*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 3.4 配置三层口
Catalyst 3560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）: ：以太通道由被路由端口组成。以太通道端口接口在“配置以太通道”中被描述。
· .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： 命令 目的
Step 1 configure terminal 进入配置状态
Step 2 interface {{fastethernet | gigabitethernet} interface-id} | {vlan vlan-id} | {port-channel port-channel-number} 进入端口配置状态
Step 3 no switchport 把物理端口变成三层口
Step 4 ip address ip_address subnet_mask 配置IP地址和掩码 Step 5 no shutdown 激活端口 Step 6 End 退出
Step 7 show interfaces [interface-id]show ip interface [interface-id]show running-config interface [interface-id] 验证配置
Step 8 copy running-config startup-config 保存配置 配置举例如下：
Switch# configure terminal
Enter configuration 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 3.5 监控及维护端口
3.5.1 监控端口和控制器的状态 主要命令见下表：
Show Commands for Interfaces Command 目的
show interfaces [interface-id] 显示所有端口或某一端口的状态和配置.
show interfaces interface-id status [err-disabled] 显示一系列端口的状态或错误－关闭的状态 show interfaces [interface-id] switchport 显示二层端口的状态，可以用来决定此口是否为二层或三层口。
show interfaces [interface-id] description 显示端口描述
show ip interface [interface-id] 显示所有或某一端口的IP可用性状态 show running-config interface [interface-id] 显示当前配置中的端口配置情况 show version 显示软硬件等情况
举例如下:
Switch# show interfaces status
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 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
Name: Fa0/1 Switchport: Enabled
Administrative Mode: static access Operational Mode: down
Administrative Trunking Encapsulation: dot1q Negotiation of Trunking: Off Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default) Trunking VLANs Enabled: ALL Pruning VLANs Enabled: 2-1001
Protected: false
Unknown unicast blocked: disabled Unknown multicast blocked: disabled
Voice VLAN: dot1p (Inactive) Appliance trust: 5
Switch# show running-config interface fastethernet0/2
Building configuration...
Current configuration : 131 bytes !
interface FastEthernet0/2 switchport mode access switchport protected no ip address mls qos cos 7 mls qos cos override end
3.5.2 刷新、重置端口及计数器 Clear命令 目的
clear counters [interface-id] 清除端口计数器. clear interface interface-id 重置某一端口的硬件逻辑
clear line [number | console 0 | vty number] 重置异步串口的硬件逻辑
Note clear counters 命令只清除用show interface所显示的计数，不影响用snmp得到的计数
举例如下：
Switch# clear counters fastethernet0/5
Clear \ Switch#
*Sep 30 08:42:55: %CLEAR-5-COUNTERS: Clear counter on interface FastEthernet0/5 by vty1 (171.69.115.10)