PVLAN的2种VLAN：
主要VLAN(Primary VLAN)：把流量从混杂端口传送到隔离、团体和同一个VLAN内部的其它主要混杂端口。
辅助VLAN(Secondary VLAN)：辅助VLAN包含两种VLAN类型：
隔离VLAN(Isolated VLAN)：把流量从隔离端口传送到一个混杂端口。隔离VLAN中的端口，使其不能与PVLAN(另一个团体VLAN端口或相同隔离VLAN内的端口)内部的任何其它端口进行第2层通信。若要与其它端口通信，则必须穿越混杂端口。
团体VLAN(Community VLAN)：在相同团体VLAN内部的团体端口之间传送流量并传送到混杂端口，团体VLAN内的端口可以在第2层彼此通信(只是在相同团体VLAN内部)，但是不能与其它团体或隔离VLAN的端口进行通信。若要与其它端口进行通信，则必须穿越混杂端口。
PVLAN的2种端口类型：
混杂端口(Promiscuous Port)：隶属于“Primary VLAN”，一个混杂端口可以与所有接口通信，包括PVLAN内的隔离和团体端口；混杂端口的功能是在团体和隔离的VLAN端口之间传递流量。
主机端口(Host Port)：隶属于“Secondary VLAN”，由于“Secondary VLAN”具有两种属性，那么主机端口依“Secondary VLAN”属性的不同也有两种分类：
隔离端口(Isolated Port)：它与PVLAN内的所有其它端口相分离，除混杂端口外；来源于隔离端口的流量仅仅传送给混杂端口。
团体端口(Community Port)：它在逻辑上把相同区域内部的各个端口和混杂端口结合到一起，流量可以在它们之间传送。
PVLAN的使用规则：
1.一个“Primary PVLAN”当中只能有1个“PromiscuousPort”；
2.一个“Primary PVLAN”当中至少有1个“SecondaryPVLAN”，但是没有上限；
3.一个“Primary PVLAN”当中只能有1个“IsolatedPVLAN”，可以有多个“CommunityPVLAN”；
4.不同“Primary PVLAN”之间的任何端口都不能互相通信(这里“互相通信”是指二层连通性)；
5.“Isolated Port”只能与“Promiscuous Port”通信，除此之外不能与任何其他端口通信；
6.“Community Port”可以和“Promiscuous Port”通信，也可以和同一“Community PVLAN”中的其它物理端
口进行通信，除此之外不能和其他端口通信。
7.创建PVLAN前，需要配置VTP模式为Transparent，在配置PVLAN后，将不能再把模式转变为Server和Client；
8.在配置PVLAN中，不使用VLAN1，VLAN1002 - 1005；
9.三层的VLAN接口只能分配给主VLAN；
10.不能在PVLAN中配置EtherChannel；
11.假如交换机上一个端口作为SPAN的目的端口，这个端口会在配置PVLAN的后失效；
12.PVLAN的端口可以做SPAN的源端口；
13.假如在PVLAN中删除了一个VLAN，那么属于该VLAN的端口将失效。
单位最近更新了一台cisco3560交换机，为了隔绝广播风暴，划了几个vlan,使用pvlan方式划分，1--28口为子vlan501,其中的口可相互通讯,29-38口为vlan502,其中的口相互隔离,39-46为主vlan50的共用出口。
hostname Switch
!
enable password cisco
!
no aaa new-model
system mtu routing 1500
vtp mode transparent
ip subnet-zero
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
vlan 50
private-vlan primary //将VLAN 50定义为主要VLAN
private-vlan association 501-502 //将流量传输到vlan501和502
!
vlan 501
private-vlan community //将VLAN501定义为团体VLAN，团体VLAN下的端口之间可以通信
!
vlan 502
private-vlan isolated //将VLAN502定义为隔离VLAN，隔离VLAN下的端口之间不能通信
!
!
interface FastEthernet0/1
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/2
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/3
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/4
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/5
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/6
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/7
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/8
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/9
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/10
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/11
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/12
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/13
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/14
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/15
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/16
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/17
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/18
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/19
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/20
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/21
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/22
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/23
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/24
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/25
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/26
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/27
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/28
switchport private-vlan host-association 50 501
switchport mode private-vlan host
!
interface FastEthernet0/29
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/30
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/31
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/32
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/33
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/34
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/35
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/36
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/37
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/38
switchport private-vlan host-association 50 502
switchport mode private-vlan host
!
interface FastEthernet0/39
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/40
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/41
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/42
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/43
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/44
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/45
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/46
switchport private-vlan mapping 50 501-502
switchport mode private-vlan promiscuous
!
interface FastEthernet0/47
!
interface FastEthernet0/48
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface GigabitEthernet0/3
!
interface GigabitEthernet0/4
!
interface Vlan1
no ip address
!
interface Vlan50
ip address 10.180.16.254 255.255.255.0
!
ip classless
ip http server
!
!
!
control-plane
!
!
line con 0
exec-timeout 0 0
password cisco
logging synchronous
login
line vty 0 4
password cisco
login
line vty 5 15
password cisco
login
!
end
