Port security worked when I entered ip address via Packet Tracer

Alhaji265

I was practicing enabling port security on the switch but was unable to get running until I input the ip address for PC3. How come the violation only occurred after I enter the ip address, even though the switch is a L2 device?

The commands I entered were:

interface FastEthernet0/3 switchport mode access
switchport port-security
switchport port-security mac-address 0001.64D2.368E
!

Pic of Switchport Lab (PT).JPG

clarson

I don't use packet tracer so this is just a guess.

it is pc3 that isn't working without it's ip address.

as data flows down the osi stack,
at layer 3 there is the source and destination ip addresses.
there is no source ip address
data packet isn't formed
no data leaves pc3
switch doesn't receive any information
switch doesn't see any errors form pc3

put in a valid ip address for pc3
pc3 starts to send data
switch receives data
switch sees the errors