Write out a config to permit only the below MAC address
to pass traffic through a port on your switch.
in another way writhe a confrigation which permit only mac
address trfaic through a port of your switch
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Answer Posted / shahin
Using port security feature of Cisco switch, we can fix a
particular mac add for a fix port.
Switch(config-if)#switchport port-security maximum 1
Switch(config-if)#switchport port-security mac-address
0005.1b00.5b58
Switch(config-if)#switchport port-security violation
shutdown
[SwitchA] (Port no 0/1)
!
!
!
!
!
[PC] (0005.1b00.5b58)
Suppose u hv one switch (ie Switch A). On that,port number
fa 0/1 is connected to PC Which is having mac address
0005.1b00.5b58 . Now u want to allow the mac address of
this PC (0005.1b00.5b58), can only access throgh this port
ie fa 0/1. If any other device attach to this port it will
not work. That means security violation occuring here. So
we also protect this by configuring
"switchport port-security violation shutdown" command.
Hope JITU, this may help u to understand this topic. Give
ur feedback.
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