2950交换机 简明配置维护手册
中望商业机器公司
2002-12-14
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 监控及维护端口 ....................................................................................................................... 8
监控端口和控制器的状态 ............................................................................................... 8 刷新、重置端口及计数器 ............................................................................................. 10 关闭和打开端口 ............................................................................................................. 10
配置VLAN .................................................................................................................................... 11
理解VLAN ............................................................................................................................ 11 可支持的VLAN..................................................................................................................... 12 配置正常范围的VLAN ......................................................................................................... 12
生成、修改以太网VLAN ............................................................................................. 13 删除VLAN..................................................................................................................... 14 将端口分配给一个VLAN ............................................................................................. 15 配置VLAN Trunks ................................................................................................................ 16
使用STP实现负载均衡 ................................................................................................ 19
配置Cluster .................................................................................................................................... 23
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
2950是只支持二层的交换机
支持VLAN
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到250 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
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支持IOS标准的密码保护
支持标准及扩展的访问列表来定义安全策略 支持基于VLAN的访问列表
监视
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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）
配置端口
配置一组端口
命令 目的 Step 1 configure terminal Step 2 interface range {port-range} Step 3 进入配置状态 进入组配置状态 可以使用平时的端口配置命令进行配置 退回 Step 4 end Step 5 show interfaces [interface-id] 验证配置 Step 6 copy running-config startup-config
当使用interface range命令时有如下的规则:
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保存 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
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端口号之间需要加入空格，如：interface 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。
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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 08:24:35: %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 state 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 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: %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 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
*Oct 6 08:29:29: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/ 3, changed state to up