【正文】 CISCO Catalyst 2950 系列工作組交換機Catalyst 2950系列交換機屬于快速以太網(wǎng)桌面交換機CISCO Catalyst 2900系列，可以為局域網(wǎng)（LAN）提供極佳的性能和功能。l 可選的冗余外部電源。l 服務質(zhì)量（QoS）：帶有加權輪詢（WRR）調(diào)度的多個陣列。l 24Gb/s無阻塞交換矩陣。其特性有；l 48個專用10/100Mb/s以太網(wǎng)端口，以及兩個支持千兆位接口轉換器（CBIC）的1000BaseX千兆位以太網(wǎng)端口，所有端口都擁有第三層交換功能。Catalyst 2948GL3交換機不僅為IP、IPX及IP組播提供無阻塞路由和交換，同時也為不可路由的協(xié)議提供線速第二層交換，例如NetBIOS和DECnet 局域傳輸（LAT）。這種新的Catalyst 交換機為擁有適當端口密度的中型園區(qū)主干網(wǎng)提供所需的高度性能。缺點：成本高、應用面不廣。缺點：成本高，技術不成熟，還沒有制定標準；由于交換式以太網(wǎng)能滿足校園網(wǎng)應用需求，即高速的數(shù)據(jù)流轉輸如：多媒體教學、視頻點播、圖書資料查詢、科研高速網(wǎng)絡，而且成本低、技術成熟、升級性強，因此采用交換式以太網(wǎng)技術結合虛擬局域網(wǎng)技術和及網(wǎng)絡冗余技術，給校園網(wǎng)提供高速、可靠的一個網(wǎng)絡。第三層交換技術：一方面支持VLAN之間通信；另一方面交換技術減少了數(shù)據(jù)包的碰撞問題。：由于以太網(wǎng)的技術成熟、成本較低、互操作性強、易于使用和管理、可擴充性強，因此，選用以太網(wǎng)技術。名字的定義如下：l 電腦室1：JF1l 電腦室2：JF2l 電腦室3：JF3l 電腦室4：JF4l 電腦室5：JF5l 電腦室6：JF6l 電腦室7：JF7l 電腦室8：JF8l 辦公室：BGSl 教學樓：JXL1l 教學樓：JXL2l 教學樓：JXL3l 宿舍樓：SSL 中心交換機2948GL3的配置 Switchen Switchconfig t Switch(config)Hostname Cisco3L2948 Cisco3L2948(config) enable password hnjc Cisco3L2948(config) enable secret hnjc1 Cisco3L2948(config) end Cisco3L2948 (config) line console 0 Cisco3L2948(configline) password Cisco3L2948 Cisco3L2948(configline) login Cisco3L2948(configline)line vty 0 4 Cisco3L2948(configline)password cisco2948 Cisco3L2948(configline)login Cisco3L2948(configline)end Cisco3L2948：SwitchenSwitchconfig t Switch(config)Hostname Cisco3L2948 Cisco3L2948(config)exit Cisco3L2948 vlan databaseCisco3L2948 (vlan)vtp mode serverCisco3L2948 (vlan)vtp domain certral1Cisco3L2948 (vlan)vlan 2 name JF1Cisco3L2948 (vlan)vlan 3 name JF2Cisco3L2948 (vlan)vlan 4 name JF3Cisco3L2948 (vlan)vlan 5 name JF4Cisco3L2948 (vlan)vlan 6 name JF5Cisco3L2948 (vlan)vlan 7 name JF6Cisco3L2948 (vlan)vlan 8 name JF7Cisco3L2948 (vlan)vlan 9 name JF8Cisco3L2948 (vlan)vlan 10 name BGSCisco3L2948 (vlan)vlan 11name JXL1Cisco3L2948 (vlan)vlan 12name JXL2Cisco3L2948 (vlan)vlan 13 name JXL3Cisco3L2948 (vlan)vlan 14 name SSL1Cisco3L2948 (vlan)vlan 15 name SSL2Cisco3L2948 (vlan)vlan 16 name SSL3Cisco3L2948 (vlan)vlan 17 name SSL4Cisco3L2948 (vlan)vlan 18 name SSL5Cisco3L2948 (vlan)vlan 19 name SSL6Cisco3L2948 (vlan)applyApply pleted.Cisco3L2948 (vlan)exitCisco3L2948創(chuàng)建VLAN的IP地址并激活VLAN的設置：VLAN 1 IP地址Cisco3L2948config tCisco3L2948 (config)interface vlan 1Cisco3L2948(configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 2 IP地址Cisco3L2948config tCisco3L2948(config)interface vlan 2Cisco3L2948(configif) ip address Cisco3L2948(configif)no shutdownCisco3L2948(configif)exitVLAN 3 IP地址Cisco3L2948config tCisco3L2948 (config)interface vlan 3Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 4 IP地址Cisco3L2948config tCisco3L2948(config)interface vlan 4Cisco3L2948(configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 5 IP 地址Cisco3L2948config tCisco3L2948(config)interface vlan 5Cisco3L2948(configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLNA 6 IP地址Cisco3L2948config tCisco3L2948 (config)interface vlan 6Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948(configif)exitVLAN 7 IP地址Cisco3L2948config tCisco3L2948 (config)interface vlan 7Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 8 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 8Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 9 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 9Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 10 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 10Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 11 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 11Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 12 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 12Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 13 IP地址Cisco3L2948 Cisco2948config tCisco3L2948 (config)interface vlan 13Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 14 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 14Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 15 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 15Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 16 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 16Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 17 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 17Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 18 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 18Cisco3L2948 (configif) ip address Cisco3L2948 (configif)no shutdownCisco3L2948 (configif)exitVLAN 19 IP地址Cisco3L2948 config tCisco3L2948 (config)interface vlan 19Cisco3L2948 (configif) ip address Cisco3L