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实验目的
1、理解Trunk的运行原理
2、掌握Trunk的配置方法
实验拓扑
实验需求
1、根据实验拓扑图,完成设备的基本配置;
2、分别在SW1和SW2创建VLAN10和VLAN20,名字为IT和HR;
3、分别在SW1和SW2上把相应的接口划入VLAN10和VLAN20;
4、把SW1和SW2互连的链路配置成Trunk,采用Dot1q封装;
5、测试PC之间的网络连通性。
实验步骤
步骤1:设备的基本配置
配置PC1:
VPCS> set pcname PC1 //设置主机名
PC1> ip 10.1.1.1/24 //设置IP地址
配置PC2:
VPCS> set pcname PC2
PC2> ip 10.1.2.1/24
配置PC3:
VPCS> set pcname PC3
PC3> ip 10.1.1.2/24
配置PC4:
VPCS> set pcname PC4
PC4> ip 10.1.2.2/24
配置SW1:
Switch>enable
Switch#configure terminal
Switch(config)#hostname SW1
SW1(config)#no ip domain-lookup
SW1(config)#line console 0
SW1(config-line)#exec-timeout 0 0
SW1(config-line)#logging synchronous
SW1(config-line)#end
SW1#
配置SW2:
Switch>enable
Switch#configure terminal
Switch(config)#hostname SW2
SW2(config)#no ip domain-lookup
SW2(config)#line console 0
SW2(config-line)#exec-timeout 0 0
SW2(config-line)#logging synchronous
SW2(config-line)#end
SW2#
步骤2:VLAN的配置
配置SW1:
SW1(config)#vlan 10
SW1(config-vlan)#name IT
SW1(config-vlan)#exit
SW1(config)#vlan 20
SW1(config-vlan)#name HR
SW1(config-vlan)#exit
SW1(config)#interface Eth0/1
SW1(config-if)#switchport mode access
SW1(config-if)#switchport access vlan 10
SW1(config-if)#exit
SW1(config)#interface Eth0/2
SW1(config-if)#switchport mode access
SW1(config-if)#switchport access vlan 20
SW1(config-if)#end
SW1#
配置SW2:
SW2(config)#vlan 10
SW2(config-vlan)#name IT
SW2(config-vlan)#exit
SW2(config)#vlan 20
SW2(config-vlan)#name HR
SW2(config-vlan)#exit
SW2(config)#interface Eth0/1
SW2(config-if)#switchport mode access
SW2(config-if)#switchport access vlan 10
SW2(config-if)#exit
SW2(config)#interface Eth0/2
SW2(config-if)#switchport mode access
SW2(config-if)#switchport access vlan 20
SW2(config-if)#end
SW2#
步骤3:Trunk的配置
配置SW1:
SW1(config)#interface Eth0/0
SW1(config-if)#switchport trunk encapsulation dot1q
SW1(config-if)#switchport mode trunk
SW1(config-if)#end
SW1#
配置SW2:
SW2(config)#interface Eth0/0
SW2(config-if)#switchport trunk encapsulation dot1q
SW2(config-if)#switchport mode trunk
SW2(config-if)#end
SW2#
实验检查
步骤1:检查VLAN
检查SW1:
SW1#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Et0/3
10 IT active Et0/1
20 HR active Et0/2
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
SW1已经创建好VLAN10和VLAN20,并已将对应接口划入。
检查SW2:
SW2#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Et0/3
10 IT active Et0/1
20 HR active Et0/2
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
SW2已经创建好VLAN10和VLAN20,并已将对应接口划入。
步骤2:检查Trunk
检查SW1:
SW1#show interfaces Eth0/0 switchport
Name: Et0/0
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Appliance trust: none
E0/0接口当前是Trunk,封装的协议是dot1q。
SW1#show interfaces trunk
Port Mode Encapsulation Status Native vlan
Et0/0 on 802.1q trunking 1
Port Vlans allowed on trunk
Et0/0 1-4094
Port Vlans allowed and active in management domain
Et0/0 1,10,20
Port Vlans in spanning tree forwarding state and not pruned
Et0/0 1,10,20
E0/0封装的Trunk协议是dot1q,当前的状态是trunking。
SW1#sh run int Eth0/0
Building configuration...
Current configuration : 90 bytes
!
interface Ethernet0/0
switchport trunk encapsulation dot1q
switchport mode trunk
end
E0/0接口的Trunk封装协议是dot1q,模式是trunk。
检查SW2:
SW2#show interfaces trunk
Port Mode Encapsulation Status Native vlan
Et0/0 on 802.1q trunking 1
Port Vlans allowed on trunk
Et0/0 1-4094
Port Vlans allowed and active in management domain
Et0/0 1,10,20
Port Vlans in spanning tree forwarding state and not pruned
Et0/0 1,10,20
E0/0封装的Trunk协议是dot1q,当前的状态是trunking。
步骤4:网络连通性测试
测试PC1和PC3的连通性:
PC1> ping 10.1.1.2
84 bytes from 10.1.1.2 icmp_seq=1 ttl=64 time=1.603 ms
84 bytes from 10.1.1.2 icmp_seq=2 ttl=64 time=1.234 ms
84 bytes from 10.1.1.2 icmp_seq=3 ttl=64 time=1.027 ms
84 bytes from 10.1.1.2 icmp_seq=4 ttl=64 time=2.372 ms
84 bytes from 10.1.1.2 icmp_seq=5 ttl=64 time=1.200 ms
PC1和PC3的网络连通性正常。
测试PC2和PC4的连通性:
PC2> ping 10.1.2.2
84 bytes from 10.1.2.2 icmp_seq=1 ttl=64 time=0.887 ms
84 bytes from 10.1.2.2 icmp_seq=2 ttl=64 time=0.932 ms
84 bytes from 10.1.2.2 icmp_seq=3 ttl=64 time=1.295 ms
84 bytes from 10.1.2.2 icmp_seq=4 ttl=64 time=0.926 ms
84 bytes from 10.1.2.2 icmp_seq=5 ttl=64 time=1.011 ms
PC2和PC4的网络连通性正常。
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