写在前面：MAC地址漂移现象是同一个交换机上同一个VLAN从两个端口学习到的同一个MAC地址相互覆盖的现象。
１、拓扑图

２.网络需求
在交换机上配置防MAC地址漂移技术和实现网络互通。

３.配置
通过MAC地址漂移检测技术检测MAC地址是否发生漂移。
[SW2]display current-configuration

sysname SW2

vlan batch 2

cluster enable
ntdp enable
ndp enable

drop illegal-mac alarm

undo mac-learning priority 3 allow-flapping

diffserv domain default

drop-profile default

vlan 2
loop-detect eth-loop block-time 100 retry-times 3

aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password simple admin
local-user admin service-type http

interface Vlanif1

interface MEth0/0/1

interface GigabitEthernet0/0/1

interface GigabitEthernet0/0/2
mac-learning priority 3

interface GigabitEthernet0/0/3

interface GigabitEthernet0/0/4

interface GigabitEthernet0/0/5

interface GigabitEthernet0/0/6

interface GigabitEthernet0/0/7

interface GigabitEthernet0/0/8

interface GigabitEthernet0/0/9

interface GigabitEthernet0/0/10

interface GigabitEthernet0/0/11

interface GigabitEthernet0/0/12

interface GigabitEthernet0/0/13

interface GigabitEthernet0/0/14

interface GigabitEthernet0/0/15

interface GigabitEthernet0/0/16

interface GigabitEthernet0/0/17

interface GigabitEthernet0/0/18

interface GigabitEthernet0/0/19

interface GigabitEthernet0/0/20

interface GigabitEthernet0/0/21

interface GigabitEthernet0/0/22

interface GigabitEthernet0/0/23

interface GigabitEthernet0/0/24

interface NULL0

user-interface con 0
user-interface vty 0 4

return