[转载] 解决gns3 for mac模拟器三层交换机无法成功创建vlan的问题

1.删除之前导入的ios；

2.选择GNS3——Edit——Preferences——IOS routers——New——导入ios—— 勾选This is an EtherSwitch router——next……——默认选择添加了nm-16esw（如无则加上）——计算idle值——Finish；

3.在gns3左侧找到browse all devices，选择刚刚命名的EtherSwitch router即可；

4.验证成功创建vlan。ESW1(config)#no ip routing

ESW1(config)#exit

ESW1#vlan database

% Warning: It is recommended to configure VLAN from config mode,

as VLAN database mode is being deprecated. Please consult user

documentation for configuring VTP/VLAN in config mode.

ESW1(vlan)#vlan 200

VLAN 200 modified:

ESW1(vlan)#exit

APPLY completed.

Exiting....

ESW1#show vlan-sw

ESW1#show vlan-switch

VLAN Name Status Ports

---- -------------------------------- --------- -------------------------------

1 default active Fa1/0, Fa1/2, Fa1/3, Fa1/4

​ Fa1/5, Fa1/6, Fa1/7, Fa1/8

​ Fa1/9, Fa1/10, Fa1/11, Fa1/12

​ Fa1/13, Fa1/14, Fa1/15

200 VLAN0200 active Fa1/1

1002 fddi-default act/unsup

1003 token-ring-default act/unsup

1004 fddinet-default act/unsup

1005 trnet-default act/unsup

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2

---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------

1 enet 100001 1500 - - - - - 1002 1003

200 enet 100200 1500 - - - - - 0 0

1002 fddi 101002 1500 - - - - - 1 1003

1003 tr 101003 1500 1005 0 - - srb 1 1002

1004 fdnet 101004 1500 - - 1 ibm - 0 0

1005 trnet 101005 1500 - - 1 ibm - 0 0

问题的关键在于导入ios的时候就要选择设置为多层交换机，This is an EtherSwitch router.最后这句很重要！

我搞了一天，终于在第二天才解决。有时候连基本的问题都没解决，实验无法继续下去，这种沮丧很痛苦。但解决出来也很兴奋。与诸君共享。

摘自：http://bbs.hh010.com/thread-449068-1-1.html