妖魔道电影国语高清:我要问得是网络管理方面的问题？

vlan 1
vlan 103
vlan 104
vlan 108
vlan 200
vlan 1001
interface Vlan-interface103
ip address 192.168.103.1 255.255.255.0
interface Vlan-interface104
ip address 192.168.104.1 255.255.255.0
interface Vlan-interface108
interface Vlan-interface200
ip address 192.168.91.202 255.255.255.252
interface Vlan-interface1001
ip address 192.168.92.14 255.255.255.240
interface Ethernet0/1
port link-type trunk
port trunk permit vlan all
port trunk pvid vlan 2000
interface Ethernet0/4
port link-type trunk
port trunk permit vlan 108 1001
port trunk pvid vlan 2000
interface Ethernet0/14
port link-type trunk
port trunk permit vlan 108 1001
port trunk pvid vlan 2000
interface Ethernet0/21
port access vlan 105
interface Ethernet0/24
port link-type trunk
port trunk permit vlan all
port trunk pvid vlan 108
ip route-static 0.0.0.0 0.0.0.0 192.168.92.1 preference 60
ip route-static 192.168.92.248 255.255.255.248 192.168.92.1 preference 60
能不能详细解释一下每条命令的含义？配置两条路由的作用是？
如果想另外开一个IP段如103段，在二层交换机上应怎么配置，interface Ethernet0/24
port link-type trunk
port trunk permit vlan all
port trunk pvid vlan 108 为什么和其它端口不一样
谢谢！急需答案！