2008年2月25日消息，Ethernet Direct推出JME－2408-L2+ Enterprise Workgroup 交換機(jī)，帶有24 10/100TX接口和2個(gè)吉比特銅/SEP接口用于外部靈活性。 JME-2408-L2+是一個(gè)高性能WEB管理型L2＋交換機(jī)，跟據(jù)不同的應(yīng)用，可與24 10/100TX以太網(wǎng)接口或是2 combo吉比特接口一起安裝，在用戶帶來(lái)更多的靈活性。此外，SFP纖維無(wú)線收發(fā)器支持熱的即插即用功能，在交換機(jī)處于工作狀態(tài)時(shí)，用戶可插入或移換SFP纖維收發(fā)器。 JME-2408-L2+為無(wú)扇設(shè)計(jì)，不僅可以減少功率損耗，還能最小化操作噪音。JME-2408-L2+擁有前端訪問(wèn)設(shè)計(jì)，允許用戶通過(guò)前端面板上的內(nèi)置液晶顯示器查看交換機(jī)狀態(tài)。管理者可在rack-mount環(huán)境中對(duì)其進(jìn)行檢查、故障檢修和維護(hù)。 JME-2408-L2+還擁有許多管理特點(diǎn)，包括基于端口/基于標(biāo)簽的VLAN，SNMP功能，RSTP（快速生成樹(shù)協(xié)議），MSTP（多生成樹(shù)）、IGMP、GVRP及更多協(xié)議。為了提高帶寬應(yīng)用，JME-2408-L2+支持高達(dá)7個(gè)樹(shù)干組，每一個(gè)樹(shù)干能夠調(diào)節(jié)以適應(yīng)4個(gè)會(huì)員端口。這些樹(shù)干端口提供交換機(jī)與交換機(jī)之間或是交換機(jī)與服務(wù)器間的帶寬。 JME-2408-L2+擁有很高的精確度，在JME-2408-L2+上可執(zhí)行Layer2+分類。有256個(gè)訪問(wèn)控制表規(guī)則可以被設(shè)定，使用戶可以過(guò)濾或是選擇一些用于安全管理或授權(quán)控制的數(shù)據(jù)包。管理者因此也可設(shè)置IP或MAC地址以防止未授權(quán)訪問(wèn)。為加強(qiáng)安全性，JME-2408-L2+支持在IEEE 802.1x上的三種鑒定，包括MD5,TLS和REAP。 關(guān)鍵特征如下： 1. 32 bit ARM9 CPU, 16MB SDRAM, 4Mb packet buffer 2. Non-blocking, full-line speed, store-and-forward operation 3. Support jumbo frame up to 9K byte in packet length 4. Auto-Negotiation and Auto-MDIX on all 10/100M or 10/100/1000M copper ports 5. 24 10/100 RJ-45 ports, and 2 pair Gigabit ports of RJ-45 and SFP 6. 8K+256 MAC entries, 4K VLAN entries and 1K multicast Entries 7. Support flow control on both half and full duplex operation 8. Support Head-of-Line blocking prevention 9. Support port-based VLAN and 802.1Q tag-based VLAN 10. Support IEEE 802.1x MD5, EAP, TLS 11. Support IP Multicast, IGMP snooping, GVRP 12. Support RSTP （ Rapid Spanning Tree Protocol, IEEE 802.1w ） 13. MSTP （ Multiple Spanning Tree, RSTP included ）, Spanning Tree protocol used for VLAN environment 14. Support 4-level priority queuing 15. Support Port-Trunking with flexible load balancing algorithm 16. Provide 7 trunk groups with up to 4 member ports within 24 ports 10/100M ports 17. Support ingress port security mode 18. Support port-based Egress and Ingress rate limit control 19. Support RMON group 1,2,3,9 20. Support SNMP V1/V2/V3 21. Support DHCP option 82 22. Support ACL （Access Control List） up to 256 rules 23. Support Port mirroring 24. Field-code-upgradeable 25. Support in-band control （any one of Ethernet ports） 26. Support high speed out-of-band control （115,200 baud rate） 27. LED display for each port status: link, activity and speed [FONT=times] original text [/FONT] [font=times][Color=#708090]Taipei, Taiwan, February 25, 2008 – Ethernet Direct released JME-2408-L2+ Enterprise Workgroup Switch with 24 10/100TX ports and 2 Gigabit copper/SFP ports for media flexibility. JME-2408-L2+ is a high-performance web managed layer 2+ switch. It is equipped with 24 10/100TX Ethernet ports and 2 combo Gigabit ports, giving users more flexibility in constructing gigabit backbone with either copper or fiber media for different applications. In addition, SFP fiber transceivers support hot pluggable function, enabling users to insert or swap SFP Fiber transceivers when the switch is powered on. JME-2408-L2+ has fanless design, which not only reduces the power consumption, but also minimizes operation noise. JME-2408-L2+ also has a front-access design, which allows users to see a switch’s status with the built-in LED on the front panel. It makes it easy for administrators to easily inspect, trouble-shoot, and maintain switches in a rack-mount environment. JME-2408-L2+ also has many management features, including port-based/tag-based VLAN, SNMP function, RSTP （Rapid Spanning Tree）, MSTP （Multiple Spanning Tree）, IGMP, GVRP, and more. To increase bandwidth application, JME-2408-L2+ supports up to 7 trunk groups, and each trunk can accommodate up to 4 member ports. These trunk ports provide aggregated bandwidth between switches or between the server and the switch. JME-2408-L2+ has strong security features as well. Layer2+ classification is implemented in JME-2408-L2+. There are up to 256 Access Control List rules can be configured, enabling users to filter or to select some packets for security management or authorized control. Administrators can therefore set up IP or MAC address to prevent unauthorized access. And to enhance security, JME-2408-L2+ support 3 kinds of Authentication on IEEE 802.1x, including MD5, TLS, and REAP. Key Features 1. 32 bit ARM9 CPU, 16MB SDRAM, 4Mb packet buffer 2. Non-blocking, full-line speed, store-and-forward operation 3. Support jumbo frame up to 9K byte in packet length 4. Auto-Negotiation and Auto-MDIX on all 10/100M or 10/100/1000M copper ports 5. 24 10/100 RJ-45 ports, and 2 pair Gigabit ports of RJ-45 and SFP 6. 8K+256 MAC entries, 4K VLAN entries and 1K multicast Entries 7. Support flow control on both half and full duplex operation 8. Support Head-of-Line blocking prevention 9. Support port-based VLAN and 802.1Q tag-based VLAN 10. Support IEEE 802.1x MD5, EAP, TLS 11. Support IP Multicast, IGMP snooping, GVRP 12. Support RSTP （ Rapid Spanning Tree Protocol, IEEE 802.1w ） 13. MSTP （ Multiple Spanning Tree, RSTP included ）, Spanning Tree protocol used for VLAN environment 14. Support 4-level priority queuing 15. Support Port-Trunking with flexible load balancing algorithm 16. Provide 7 trunk groups with up to 4 member ports within 24 ports 10/100M ports 17. Support ingress port security mode 18. Support port-based Egress and Ingress rate limit control 19. Support RMON group 1,2,3,9 20. Support SNMP V1/V2/V3 21. Support DHCP option 82 22. Support ACL （Access Control List） up to 256 rules 23. Support Port mirroring 24. Field-code-upgradeable 25. Support in-band control （any one of Ethernet ports） 26. Support high speed out-of-band control （115,200 baud rate） 27. LED display for each port status: link, activity and speed[/color][/font]