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Switchport getting blocked due to broadcast MAC address.

Folks,

One of our user port gets blocked due to the source PC sending out the broadcast as the MAC. What could be the potential reasons? I have requested for a driver upgrade on the NIC card.


Mar 18 09:33:41.954 UTC: %PM-4-ERR_DISABLE: psecure-violation error detected on Gi4/35, putting Gi4/35 in err-disable state
Mar 18 09:33:41.959 UTC: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address ffff.ffff.ffff on port GigabitEthernet4/35.
Mar 18 09:33:41.962 UTC: %PM-4-ERR_DISABLE: STANDBY:psecure-violation error detected on Gi4/35, putting Gi4/35 in err-disable state
Mar 19 02:17:25.654 UTC: %C4K_REDUNDANCY-5-CONFIGSYNC: The private-config has been successfully synchronized to the standby supervisor

Output of the switchport configuration:

sw-user-floor2#sh run int gi 4/35
Building configuration...

Current configuration : 343 bytes
!
interface GigabitEthernet4/35
 switchport access vlan 2
 switchport mode access
 switchport voice vlan 3
 switchport port-security maximum 8
 switchport port-security
 switchport port-security aging time 1
 switchport port-security aging type inactivity
 spanning-tree portfast
 spanning-tree bpduguard enable
 spanning-tree guard root
end

sw-user-floor2#

Regards,

N.

1 Reply 1

Perhaps this previous Support forum link will help

https://supportforums.cisco.com/discussion/11547056/mac-address-table-system-type-entries

also anumber of articles on the web if you search

here is another link

http://www.ccnahub.com/ip-fundamentals/understanding-ethernet-mac-addresses/