在对DHCP设置的过程中,我们应该注意一些特别的地方。就如同我们下面将要讲解的静态IP dhcp snooping和IP Source Guard的内容。因为IP Source Guard不能和动态DHCP同时使用,所以就需要设置静态的效果。
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clock timezone WST 8 switch 1 provision ws-c3750g-48ts system mtu routing 1500 ip subnet-zero ! ip dhcp snooping vlan 1 (指定DHCP snooping防护的vlan) ip dhcp snooping information option allow-untrusted ip dhcp snooping database flash:snooping (指定数据库路径) ip dhcp snooping database write-delay 15 ip dhcp snooping (启动DHCP snooping) ! ! ! interface GigabitEthernet1/0/45 (启动IP Source Guard的端口) switchport mode access switchport port-security switchport port-security violation restrict spanning-tree portfast ip verify source port-security (ip verify source port-security是配合启动IP soure binding使用 ip source binding 000A.E439.5F55 vlan 1 192.168.1.200 interface Gi1/0/45,(说明ip source binding和动态DHCP不能同时用,所以我们需要设置静态IP dhcp snooping) )! ! interface Vlan1 ip address 192.168.1.1 255.255.255.0 ! ip classless ip http server ip http secure-server ! ! ip source binding 000A.E439.5F55 vlan 1 192.168.1.200 interface Gi1/0/45 ! control-plane ! !
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注意使用如下命令查看工作状态:
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Switch#sh ip ver source Switch#sh ip dhcp binding Switch#sh ip dhcp snooping binding
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以上就是静态IP dhcp snooping和IP Source Guard的具体设置了。