H3C S3600-28PSI System Description

Also see for S3600-28FEI: Datasheet Operation manual Operation manual

H3C S3600-28PSI System Description Manual pdf 72 page image

System DescriptionH3C S3600 Series Ethernet Switches Chapter 3 Software Features3-13dynamically delivers the profile to the user access port, thus providing a set ofpre-defined service quality guarantees for the user.Currently, the QoS profile feature on the switch can provide the following functions:packet filtering, traffic monitoring, and priority tagging.3.7 web cache redirectionThe hypertext transfer protocol (HTTP) is one of the most commonly used methods toaccess the Internet. web cache redirection is provided to reduce the load on WAN linksand to increase the speed, as shown in Figure 3-2:InternetSwitchPCInternetWeb CacheInternetSwitchPCInternetWeb CacheFigure 3-2 web cache redirectionIn the diagram, the PC is a user on a LAN attached to the switch. The Web Cache is aserver that stores the frequently visited internet websites of the WAN users. Once webcache redirection is enabled, the HTTP traffic that the user sends to the Internet isredirected to the Web Cache. If the Web Cache has the contents that the user needs, itreturns the content directly to the user and the user does not need to actually log ontothe Internet; if it does not have the contents, then the user needs to get the informationfrom the Internet.3.8 NTPClock synchronization among devices is important for a complex network. The networktime protocol (NTP) is a TCP/IP protocol that releases accurate time on a network.NTP provides consistency guarantee for the following applications: When increment backup is performed between a backup server and a client, itensures the clock between the two system be synchronous.