網(wǎng)絡(luò)、互聯(lián)網(wǎng)交換點及營運網(wǎng)點(POP)中建立高密度的線速萬兆以太網(wǎng)互連。EX 820048F為高性能的大型企業(yè)和電信運營商分布式的應(yīng)用而設(shè)計，最多可在一個EX 8208機箱中支持384個線速端口，而在一個EX 8216機箱中則支持768個端口。如果使用EX 820048T線卡，最多能在一個EX 8208機箱中支持384個線速端口，或者在EX 8216機箱中支持768個端口?？蛻艨梢詮囊韵聝蓚€VCCI模塊中選擇一個： 4 x 10/100/100BASET RJ45（已在XRE200基本配置中包括） 4 x 1000BASEX GbE SFP（可以選擇用于升級，將集群交換配置延長到40公里）*?兩個冗余的熱交換電源(250W AC)?兩個冗余的熱交換風(fēng)扇 線卡EX 820048T：EX 820048T以太網(wǎng)線卡提供48個10/100/1000BASET端口，使用RJ45銅線連接器。利用集群交換控制協(xié)議(VCCP)，EX8200和XRE200能夠相互交換集群交換的狀態(tài)信息。3) 不中斷業(yè)務(wù)升級所有在EX8200集群交換系統(tǒng)上運行的瞻博網(wǎng)絡(luò)Junos OS控制平面協(xié)議，、OSPF、互聯(lián)網(wǎng)群組管理協(xié)議(IGMP)、物理接口模塊(PIM)、BGP等，與運行在獨立的EX8200上的協(xié)議是一樣的。這些加權(quán)隨機早期檢測(WRED)虛擬輸出隊列（EX 8216最多支持8,192個隊列）能夠防止同一個線卡的不同端口之間出現(xiàn)線頭阻塞（headofline blocking），確保系統(tǒng)中所有的萬兆以太網(wǎng)端口之間的流量完全的獨立。EXPFE2的交換矩陣接口ASIC負責(zé)在入口和出口管理大規(guī)模的緩沖區(qū)，以防止擁塞并為流量合理分配優(yōu)先級。性能與4200相同 可選模塊類型型號描述GLPBase SystemsEX450040FBFEX 4500, 40port 10G SFP+, 1200W AC PS, back to front airflow (optics sold separately)$32,000 Base SystemsEX450040FBFCEX 4500, 40port 10G SFP+ Converged Switch, 1200W AC PS, back to front airflow (optics sold separately)$32,000 Base SystemsEX450040FFBEX 4500, 40port 10G SFP+, 1200W AC PS, front to back airflow (optics sold separately)$32,000 Base SystemsEX450040FFBCEX 4500, 40port 10G SFP+ Converged Switch, 1200W AC PS, front to back airflow (optics sold separately)$32,000 SparesEX45004PSTRMK 4post Rack Mount Kit for EX4500$600 SparesEX4500FANTRAYBFEX4500 fantray – back to front airflow (spare)$750 SparesEX4500FANTRAYFBEX4500 fantray front to back airflow (spare)$750 SparesEX4500LBEX4500 Intraconnect module (spare)$2,000 SparesEX4500PWRBLNKBlank for EX4500 PS module (spare)$50 SparesEX4500UMBLNKBlank for EX4500 UM module (spare)$50 SparesREUSB1GSUSB media upgrade/spare for RE$300 Power SuppliesEX4500PWR1ACBFEX4500 1200W AC power supply – back to front airflow (power cord needs to be ordered separately)$1,500 Power SuppliesEX4500PWR1ACFBEX4500 1200W AC power supply front to back airflow (power cord needs to be ordered separately)$1,500 Uplink ModulesEX4500UM4XSFPEX 4500 4Port 10G SFP+ Uplink Module (optics sold separately)$4,000 OpticsEXSFP10GEDAC1MSFP+ 10 Gigabit Ethernet Direct Attach Copper (twinax copper cable) 1m $150 OpticsEXSFP10GEDAC3MSFP+ 10 Gigabit Ethernet Direct Attach Copper (twinax copper cable) 3m$210 OpticsEXSFP10GEDAC7MSFP+ 10 Gigabit Ethernet Direct Attach Copper (twinax copper cable) 7m $300 OpticsEXSFP10GELRSFP+ 10GBaseLR 10 Gigabit Ethernet Optics, 1310nm for 10km transmission on SMF$4,000 OpticsEXSFP10GELRMSFP+ 10 Gigabit Ethernet LRM Optics, 1310nm for 220m transmission on MMF$1,750 OpticsEXSFP10GESRSFP+ 10GBaseSR 10 Gigabit Ethernet Optics, 850nm for up to 300m transmission on MMF$1,500 OpticsEXSFP10GEUSRSFP+ 10 Gigabit Ethernet Ultra Short Reach Optics, 850 nm for 10m on OM1, 20m on OM2, 100m on OM3 multimode fiber$750 OpticsEXSFP1GELXSFP 1000BaseLX Gigabit Ethernet Optics, 1310nm for 10km transmission on SMF$1,000 OpticsEXSFP1GELX40KSFP 1000BaseLX Gigabit Ethernet Optics, 1310nm for 40 km transmission on SMF$2,500 OpticsEXSFP1GESXSFP 1000BaseSX Gigabit Ethernet Optics, 850nm for upto 550m transmission on MMF$500 OpticsEXSFP1GETSFP 1000BaseT 10/100/1000 Copper Transceiver Module for up to 100m transmission on Cat5$400 Power CablesCBLEXPWRC19CHAC Power Cable China (16A/250V, )$50 show機型編號說明基本單元描述EX450040FFB 40端口千/萬兆SFP/SFP+機箱 前進后向氣流（光接口另行發(fā)售）EX450040FBF40端口千/萬兆SFP/SFP+機箱 后進前向氣流（光接口另行發(fā)售）附件EX4500PWR1ACFBEX4500 1200W（110V時為1000W）交流電源模塊 前進后向氣流EX4500PWR1ACBFEX4500 1200W（110V時為1000W）交流電源模塊–后進前向氣流EX4500UM4XSFP EX4500 4端口萬兆SFP+上行模塊（光接口另行發(fā)售）可插拔光模塊EXSFP1GETSFP 10/100/1000BASET銅纜；RJ45連接器；非屏蔽雙絞線(UTP)傳輸距離100米EXSFP1GELXSFP 1000BASELX；LC連接器；1310nm；單模光纖傳輸距離10公里EXSFP10GESRSFP+ 10GBASESR；LC連接器；850nm；50微米多模光纖傳輸距離300米；EXSFP10GELRSFP+ 10GBASELR；LC連接器；1310nm；單模光纖傳輸距離10公里EXSFP10GEDAC1MSFP+萬兆以太網(wǎng)直接附加銅纜（twinax銅纜）1米EXSFP10GEDAC3MSFP+萬兆以太網(wǎng)直接附加銅纜（twinax銅纜）3米EXSFP10GEDAC7MSFP+萬兆以太網(wǎng)直接附加銅纜（twinax銅纜）7米EXSFP10GEUSRSFP+萬兆以太網(wǎng)超短距；850 nm；多模光纖OM1傳輸距離10米，多模光纖OM2傳輸距離20米，多模光纖OM3傳輸距離100米 ex 8200 FPE2每個EX 8200以太網(wǎng)線卡都配備了本地數(shù)據(jù)包轉(zhuǎn)發(fā)引擎— EXPFE2，每個PFE提供2組專為具體應(yīng)用而構(gòu)建的集成電路(ASIC)，一組負責(zé)線速處理數(shù)據(jù)包，另一組負責(zé)內(nèi)部深層數(shù)據(jù)包排隊和緩沖，同時提供高速接口來連接機箱交換矩陣。EX 420024FDC24端口100BaseFX/1000BASEX SFP+ 190 W DC PSU，包括 50cm集群交換電纜。EX 420024TDC24端口10/100/1000BaseT+ 190 W DC PSU，包括 50cm 集群交換電纜。EX 420048P48端口10/100/1000BaseT PoE + 930 W AC PSU，包括 50cm 集群交換端口電纜。EX 420024P24端口10/100/1000BaseT PoE + 600W AC PSU，包括 50cm 集群交換端口電纜。transmission on SMF$1,000 OpticsEXSFP1GELHSFP 1000BaseLH Gigabit Ethernet Optics, 1550nm for 70km transmission on SMF$6,000 OpticsEXSFP1GELXSFP 1000BaseLX Gigabit Ethernet Optics, 1310nm for 10km transmission on SMF$1,000 OpticsEXSFP1GELX40KSFP 1000BaseLX Gigabit Ethernet Optics, 1310nm for 40 km transmission on SMF$2,500 OpticsEXSFP1GESXSFP 1000BaseSX Gigabit Ethernet Optics, 850nm for upto 550m transmission on MMF$500 OpticsEXSFP1GETSFP 1000BaseT 10/100/1000 Copper Transceiver Module for up to 100m transmission on Cat5$400 OpticsEXSFPFE20KT13R15SFP 100BaseBX Fast Ethernet Optics, Tx 1310nm/Rx 1550nm for 20km transmission on single strand of SMF$550 OpticsEXSFPFE20KT15R13SFP 100BaseBX Fast Ethernet Optics, Tx 1550nm/Rx 1310nm for 20km transmission on single strand of SMF$550 OpticsEXSFPGE10KT13R14SFP 1000BaseBX Gigabit Ethernet Optics, Tx 1310nm/R