Cisco实战-配置三层交换的综合案例

interface GigabitEthernet2/13

switchport access vlan 50

no snmp trap link-status !

interface GigabitEthernet2/14

switchport access vlan 50

no snmp trap link-status !

interface GigabitEthernet2/15

switchport access vlan 50

no snmp trap link-status !

interface GigabitEthernet2/16

switchport access vlan 50

no snmp trap link-status !

interface GigabitEthernet2/17

switchport access vlan 50

no snmp trap link-status !

interface GigabitEthernet2/18

switchport access vlan 50

no snmp trap link-status !

interface GigabitEthernet2/19

switchport access vlan 50

no snmp trap link-status !

interface GigabitEthernet2/20

switchport access vlan 50

no snmp trap link-status

!--不将GigabitEthernet2/20～24指定至任何VLAN !

interface GigabitEthernet3/1

switchport trunk encapsulation dot1q

！--启用802.1Q Trunk封装协议，即在该端口创建Trunk

switchport trunk allowed vlan 1-80

！--允许vlan 1-90在该中继线通讯

！--可以拒绝或允许某个VLAN访问该Trunk

！--确保未被授权的VLAN通过该Trunk，实现VLAN的访问安全

switchport mode trunk

！--将该端口设置为Trunk

description netcenter

no snmp trap link-status !

interface GigabitEthernet3/2

switchport access vlan 60

no snmp trap link-status

!--将端口GigabitEthernet3/2指定至VLAN 60 !

interface GigabitEthernet3/3

switchport access vlan 70