大哥，你真牛。

在cisco2900交换机上划VLAN的命令是：set vlan vlan_num
vlan_num 就是你要划分的VLAN序号。关于在2900上的操作命令如下
set vlan vlan_num mod/ports ...
set vlan vlan_num [ name name ] [ type type ] [ mtu mtu ] [ said said ]
      [ state state ] [ ring ring_number ] [ parent vlan_num ]

[ stp stp_type ] [ translation vlan_num ]

Syntax Description
vlan_num The number of the VLAN.
mod The number of the module.
ports The number of the port on the module.
name The name of the VLAN.
type The VLAN type (Ethernet, Token Ring, or TR NET).
mtu The maximum transmission unit (packet size, in bytes) that the VLAN can use.
said Security association identifier.
state The VLAN is either active or suspended.
ring_number Ring number for token ring vlans.
stp_type 1-Source routing transparent, 2-Source routing porting