Hi,

Client replaced a switch from 3750 to 35850 and got problems with port-security.

%PORT_SECURITY-2-PSECURE_VIOLATION

That is more interesting:

Security Violation Count   : 0

It's not increased.

WS-C3850-48T       03.03.01SE

port config on old 3750:

interface GigabitEthernet1/0/3
  switchport access vlan 500
  switchport mode access
  switchport port-security maximum 2
  switchport port-security
  switchport port-security aging time 2
  switchport port-security violation restrict
  switchport port-security aging type inactivity
  no mdix auto
  spanning-tree portfast
  spanning-tree bpduguard enable

port config on 3850:

interface GigabitEthernet1/0/3

switchport access vlan 500

switchport mode access

switchport port-security maximum 10

switchport port-security

switchport port-security aging time 2

switchport port-security violation restrict

switchport port-security aging type inactivity 

no mdix auto 

spanning-tree portfast 

spanning-tree bpduguard enable

sh mac addr sec

Port Security              : Enabled
Port Status                : Secure-up
Violation Mode             : Restrict
Aging Time                 : 2 mins
Aging Type                 : Inactivity
SecureStatic Address Aging : Disabled
Maximum MAC Addresses      : 10
Total MAC Addresses        : 1
Configured MAC Addresses   : 0
Sticky MAC Addresses       : 0
Last Source Address:Vlan   : 28d2.4408.437c:500
Security Violation Count   : 0

sho mac address-table secure interface
GigabitEthernet1/0/3
         Mac Address Table
-------------------------------------------

Vlan    Mac Address       Type        Ports
----    -----------       --------    -----
500    28d2.4408.437c    STATIC      Gi1/0/3
Total Mac Addresses for this criterion: 1

But all the time it's connected I got :

%PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 28d2.4408.437c on port GigabitEthernet1/0/3

BR,

Ugis