enable #进入特权模式
configure terminal #进入全局配置模式
hostname [hostname] #配置主机名
interface [interface-type] [interface-number] #配置接口
ip address [ip-address] [subnet-mask] #配置IP地址
no shutdown #启用接口
shutdown #禁用接口
ip route [destination-network] [subnet-mask] [next-hop-address] #配置路由
ip route 0.0.0.0 0.0.0.0 [next-hop-address] #配置默认路由
ip route [destination-network] [subnet-mask] [interface-type] [interface-number] #配置静态路由
安全配置命令
enable secret [password] #配置密码
#配置控制台密码
line console 0
password [password]
login
#配置VTY密码
line vty 0 4
password [password]
login
#配置SSH访问
crypto key generate rsa
ip ssh version 2
line vty 0 4
transport input ssh
网络服务配置命令
#配置DHCP服务
service dhcp
ip dhcp pool [pool-name]
network [network-address] [subnet-mask]
default-router [ip-address]
dns-server [ip-address]
#配置NAT
ip nat inside source static [local-ip] [global-ip]
interface [interface-type] [interface-number]
ip nat inside
interface [interface-type] [interface-number]
ip nat outside
查看和调试命令
show interfaces #查看接口状态
show ip route #查看路由表
show ip nat translations #查看NAT转换
show version #查看系统信息
show running-config #查看配置文件
write memory #保存配置
reload #重启设备