1、display ip interface brief 查看接口與IP相關信息
2、display ip routing-table 查看路由表信息
3、PC1、PC2自動獲取IP地址，且能互相ping通對方。R1能夠以aaa認證telnet到R2，用戶名zhaoxixc密碼hcnp。
R1配置：
interface Ethernet0/0/0
ip address 192.168.2.1 255.255.255.0
dhcp select interface
#
interface Ethernet0/0/1
ip address 192.168.1.1 255.255.255.0
ip route-static 192.168.3.0 255.255.255.0 192.168.1.2
R2配置：
interface Ethernet0/0/0
ip address 192.168.3.1 255.255.255.0
dhcp select interface
#
interface Ethernet0/0/1
ip address 192.168.1.2 255.255.255.0
ip route-static 192.168.2.0 255.255.255.0 192.168.1.1
aaa
local-user zhaoxixc password cipher hcnp pr level 3
user-interface vty 0 4
authentication-mode aaa
4、password認證telnet
R1：
interface Ethernet0/0/0
ip address 192.168.1.1 255.255.255.0
R2：
interface Ethernet0/0/0
ip address 192.168.1.2 255.255.255.0
user-interface vty 0 4
authentication-mode password
set authentication password simple hcnp
user privilege level 3
五、配置靜態ARP
display arp all 查看arp 信息
配置靜態ARP：arp static XXX.XXX.XXX.XXX（IP） 0000.0000.0000.0000（MAC）
六、ARP代理配置
interface GigabitEthernet0/0/1
arp-proxy enable
七、同部門裏互相通信，不通部門不通，但是IT部門可以和任意部門互通。
S1配置：
vlan batch 10 20 30
interface Ethernet0/0/1
port hybrid tagged vlan 10 20 30
#
interface Ethernet0/0/2
port hybrid pvid vlan 20
port hybrid untagged vlan 20 30
#
interface Ethernet0/0/3
port hybrid pvid vlan 10
port hybrid untagged vlan 10 30
#
interface Ethernet0/0/4
port hybrid pvid vlan 30
port hybrid untagged vlan 10 20 30
S2配置：
vlan batch 10 20 30
interface Ethernet0/0/1
port hybrid tagged vlan 10 20 30
#
interface Ethernet0/0/2
port hybrid pvid vlan 20
port hybrid untagged vlan 20 30
#
interface Ethernet0/0/3
port hybrid pvid vlan 10
port hybrid untagged vlan 10 30
