交换机Trunk端口配置
一组网需求：
1．SwitchA与SwitchB用trunk互连，相同VLAN的PC之间可以互访，不同VLAN的PC之间禁止互访；
二组网图：
1．VLAN内互访，VLAN间禁访
三配置步骤（H3C）：
1 实现VLAN内互访VLAN间禁访配置过程
SwitchA相关配置：
1．创建（进入）VLAN10，将E0/1加入到VLAN10
[SwitchA]vlan 10
[SwitchA-vlan10]port Ethernet 0/1
2．创建（进入）VLAN20，将E0/2加入到VLAN20
[SwitchA]vlan 20
[SwitchA-vlan20]port Ethernet 0/2
3．将端口G1/1配置为Trunk端口，并允许VLAN10和VLAN20通过[SwitchA]interface GigabitEthernet 1/1
[SwitchA-GigabitEthernet1/1]port link-type trunk
[SwitchA-GigabitEthernet1/1]port trunk permit vlan 10 20
SwitchB相关配置：
1．创建（进入）VLAN10，将E0/10加入到VLAN10
[SwitchB]vlan 10
[SwitchB-vlan10]port Ethernet 0/10
2．创建（进入）VLAN20，将E0/20加入到VLAN20
[SwitchB]vlan 20
[SwitchB-vlan20]port Ethernet 0/20
3．将端口G1/1配置为Trunk端口，并允许VLAN10和VLAN20通过[SwitchB]interface GigabitEthernet 1/1
[SwitchB-GigabitEthernet1/1]port link-type trunk
[SwitchB-GigabitEthernet1/1]port trunk permit vlan 10 20
Cisco:
A
Switch>
Switch>
Switch>en
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#ho
swa(config)#hostname Swa
Swa(config)#vlan 10
Swa(config-vlan)#vlan 20
Swa(config-vlan)#exit
Swa(config)#interface f
Swa(config)#interface fastEthernet 0/1
Swa(config-if)#sw
Swa(config-if)#switchport a
Swa(config-if)#switchport access vlan 10
Swa(config-if)#exit
Swa(config)#int
Swa(config)#interface fa
Swa(config)#interface fastEthernet 0/2
Swa(config-if)#sw
Swa(config-if)#switchport a
Swa(config-if)#switchport access vlan 20
Swa(config-if)#
Swa con0 is now available
Press RETURN to get started.
Swa>en
Swa#conf t
Enter configuration commands, one per line. End with CNTL/Z. Swa(config)#
Swa(config)#interface f
Swa(config)#interface fastEthernet 0/24
Swa(config-if)#sw
Swa(config-if)#switchport ?
access Set access mode characteristics of the interface mode Set trunking mode of the interface
native Set trunking native characteristics when interface is in
trunking mode
nonegotiate Device will not engage in negotiation protocol on this
interface
port-security Security related command
priority Set appliance 802.1p priority
trunk Set trunking characteristics of the interface
voice V oice appliance attributes
Swa(config-if)#switchport m
Swa(config-if)#switchport mode ?
access Set trunking mode to ACCESS unconditionally
dynamic Set trunking mode to dynamically negotiate access or trunk mode
trunk Set trunking mode to TRUNK unconditionally
Swa(config-if)#switchport mode t
Swa(config-if)#switchport mode trunk将端口24设置为trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/24, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/24, changed state to up
Swa(config-if)#
B
Switch>en
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#ho
Switch(config)#hostname Swb
Swb(config)#vlan 10
Swb(config-vlan)#vlan 20
Swb(config-vlan)#exit
Swb(config)#int
Swb(config)#interface f
Swb(config)#interface fastEthernet 0/1
Swb(config-if)#sw
Swb(config-if)#switchport a
Swb(config-if)#switchport access vlan 10
Swb(config-if)#exit
Swb(config)#int
Swb(config)#int
Swb(config)#interface fa
Swb(config)#interface fastEthernet 0/2
Swb(config-if)#sw
Swb(config-if)#switchport a
Swb(config-if)#switchport access vlan 20
Swb(config-if)#
Swb con0 is now available
Press RETURN to get started.
%LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/24, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/24, changed state to up
Swb>
Swb>
Swb>en
Swb#conf
Swb#configure t
Swb#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Swb(config)#int
Swb(config)#interface f
Swb(config)#interface fastEthernet 0/24
Swb(config-if)#sw
Swb(config-if)#switchport mo
Swb(config-if)#switchport mode t
Swb(config-if)#switchport mode trunk。