大家都知道小凡可以模拟路由器，当然它也是可以模拟交换机的，在此本人将小凡中交换机的基本使用做一些简单的介绍。
一、 创建交换机
在创建的时候，选择模块的时候选择NM-16ESW而不是通常使用路由器时选择的NM-4E/T，其它的都跟创建路由器是一样的。
二、 vlan的配置
进入配置模式：
SW1#vlan database
SW1(vlan)#
配置vtp：
SW1(vlan)#vtp ?
client Set the device to client mode.
domain Set the name of the VTP administrative domain.
password Set the password for the VTP administrative domain.
pruning Set the administrative domain to permit pruning.
server Set the device to server mode.
transparent Set the device to transparent mode.
v2-mode Set the administrative domain to V2 mode.
SW1(vlan)#vlan ?
<1-1005> ISL VLAN index
配置vlan
SW1(vlan)#vlan 2 ?
are Maximum number of All Route Explorer hops for this VLAN
backupcrf Backup CRF mode of the VLAN
bridge Bridging characteristics of the VLAN
media Media type of the VLAN
mtu VLAN Maximum Transmission Unit
name Ascii name of the VLAN
parent ID number of the Parent VLAN of FDDI or Token Ring type VLANs
ring Ring number of FDDI or Token Ring type VLANs
said IEEE 802.10 SAID
state Operational state of the VLAN
ste Maximum number of Spanning Tree Explorer hops for this VLAN
stp Spanning tree characteristics of the VLAN
tb-vlan1 ID number of the first translational VLAN for this VLAN (or zero
if none)
tb-vlan2 ID number of the second translational VLAN for this VLAN (or zero
if none)
<cr>
退出配置模式：
SW1(vlan)#exit
三、 查看vlan信息
SW1#sh vtp ?
counters VTP statistics
status VTP domain status
SW1#sh vlan?
vlan-range vlan-switch vlans
其余的跟真机上配置是相同的，这里不作详细介绍。
注意：在模拟环境中做单臂路由的实验时，交换机和路由器间不能启用native，否则两者无法通信。
