该供应商编写的技术底漆已经被网络世界编辑，以消除产品推广，但读者应该注意到它可能会倾向于提交者的做法。有个足球雷竞技app
In the gap between plug and play unmanaged Ethernet switches and fully managed enterprise switches, vendors added the so called “smart switch,” which offer light management features to unmanaged gigabit Ethernet devices. Today, smart switches targeted at small-to-medium-size business run the gamut in terms of manageability and feature sets.
The appeal of basic network management features for a small business stems from the need for performance and security. Plug and play and start right away—that’s what every start up wants—then later on, they need basic configurations and features to accommodate growth as needed.
智能交换机提供基本的QoS功能：通过优先级的流量，并分割网络端点到几个VLAN时，可在第一轮扩张的帮助。智能开关与拥有成本帮助为好，以经由图形用户界面（GUI）和硬件的价格远低于企业LAN设备上的网络基础设施的控制。这可能是成本意识较强的组织有价值尚未准备聘请一个专职的网络工程师。
Smart evolution
Over the past few years, the smart switch segment has undergone an arms race with vendors piling on robust features. Whereas once smart switches resembled their unmanaged kin, they’ve since grown up to look more like the managed side of the family.
“Smart switches have definitely grown up into the higher level capabilities,” says Brian Fulmer, a central California IT manager experienced enough to have Novell NetWare on his resume. “The management side of things has changed from the individual device level to the network level; the other big change has been the actual hardware features and capabilities versus the nominal sophistication of the operating system of the switches, and how you touch that.”
If you need to troubleshoot the LAN, a smart switch looks way beyond the ‘unplug-yell-replace’ repair method intrinsic to unmanaged switches. With a smart switch you get port mirroring to view and investigate packet size and throughput, and it can be configured for standard Remote Monitoring (RMON) performance reporting. Broadcast storm event logging are commonplace in smart switches as well.
在今天的智能交换机在2层控制的粒度级别可能会惊讶老将网络专业人员。QoS和流量优先级，链路聚合LACP协议，快速生成树配置和多达三位生成树实例VLAN子网 - 一个智能开关会为你做的。“智能交换机提供越来越多的速度和更小的业务网络更大的能力;一些厂商甚至提供可堆叠交换机允许你管理多台交换机作为一个单元，”确认帕吉特，新蛋的商业网络领域的工程师。“没有必要去为一个千兆业务网络管理型交换机了。”
Drawing the line of between smart and managed
Padgett agrees, however, that as much as smart switches have evolved, we should probably draw the line at Layer 3 of the OSI model for anything less than a managed switch. This might offend a few marketers who go as far as introducing new sub-levels of the OSI to describe how close smart switch can get to a full-on router with the packet handling.
“买交换机可以极其frustrating, because claiming an 802.x standard (or others) on a list of features does not mean a full implementation of that standard,” Fulmer, the veteran IT manager, points out. “That's nothing new in technology; the nice thing about standards is there are so many of them—caveat emptor.” Your mileage will vary when it comes to advanced smart switch capabilities from a cross-vendor standpoint. You have to get pretty deep into the cut sheets to ferret out some of the differences.
网络制造商提供的子网管型交换机智能管理的不同层次。命名约定跨越这造成混乱厂商不一致，但在一般情况下，网络工程师应该明确划分界线清楚，如果你深入研究分组管理功能。
Application level QoS and security
控制发送排序是元素的定义QoS能力的交通处理功能。电流生成智能开关willprioritize分组通过数据在DSCP字段中的IP报头，或在VLAN标签VLAN优先级字段横跨OSI第3层拉伸，进行分类的数据包的路由。智能交换机的配置将优先带宽为VoIP端点在计算机终端的数据包语音包，例如。与此相反，完全管理企业交换机使用流分类进行分类的数据包以更精细的水平，下至应用层（OSI第4层）。在具有子网访问在数据中心托管多个应用程序的网络，管理交换机配置优先级数据包流量，使用更加延迟敏感的应用的端点。
Additionally, a fully managed switch can be configured to recalculate the checksum in the Time to Live (TTL) IPv4 header of the routed packet for each “hop” between networked devices. This makes sure that packets are not prematurely dropped in complex networks, and allows network architects more freedom to add network segmentation and enhance security.
如果您的网络包括集中式，本地托管的应用服务器和数据库和端点上的各种子网，它是常见的做法，有中央管理的交换机指挥交通了智能交换机，把手包子网端点。“核心在同一个房间交换机作为服务器需要充分的管理和CLI配置，句号，”建议富尔默。“即使百用户网络有足够的复杂性，真正的管理型交换机的可视性和可配置性是要还清。”
“除了核心，智能开关做出很大的意义成本的原因，”富尔默补充道。“如果你没有服务器，因为你的基础设施和服务都是基于云的，这是更为常见，现在甚至比几年前的，那么你可以跳过管理型交换机，做你的网络服务，DNS，DHCP，路由，在你的路由器/防火墙/ UTM，与局域网连接的智能交换机来处理。这是从广义上讲，很明显“。
管理的核心，智能外围
受管理的核心/智能边缘是建立该企业的系统工程师丹尼斯·迪亚兹工作与ABC电视演播室洛杉矶。“其中一些超贵网管型交换机有相当丰厚的GUI，但大多数工程师使用的CLI设置的配置和使用的是几乎完全，”迪亚兹说。“我们很习惯了CLI，它只是更快的方式。”
不是每一个工程师的工作原理与相同的方法，但是当要求画智能交换机和管理交换机之间的线，最终将其环绕回同样的问题。你想干什么你的网络做?
This strikes at the golden rule of IT purchasing: buy for your needs rather than the features. The larger a network gets, the more useful the flexibility of managed switch becomes. For Diaz at ABC-TV, a GUI comes in handy for making small, usually temporary changes in the network. “I’ll use the smart switch GUI for simple VLAN tagging as needed on a subnet, or I’ll use the CLI to set up the bulk of the network rules and make small tweaks to with the GUI.” The graphical interface has its place.
一切又回到了需求。每个业务网络是唯一的，但大型网络和其较小的同行之间的共同点是性能和安全性。要满足这些需求的最佳方式，在大规模变化。明智的IT经理们一年或两年提前到具备相应的设备和人员到位预测的增长和网络扩展，一个事实，即智能交换机与管理型交换机发挥很好，甚至跨越供货商生产线，是一个巨大的加启动智能和成长那里。
卡勒负责全球战略，执行和P＆L这一新兴业务部门，开发网络产品为小型和中型的企业，宽带服务提供商和政府渠道。