"Requested_prod_id","Requested_GTIN(EAN/UPC)","Requested_Icecat_id","ErrorMessage","Supplier","Prod_id","Icecat_id","GTIN(EAN/UPC)","Category","CatId","ProductFamily","ProductSeries","Model","Updated","Quality","On_Market","Product_Views","HighPic","HighPic Resolution","LowPic","Pic500x500","ThumbPic","Folder_PDF","Folder_Manual_PDF","ProductTitle","ShortDesc","ShortSummaryDescription","LongSummaryDescription","LongDesc","ProductGallery","ProductGallery Resolution","ProductGallery ExpirationDate","360","EU Energy Label","EU Product Fiche","PDF","Video/mp4","Other Multimedia","ProductMultimediaObject ExpirationDate","ReasonsToBuy","Bullet Points","Spec 1","Spec 2","Spec 3","Spec 4","Spec 5","Spec 6","Spec 7","Spec 8","Spec 9","Spec 10","Spec 11","Spec 12","Spec 13","Spec 14","Spec 15","Spec 16","Spec 17","Spec 18","Spec 19","Spec 20","Spec 21","Spec 22","Spec 23","Spec 24","Spec 25","Spec 26","Spec 27","Spec 28","Spec 29","Spec 30","Spec 31","Spec 32","Spec 33","Spec 34","Spec 35","Spec 36","Spec 37","Spec 38","Spec 39","Spec 40","Spec 41","Spec 42","Spec 43","Spec 44","Spec 45","Spec 46","Spec 47","Spec 48","Spec 49","Spec 50","Spec 51","Spec 52","Spec 53","Spec 54","Spec 55","Spec 56","Spec 57","Spec 58","Spec 59" "","","21494236","","HP","J9727A#ABA?LA","21494236","","网络交换机","258","","","2920-24G-POE+","20210714111121","ICECAT","","77758","https://images.icecat.biz/img/norm/high/17492131-725.jpg","474x356","https://images.icecat.biz/img/norm/low/17492131-725.jpg","https://images.icecat.biz/img/gallery_mediums/img_17492131_medium_1482150835_3902_19303.jpg","https://images.icecat.biz/thumbs/17492131.jpg","","","惠普 2920-24G-POE+ 托管 L3 Gigabit Ethernet (10/100/1000) 支持以太网（PoE） 1U 灰色","HP 2920-24G-POE+ Switch","惠普 2920-24G-POE+, 托管, L3, Gigabit Ethernet (10/100/1000), 支持以太网（PoE）, 机架安装, 1U","惠普 2920-24G-POE+. 开关类型: 托管, 交换层: L3. 基本交换 RJ-45 以太网端口类型: Gigabit Ethernet (10/100/1000), 基本交换 RJ-45 以太网端口数量: 24. 全双工传输. MAC 地址表: 16000 登录, 交换容量: 128 Gbit/秒. 网络标准: IEEE 802.3, IEEE 802.3ab, IEEE 802.3at, IEEE 802.3u. 支持以太网（PoE）. 机架安装, 外型: 1U","HP 2920 交换机系列包括五款交换机：具备 24 个 10/100/1000 端口的 HP 2920-24G 和 2920-24G-PoE+ 交换机，以及具备 48 个 10/100/1000 端口的 HP 2920-48G、2920-48G-PoE+ 和 2920-48G 740W PoE+ 交换机。每种交换机有 4 个双功能端口，用于 10/100/1000 或 SFP 连接。此外，2920 交换机系列最多支持 4 个可选的 10 千兆以太网（SFP+ 和/或 10GBASE-T）端口，以及一个双端口堆叠模块。这些选项可以为您提供灵活且易于部署的上行链路和堆叠。同时提供静态和 RIP 路由、强大的安全和管理功能、企业级功能、终身免费保修及免费软件更新，这一切使 HP 2920 交换机系列成为一款经济实用的可扩展解决方案，非常适合正在构建高性能网络的客户。这些交换机可以部署在企业边缘、远程分支机构和融合网络中。

服务质量 (QoS)
\n• 流量优先级 (IEEE 802.1p)：可将流量实时分为 8 个优先级，映射为 8 个队列

\n连接性
\n• 灵活的 10 Gbps 以太网连接性：最多四个可选 10 Gb 端口（SFP+ 和/或 10GBASE-T）

\n性能
\n• 节能设计：高效电源：经过 80 PLUS Silver 认证的电源提升节能效果。高能效以太网 (EEE) 支持：根据 IEEE 802.3az，可减少能耗。

\n软件定义的网络
\n• OpenFlow：是一项通过允许隔离数据（数据包转发）和控制（路由决策）路径实现软件定义网络的重要技术

\n收敛
\n• IP 组播侦听和数据驱动型 IGMP：自动防止 IP 组播流量的泛滥

\n灵活性和高可用性
\n• IEEE 802.1s 多生成树：允许使用多生成树，在多个 VLAN 环境中实现高链路可用性；为 IEEE 802.1d 和 IEEE 802.1w 提供传统支持

\n管理
\n• SNMPv1、v2 和 v3：提供全面的 SNMP 支持；全面支持行业标准管理信息库 (MIB)，以及专用扩展； SNMPv3 通过加密来提高安全性\n","https://images.icecat.biz/img/norm/high/17492131-725.jpg|https://images.icecat.biz/img/gallery/img_21494236_high_1472603881_3063_26430.jpg","474x356|474x356","|","","","","","","","","","","管理功能","开关类型: 托管","交换层: L3","支持服务质量（QoS）: 是","网上管理: 是","端口 & 界面","基本交换 RJ-45 以太网端口数量: 24","基本交换 RJ-45 以太网端口类型: Gigabit Ethernet (10/100/1000)","Combo SFP 端口数量: 4","联网","网络标准: IEEE 802.3, IEEE 802.3ab, IEEE 802.3at, IEEE 802.3u","全双工传输: 是","路由条目: 2048","流量控制支持: 是","链路汇集: 是","速率限制: 是","自动 MDI / MDI - X 检测功能: 是","生成树协议: 是","自动检测: 是","VLAN支持: 是","数据传输","MAC 地址表: 16000 登录","交换容量: 128 Gbit/秒","吞吐量: 95.2 Mpps","延时（1 Gbps）: 3.3 微秒","程序包缓冲区内存: 11.25 MB","安全","DHCP 功能: DHCP server, DHCP client","存取控制清单(ACL): 是","IGMP侦听: 是","SSH / SSL支持: 是","组播功能","支持多重播放: 是","设计","机架安装: 是","可堆叠: 是","外型: 1U","产品色彩: 灰色","性能","内置处理器: 是","处理器: ARM11","处理器频率: 625 MHz","内存类型: SDRAM","内置存储器: 512 MB","闪存: 1024 MB","能量控制","交流电（AC）输入电压: 100 - 240 V","交流电（AC）输入频率: 50 - 60 Hz","功耗（一般操作）: 475 W","以太网电源（PoE）","支持以太网（PoE）: 是","以太网（PoE）供电总功率概算: 370 W","环境条件","散热: 358 BTU/小时","重量和尺寸","宽度: 442.5 mm","深度: 336 mm","高度: 44.5 mm","重量: 5.46 kg"