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1、思科3750交换机常用配置手册 思科3750交换机常用配置手册 目录 说明 (3) 产品特性 (3) 配置端口 (4) 配置一组端口 (4) 配置二层端口 (6) 配置端口速率及双工模式 (6) 端口描述 (7) 配置三层口 (8) 监控及维护端口 (10) 监控端口和控制器的状态 (10) 刷新、重置端口及计数器 (12) 关闭和打开端口 (13) 配置VLAN (14) 理解VLAN (14) 可支持的VLAN (15) 配置正常范围的VLAN (15) 生成、修改以太网VLAN (15) 删除VLAN (17) 将端口分配给一个VLAN (18) 配置VLAN Trunks (19) 使
2、用STP实现负载均衡 (22) 说明 本手册只包括日常使用的有关命令及特性,其它未涉及的命令及特性请参考英文的详细配置手册。 产品特性 3750EMI是支持二层、三层功能(EMI)的交换机 支持VLAN ?到1005 个VLAN ?支持VLAN ID从1到4094(IEEE 802.1Q 标准) ?支持ISL及IEEE 802.1Q封装 安全 ?支持IOS标准的密码保护 ?静态MAC地址映射 ?标准及扩展的访问列表支持,对于路由端口支持入出双向的访问列表,对于二层端口支持入的访问列表 ?支持基于VLAN的访问列表 3层支持(需要多层交换的IOS) ?HSRP ?IP路由协议 o RIP ver
3、sions 1 and 2 o OSPF o IGRP及EIGRP o BGP Version 4 监视 ?交换机LED指示端口状态 ?SPAN及远端SPAN (RSPAN) 可以监视任何端口或VLAN的流量 ?内置支持四组的RMON监控功能(历史、统计、告警及事件) ?Syslog功能 其它功能: 支持以下的GBIC模块: ?1000BASE-T GBIC: 铜线最长100 m ?1000BASE-SX GBIC: 光纤最长1804 feet (550 m) ?1000BASE-LX/LH GBIC: 光纤最长32,808 feet (6 miles or 10 km) ?1000BASE-
4、ZX GBIC: 光纤最长328,084 feet (62 miles or 100 km) 配置端口 配置一组端口 当使用interface range命令时有如下的规则: ?有效的组范围: o vlan从1 到4094 o fastethernet槽位/first port - last port, 槽位为0 o gigabitethernet槽位/first port - last port,槽位为0 o port-channel port-channel-number - port-channel-number, port-channel号从1到64 ?端口号之间需要加入空格,如:in
5、terface range fastethernet 0/1 5是有效的,而interface range fastethernet 0/1-5是无效的. ?interface range命令只能配置已经存在的interface vlan ?所有在同一组的端口必须是相同类别的。 见以下例子: Switch# configure terminal Switch(config)# interface range fastethernet0/1 - 5 Switch(config-if-range)# no shutdown Switch(config-if-range)# *Oct 6 08:24
6、:35: %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up *Oct 6 08:24:35: %LINK-3-UPDOWN: Interface FastEthernet0/2, changed state to up *Oct 6 08:24:35: %LINK-3-UPDOWN: Interface FastEthernet0/3, changed state to up *Oct 6 08:24:35: %LINK-3-UPDOWN: Interface FastEthernet0/4, changed stat
7、e to up *Oct 6 08:24:35: %LINK-3-UPDOWN: Interface FastEthernet0/5, changed state to up *Oct 6 08:24:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/05, changed state to up *Oct 6 08:24:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to up *Oct 6
8、08:24:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/4, changed state to up 以下的例子显示使用句号来配置不同类型端口的组: Switch# configure terminal Switch(config)# interface range fastethernet0/1 - 3, gigabitethernet0/1 - 2 Switch(config-if-range)# no shutdown Switch(config-if-range)# *Oct 6 08:29:28:
9、 %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up *Oct 6 08:29:28: %LINK-3-UPDOWN: Interface FastEthernet0/2, changed state to up *Oct 6 08:29:28: %LINK-3-UPDOWN: Interface FastEthernet0/3, changed state to up *Oct 6 08:29:28: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state
10、 to up *Oct 6 08:29:28: %LINK-3-UPDOWN: Interface GigabitEthernet0/2, changed state to up *Oct 6 08:29:29: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/ 1, changed state to up *Oct 6 08:29:29: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/ 2, changed state to up *
11、Oct 6 08:29:29: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/ 3, changed state to up 配置二层端口 3750的所有端口缺省的端口都是二层口,如果此端口已经配置成三层端口的话,则需要用switchport来使其成为二层端口。 配置端口速率及双工模式 可以配置快速以太口的速率为10/100Mbps及千兆以太口的速率为 10/100/1000-Mbps; 但对于GBIC端口则不能配置速率及双工模式,有时可以配置nonegotiate,当需要联接不支持自适应的其它千兆端口时 Switc
12、h# configure terminal Switch(config)# interface fastethernet0/3 Switch(config-if)# speed 10 Switch(config-if)# duplex half 端口描述 Use the no description interface configuration command to delete the description. This example shows how to add a description on Fast Ethernet interface 0/4 and to verify t
13、he description: Switch# config terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)# interface fastethernet0/4 Switch(config-if)# description Connects to Marketing Switch(config-if)# end Switch# show interfaces fastethernet0/4 description Interface Status Protocol Des
14、cription Fa0/4 up down Connects to Marketing 配置三层口 Catalyst 3750支持三种类型的三层端口: SVIs: 即interface vlan Note当生成一个interface Vlan时,只有当把某一物理端口分配给它时才 能被激活 ?三层以太网通道口(EtherChannel) ?.路由口:路由口是指某一物理端口在端口配置状态下用no switchport命令生成的端口 所有的三层都需要IP地址以实现路由交换 配置步骤如下: 配置举例如下: Switch# configure terminal Enter configuration
15、commands, one per line. End with CNTL/Z. Switch(config)# interface gigabitethernet0/2 Switch(config-if)# no switchport Switch(config-if)# ip address 192.20.135.21 255.255.255.0 Switch(config-if)# no shutdown Switch(config-if)# end show ip interface命令: Switch# show ip interface gigabitethernet0/2 Gig
16、abitEthernet0/2 is up, line protocol is up Internet address is 192.20.135.21/24 Broadcast address is 255.255.255.255 Address determined by setup command MTU is 1500 bytes Helper address is not set Directed broadcast forwarding is disabled 监控及维护端口 监控端口和控制器的状态 主要命令见下表: 举例如下: Switch# show interfaces st
17、atus Port Name Status Vlan Duplex Speed Type Gi0/1 connected routed a-full a-100 10/100/1000Base TX Gi0/2 wce server 20.20.2 disabled routed auto auto 10/100/1000Base TX Gi0/3 ip wccp web-cache notconnect routed auto auto 10/100/1000Base TX Gi0/4 notconnect routed auto auto 10/100/1000Base TX Gi0/5
18、notconnect routed auto auto 10/100/1000Base TX Gi0/6 disabled routed auto auto 10/100/1000Base TX Gi0/7 disabled routed auto auto 10/100/1000Base TX Gi0/8 disabled routed auto 100 10/100/1000Base TX Gi0/9 notconnect routed auto auto 10/100/1000Base TX Gi0/10 notconnect routed auto auto 10/100/1000Base TX Gi0/11 disabled routed auto auto unknown Gi0/12 notconnect routed auto auto unknown Switch# show interfaces fastethernet 0/1 switchport