交换机划分vlan
- 基础知识
- 常用命令
- 实验流程
- 1.设计拓扑
- 2.配置主机IP地址
- 3.配置交换机
- 4.验证主机连通
基础知识
vlan技术可以将一个较大的二层交换网络划分为若干个较小的逻辑网络,每个逻辑网络是一个广播域,且与具体物理位置没有关系,这使vlan技术在局域网中广泛应用。
vlan有以下优点:
- 控制广播域
- 增强网络安全性
- 组网灵活,便于管理
常用命令
命令格式 | 含义 |
enable | 进入特权模式 |
configure terminal | 进入全局配置 |
vlan vlan号 | 创建vlan |
show vlan brief | 查看vlan信息 |
switch mode access | 重置为access |
switch access vlan 10 | 将接口添加到vlan10 |
实验流程
1.设计拓扑
2.配置主机IP地址
3.配置交换机
配置交换机0
Switch>enable
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#vlan 10
Switch(config-vlan)#vlan 20
Switch(config-vlan)#exit
Switch(config)#interface range f0/1-2
Switch(config-if-range)#switch mode access
Switch(config-if-range)#switch access vlan 10
Switch(config-if-range)#exit
Switch(config)#interface f0/3
Switch(config-if)#switch mode access
Switch(config-if)#switch access vlan 20
Switch(config-if)#exit
Switch(config)#interface g0/1
Switch(config-if)#switch mode trunk
Switch(config-if)#end
Switch#
%SYS-5-CONFIG_I: Configured from console by console
Switch#
查看一下配置的信息
Switch#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/4, Fa0/5, Fa0/6, Fa0/7
Fa0/8, Fa0/9, Fa0/10, Fa0/11
Fa0/12, Fa0/13, Fa0/14, Fa0/15
Fa0/16, Fa0/17, Fa0/18, Fa0/19
Fa0/20, Fa0/21, Fa0/22, Fa0/23
Fa0/24, Gig0/2
10 VLAN0010 active Fa0/1, Fa0/2
20 VLAN0020 active Fa0/3
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
Switch#
配置交换机1
Switch>enable
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#vlan 10
Switch(config-vlan)#vlan 20
Switch(config-vlan)#exit
Switch(config)#interface f0/1
Switch(config-if)#switch mode access
Switch(config-if)#switch access vlan 10
Switch(config-if)#exit
Switch(config)#interface range f0/2-3
Switch(config-if-range)#switch mode access
Switch(config-if-range)#switch access vlan 20
Switch(config-if-range)#end
Switch#
%SYS-5-CONFIG_I: Configured from console by console
Switch#
4.验证主机连通
使用主机PC0分别pingvlan10的PC3和vlan20的PC4
C:\>ping 192.168.1.15
Pinging 192.168.1.15 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.1.15:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\>ping 192.168.1.16
Pinging 192.168.1.16 with 32 bytes of data:
Reply from 192.168.1.16: bytes=32 time=1ms TTL=128
Reply from 192.168.1.16: bytes=32 time<1ms TTL=128
Reply from 192.168.1.16: bytes=32 time<1ms TTL=128
Reply from 192.168.1.16: bytes=32 time<1ms TTL=128
Ping statistics for 192.168.1.16:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms
C:\>
由于不在同一个vlan下无法通讯,在同一个vlan下就可以。
其他的就不做验证了。