SVI:众所周知交换机是没有ip地址的,如果要配置的话一般需要本地console连接设置,这样在后期运维过程中不得不总是要跑到现场调试,SVI配置就是将交换机的一个vlan口,设置ip地址在配合Telnet远程登录权限,这样后期运维人员就可以远程通过ip地址直接Telnet登录到交换机内部进配置。

LSW1:
LSW1valn 10 20
LSW1int vlanif 10 创建交换机虚拟接口vlanif 10 (SVI)
LSW1-Vlanif10ip add 192.168.10.1 24 配置ip地址作为vlan10网关
LSW1int vlanif 20
LSW1-Vlanif20ip add 192.168.20.1 24 配置ip地址作为vlan20网关
注意:可以将三层交换机抽象成一台路由器,vlanif接口就是路由器的接口。
二层SVI

sw2:
LSW1vlan batch 10 30
LSW1interface Ethernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
interface Ethernet0/0/2
port link-type access
port default vlan 10
interface Ethernet0/0/3
port link-type access
port default vlan 30
sw3:
vlan 20
interface Ethernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
interface Ethernet0/0/2
port link-type access
port default vlan 20
sw1:
vlan batch 10 20 30
interface Vlanif10
ip address 192.168.10.1 255.255.255.0
interface Vlanif20
ip address 192.168.20.1 255.255.255.0
interface Vlanif30
ip address 192.168.30.1 255.255.255.0
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan all
interface GigabitEthernet0/0/2 port link-type trunk
port trunk allow-pass vlan all