实验内容：
1.在cisco交换机上划分vlan
2.配置中继端口
3.配置vtp及vtp透明
4.单臂路由的具体配置
实验拓扑：
1.pc0:192.168.1.1
pc1:192.168.2.1 pc0，pc2 网关：192.168.1.100
pc2:192.168.1.2 pc1，pc3 网关：192.168.2.100
pc3:192.168.2.2
2.sw0:f0/1属于vlan1 f0/2属于vlan2 f0/3设为中继端口
sw1:f0/1与f0/2开启中继
sw2:f0/1属于vlan1 f/2属于vlan2 f0/3与f0/4设为中继端口
3.R0:f0/0.1 192.168.1.100
f0/0.2 192.168.2.100
实验目的:
1.vlan1与vlan2可以互通 如pc0 ping通pc3
2.vtp的配置及服务端与客户端的配置
3.中继端口配置
实验配置:
1.sw0:
enable
vlan database
vtp server (服务端)
vlan 2 name 2
vlan 3 name 3
vtp domain abc.com (这里域名自定义)
conf t
interface FastEthernet0/1
switchport access vlan 1 (现在cisco交换机默认所有端口都属于vlan1 这个命令可以省略)
switchport mode access
interface FastEthernet0/2
switchport access vlan 2
switchport mode access
interface FastEthernet0/3
switchport mode trunk
2.sw1:
enable
vlan database
vtp mode transparent
conf t
interface FastEthernet0/1
switchport mode trunk
interface FastEthernet0/2
switchport mode trunk
3.sw2:
enable
vlan database
vtp client (客户端)
vtp domain abc.com
conf t
interface FastEthernet0/1
switchport mode access
interface FastEthernet0/2
switchport access vlan 2
switchport mode access
interface FastEthernet0/3
switchport mode trunk
interface FastEthernet0/4
switchport mode trunk
4.R0:
enable
conf t
interface FastEthernet0/0
no ip address
no shutdown
duplex auto
speed auto
interface FastEthernet0/0.1
encapsulation dot1Q 1 native
ip address 192.168.1.100 255.255.255.0
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 192.168.2.100 255.255.255.0
实验测试:
1.pc0 ping pc3
PC>ping 192.168.2.2
Pinging 192.168.2.2 with 32 bytes of data:
Reply from 192.168.2.2: bytes=32 time=188ms TTL=127
Reply from 192.168.2.2: bytes=32 time=187ms TTL=127
Reply from 192.168.2.2: bytes=32 time=140ms TTL=127
Reply from 192.168.2.2: bytes=32 time=187ms TTL=127
2.sw2:vtp客户端没有配置vlan 但通过从服务端可以学习到全部vlan
show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, 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, Gig1/1, Gig1/2
2 2 active Fa0/2
3 3 active
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
从这个表中也可以看出思科交换默认端口都是属于vlan1的
3.R0:
show ip route
Gateway of last resort is not set
C 192.168.1.0/24 is directly connected, FastEthernet0/0.1
C 192.168.2.0/24 is directly connected, FastEthernet0/0.2
R0有了2条直连路由条目,这使得vlan1与vlan2可以互通
注意:
本实验使用的是思科2900系列的交换机 默认支持802.1q
如果3层交换设备在设置端口中继模式的时候命令不同
switchport trunk encapsulation {isl/dot1q/nonegotiate}
isl这是早期思科专有协议 现在基本废除
dot1q 就是802.1q 在交换上的输入命令
negotiate 自动匹配模式 必须有一个直连端口已经配置了中继协议802.1q或者isl
