VLAN is flapping

[BilalButt62333]

%SW_MATM-4-MACFLAP_NOTIF: Host c84f.86fc.0004 in VLAN 10 is flapping between port Gi1/0/28 and port Te1/1/1
%SW_MATM-4-MACFLAP_NOTIF: Host c84f.86fc.0004 in VLAN 1 is flapping between port Te1/1/1 and port Gi1/0/47

what could be the reason for this, also there was a loop in my network one switch was connected twice with a second switch, could this be the reason if not then what mitigation or how to resolve this 

[marce1000]

 - If there is an accidental loop  then proper STP configurations should prevent a network meltdown, and blocking of involved ports immediately . here you find info about the mac address : https://macaddress.io/mac-address-lookup/A9RzlePm56 , not all observed mac address flapping events are related to network problems. Sometimes clustering solutions of hosts based on a mac address can lead to those messages too, or if wireless clients are hopping between access points (e.g)  , 

 M.

[MHM Cisco World]

are there any Wireless in your network ?

[BilalButt62333]

yes there are wireless , the mac address that i mentioned above i think it's firewall mac address 

[MHM Cisco World]

firewall mac address that not good
are you run ASA HA ??
if yes then check the split brain FW, meaning both FW is active status 

[BilalButt62333]

there are two firewalls in HA mode but not active-active, it's active-passive 

you may say it's sophos

[MHM Cisco World]

you config it as active-passive but it work as active-active this why the MAC address is flapping between two FW. 
f you run ASA 
show failover <<- check the status 

[balaji.bandi]

also there was a loop in my network one switch was connected twice with a second switch,   - need you shed more information this, is this STP blocking ports ?

[paul driver]

Hello
If the mac address related to a vip address of say a  FHRP group (hsrp/vrrp...) then its possible what you see caused by both devices in the FHRP group  going into a active/active state, if so id check the physical connection between the two devices,