某单位在构建网络时,最初使用了一台3Com SuperStack ⅡSwitch 1100作为主交换机和一台Cisco 2509广域网路由器。在第二次网络建设时,根据有限的预算添置了2台Cisco Catalyst 1924交换机和一台Cisco 3640路由器用于与各地分支机构的广域网互连。该单位希望可以充分利用这些的网络设备按部门划分虚拟局域网(VLAN),以便更好地进行网络安全管理。 When building a network, a unit initially used a 3Com SuperStack II Switch 1100 as the main switch and a Cisco 2509 WAN router. At the second network build, two Cisco Catalyst 1924 switches and one Cisco 3640 router were added to a limited budget for WAN interworking with branch offices around the world. The unit hopes to make full use of these network devices by departmental virtual LAN (VLAN), in order to better network security management.