all-optical switch with double switched ports based on semiconductor optical amplifier 基于半导体光放大器的双端口全光光开关
the network engineer uses a portable integrated analyzer to drill into the switch and view the activity on each switch port 网络工程师使用便携式集成分析仪深入交换机观察每一个交换机端口上的活动情况。
layer 2 switches can improve performance by dividing lans into smaller segments and by providing dedicated connections between workstations and switch ports for high-power users 第二层交换机通过把局域网分成小段并为实力强大的用户提供工作站与交换机端口之间的专用连接而提高了性能。
you can connect an ethernet hub into a switch port and then connect multiple ethernet hosts into the hub, but you can't mix token ring hosts in with the ethernet gang on the same segment 这段话好像是说不能在同一个借口上连接不同的网络类型,那交换机能不能在一个接口连接以太网,在另外一个接口连接令牌环?
the other one is pppoe ( point-to-point protocol over ethernet ), which is fit for adsl ( asymmetric digital subscriber line ) users . we succeeded in the control of the switch ports and the traffic accounting under dhcp mode, and in the user's authentication, authorization and accounting under pppoe mode 本文给出了在宽带网上采用radius(远程拨号用户认证服务)协议结合pppoe(以太网上的点对点协议)实现用户鉴别、授权和计费管理的解决方案和实现方法。