SW_MATM-4-MACFLAP_NOTIF flapping between port Gi1/0/21 and port Gi1/0/

[matias-silva]

I am experiencing flap issues on my Cisco 9300 devices. These are connected to 9200 access switches, creating redundancy with two core switches (9300). The access switches have two uplink ports, one connected to each core switch. I have reviewed the spanning-tree, port-channel, and trunk configurations and have not detected any inconsistencies. All devices are provisioned in DNA Center.

When executing a show mac address for the MAC, it is observed that it oscillates between ports 21 and 22. I also checked for multiple MAC addresses on an access port to identify any out-of-standard switches, but nothing was found. No physical loop was detected either.

witch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 52 C9200L-48P-4X 17.09.04a CAT9K_LITE_IOSXE INSTALL

cm_tr_p2c_cabecera1_9300#sh etherchannel summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator

M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port

A - formed by Auto LAG

Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) PAgP Gi1/0/23(P) Gi1/0/24(P)

cm_tr_p2c_cabecera1_9300#

cm_tr_p2c_cabecera1_9300# sh int trunk

Port Mode Encapsulation Status Native vlan
Gi1/0/20 on 802.1q trunking 1
Gi1/0/21 on 802.1q trunking 1
Gi1/0/22 on 802.1q trunking 1
Te1/1/1 on 802.1q trunking 1
Po1 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi1/0/20 19,32,126,132
Gi1/0/21 19,32,126,132
Gi1/0/22 19,32,126,132
Te1/1/1 310,320
Po1 19,32,126,132

Port Vlans allowed and active in management domain
Gi1/0/20 19,32,126,132
Gi1/0/21 19,32,126,132
Gi1/0/22 19,32,126,132
Te1/1/1 310,320
Po1 19,32,126,132

Port Vlans in spanning tree forwarding state and not pruned
Gi1/0/20 19,32,126,132
Gi1/0/21 19,32,126,132
Gi1/0/22 19,32,126,132
Te1/1/1 310,320
Po1 19,32,126,132
cm_tr_p2c_cabecera1_9300#

cm_tr_p2c_cabecera1_9300# sh vl br

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/1, Gi1/0/2, Gi1/0/3, Gi1/0/4, Gi1/0/5, Gi1/0/6, Gi1/0/7, Gi1/0/8, Gi1/0/9, Gi1/0/10, Gi1/0/11, Gi1/0/12
Gi1/0/13, Gi1/0/14, Gi1/0/15, Gi1/0/16, Gi1/0/17, Gi1/0/18, Gi1/0/19, Te1/1/2, Te1/1/3, Te1/1/4, Te1/1/5
Te1/1/6, Te1/1/7, Te1/1/8, Ap1/0/1
19 Admin_y_Ospf active
32 Lan1 active
126 telefonia active
132 ToIP_P2C active
310 WAN_DATOS active
320 WAN_VOZ active
400 VLAN0400 active
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
cm_tr_p2c_cabecera1_9300#

cm_tr_p2c_cabecera1_9300# sh mac add ad c85a.cfa6.c721
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c85a.cfa6.c721 DYNAMIC Gi1/0/22
Total Mac Addresses for this criterion: 1
cm_tr_p2c_cabecera1_9300# sh mac add ad c85a.cfa6.c721
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c85a.cfa6.c721 DYNAMIC Gi1/0/21
Total Mac Addresses for this criterion: 1
cm_tr_p2c_cabecera1_9300# sh mac add ad c85a.cfa6.c721

[MHM Cisco World]

Any update 

MHM

[matias-silva]

The VLAN 126 was completely removed since it is not being used; however, flap logs are still appearing. All switches are running rapid-PVST, but the Layer 2 switches only have the following configuration:

"spanning-tree mode rapid-pvst
spanning-tree extend system-id"

cm_tr_p2c_cabecera1_9300#sh spanning-tree int GigabitEthernet1/0/20 de
Port 20 (GigabitEthernet1/0/20) of VLAN0019 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.20.
Designated root has priority 19, address c47e.e094.5e00
Designated bridge has priority 19, address c47e.e094.5e00
Designated port id is 128.20, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570034, received 17

Port 20 (GigabitEthernet1/0/20) of VLAN0032 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.20.
Designated root has priority 32, address c47e.e094.5e00
Designated bridge has priority 32, address c47e.e094.5e00
Designated port id is 128.20, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570034, received 17

Port 20 (GigabitEthernet1/0/20) of VLAN0132 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.20.
Designated root has priority 132, address c47e.e094.5e00
Designated bridge has priority 132, address c47e.e094.5e00
Designated port id is 128.20, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570034, received 17
cm_tr_p2c_cabecera1_9300#sh spanning-tree int GigabitEthernet1/0/21 de
Port 21 (GigabitEthernet1/0/21) of VLAN0019 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.21.
Designated root has priority 19, address c47e.e094.5e00
Designated bridge has priority 19, address c47e.e094.5e00
Designated port id is 128.21, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570038, received 13

Port 21 (GigabitEthernet1/0/21) of VLAN0032 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.21.
Designated root has priority 32, address c47e.e094.5e00
Designated bridge has priority 32, address c47e.e094.5e00
Designated port id is 128.21, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570038, received 13

Port 21 (GigabitEthernet1/0/21) of VLAN0132 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.21.
Designated root has priority 132, address c47e.e094.5e00
Designated bridge has priority 132, address c47e.e094.5e00
Designated port id is 128.21, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570038, received 13
cm_tr_p2c_cabecera1_9300#sh spanning-tree int GigabitEthernet1/0/22 de
Port 22 (GigabitEthernet1/0/22) of VLAN0019 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.22.
Designated root has priority 19, address c47e.e094.5e00
Designated bridge has priority 19, address c47e.e094.5e00
Designated port id is 128.22, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570047, received 14

Port 22 (GigabitEthernet1/0/22) of VLAN0032 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.22.
Designated root has priority 32, address c47e.e094.5e00
Designated bridge has priority 32, address c47e.e094.5e00
Designated port id is 128.22, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570047, received 13

Port 22 (GigabitEthernet1/0/22) of VLAN0132 is designated forwarding
Port path cost 20000, Port priority 128, Port Identifier 128.22.
Designated root has priority 132, address c47e.e094.5e00
Designated bridge has priority 132, address c47e.e094.5e00
Designated port id is 128.22, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2570047, received 13
cm_tr_p2c_cabecera1_9300#

[MHM Cisco World]

VLAN0019 Desg FWD 15 128.20 P2p
VLAN0032 Desg FWD 15 128.20 P2p
VLAN0126 Desg FWD 15 128.20 P2p
VLAN0132 Desg FWD 20000 128.20 P2p

[matias-silva]

It is because the port has MAB/802.1X authentication enabled. When the ISE is removed from the port, the MAC appears as type “Dynamic.”

[MHM Cisco World]

Yes friend I know but host is connect to cat92001 abd appear to flapping between port connect to both cat92002 and cat92003 (21/22)

[MHM Cisco World]

[matias-silva]

 

[matias-silva]

Attached is the current topology.

SW1_ACCESO_TR_P2C#sh spanning-tree blockedports

Name Blocked Interfaces List
-------------------- ------------------------------------
VLAN0019 Gi1/0/48
VLAN0032 Gi1/0/48
VLAN0132 Gi1/0/48

Number of blocked ports (segments) in the system : 3

SW1_ACCESO_TR_P2C#sh cdp nei
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
cm_tr_p2c_cabecera1_9300.banco.bestado.cl
Gig 1/0/47 160 R S I C9300-24T Gig 1/0/20
cm_tr_p2c_cabecera2_9300.banco.bestado.cl
Gig 1/0/48 178 R S I C9300-24T Gig 1/0/20

Total cdp entries displayed : 2
SW1_ACCESO_TR_P2C#

SW2_ACCESO_TR_P2C#sh spanning-tree blockedports

Name Blocked Interfaces List
-------------------- ------------------------------------
VLAN0019 Gi1/0/48
VLAN0032 Gi1/0/48
VLAN0132 Gi1/0/48

Number of blocked ports (segments) in the system : 3

SW2_ACCESO_TR_P2C#sh cdp nei
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
cm_tr_p2c_cabecera1_9300.banco.bestado.cl
Gig 1/0/47 174 R S I C9300-24T Gig 1/0/21
cm_tr_p2c_cabecera2_9300.banco.bestado.cl
Gig 1/0/48 178 R S I C9300-24T Gig 1/0/21

Total cdp entries displayed : 2
SW2_ACCESO_TR_P2C#

SW3_ACCESO_TR_P2C#sh spanning-tree blockedports

Name Blocked Interfaces List
-------------------- ------------------------------------
VLAN0019 Gi1/0/48
VLAN0032 Gi1/0/48
VLAN0132 Gi1/0/48

Number of blocked ports (segments) in the system : 3

SW3_ACCESO_TR_P2C#sh cdp nei
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
cm_tr_p2c_cabecera1_9300.banco.bestado.cl
Gig 1/0/47 159 R S I C9300-24T Gig 1/0/22
cm_tr_p2c_cabecera2_9300.banco.bestado.cl
Gig 1/0/48 171 R S I C9300-24T Gig 1/0/22

Total cdp entries displayed : 2
SW3_ACCESO_TR_P2C#

[matias-silva]

cm_tr_p2c_cabecera1_9300#sh cdp nei Gig 1/0/20
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW1_ACCESO_TR_P2C.banco.bestado.cl
Gig 1/0/20 160 S I C9200L-48 Gig 1/0/47

Total cdp entries displayed : 1
cm_tr_p2c_cabecera1_9300#sh cdp nei Gig 1/0/21
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW2_ACCESO_TR_P2C.banco.bestado.cl
Gig 1/0/21 148 S I C9200L-48 Gig 1/0/47

Total cdp entries displayed : 1
cm_tr_p2c_cabecera1_9300#sh cdp nei Gig 1/0/22
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW3_ACCESO_TR_P2C.banco.bestado.cl
Gig 1/0/22 168 S I C9200L-48 Gig 1/0/47

Total cdp entries displayed : 1
cm_tr_p2c_cabecera1_9300#

cm_tr_p2c_cabecera2_9300#sh cdp nei Gig 1/0/20
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW1_ACCESO_TR_P2C.banco.bestado.cl
Gig 1/0/20 135 S I C9200L-48 Gig 1/0/48

Total cdp entries displayed : 1
cm_tr_p2c_cabecera2_9300#sh cdp nei Gig 1/0/21
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW2_ACCESO_TR_P2C.banco.bestado.cl
Gig 1/0/21 148 S I C9200L-48 Gig 1/0/48

Total cdp entries displayed : 1
cm_tr_p2c_cabecera2_9300#sh cdp nei Gig 1/0/22
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW3_ACCESO_TR_P2C.banco.bestado.cl
Gig 1/0/22 166 S I C9200L-48 Gig 1/0/48

Total cdp entries displayed : 1
cm_tr_p2c_cabecera2_9300#

[matias-silva]

013833: *Aug 20 23:57:20: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013834: *Aug 21 00:05:22: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013835: *Aug 21 00:05:54: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013836: *Aug 21 00:06:06: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013837: *Aug 21 00:07:22: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013838: *Aug 21 00:08:19: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013839: *Aug 21 00:10:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013842: *Aug 21 00:20:48: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013843: *Aug 21 00:21:47: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013844: *Aug 21 00:27:55: %SW_MATM-4-MACFLAP_NOTIF: Host a425.1bc1.ee6a in vlan 132 is flapping between port Gi1/0/22 and port Gi1/0/20
013845: *Aug 21 00:30:50: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013846: *Aug 21 00:37:14: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013847: *Aug 21 00:40:15: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013848: *Aug 21 00:40:50: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013851: *Aug 21 00:51:52: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013852: *Aug 21 00:53:29: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013853: *Aug 21 00:57:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013854: *Aug 21 01:00:19: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013855: *Aug 21 01:01:34: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013856: *Aug 21 01:14:36: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013857: *Aug 21 01:15:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013858: *Aug 21 01:15:51: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013859: *Aug 21 01:16:40: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013862: *Aug 21 01:20:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013863: *Aug 21 01:23:37: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013864: *Aug 21 01:25:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013865: *Aug 21 01:27:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013866: *Aug 21 01:28:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013867: *Aug 21 01:30:09: %SW_MATM-4-MACFLAP_NOTIF: Host a425.1bc1.ee6a in vlan 132 is flapping between port Gi1/0/22 and port Gi1/0/20
013868: *Aug 21 01:30:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013869: *Aug 21 01:30:54: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013870: *Aug 21 01:35:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013871: *Aug 21 01:40:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013874: *Aug 21 01:55:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013875: *Aug 21 01:56:48: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013876: *Aug 21 01:59:32: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013877: *Aug 21 02:00:01: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013878: *Aug 21 02:00:47: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013879: *Aug 21 02:01:47: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013880: *Aug 21 02:02:22: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013881: *Aug 21 02:05:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013882: *Aug 21 02:06:04: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013883: *Aug 21 02:07:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013884: *Aug 21 02:17:41: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013887: *Aug 21 02:23:44: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013888: *Aug 21 02:29:32: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013889: *Aug 21 02:30:21: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013890: *Aug 21 02:35:55: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013891: *Aug 21 02:37:30: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013894: *Aug 21 02:50:45: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013895: *Aug 21 02:51:51: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013896: *Aug 21 02:52:32: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013897: *Aug 21 02:55:03: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013898: *Aug 21 03:04:33: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013899: *Aug 21 03:07:50: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013900: *Aug 21 03:08:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013901: *Aug 21 03:09:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013902: *Aug 21 03:10:15: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013903: *Aug 21 03:10:45: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013906: *Aug 21 03:20:14: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013907: *Aug 21 03:31:51: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013908: *Aug 21 03:37:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013909: *Aug 21 03:38:15: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013910: *Aug 21 03:41:51: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013911: *Aug 21 03:43:07: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013913: *Aug 21 03:48:36: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013915: *Aug 21 03:51:51: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013916: *Aug 21 03:56:45: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013917: *Aug 21 04:00:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013918: *Aug 21 04:00:49: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013919: *Aug 21 04:04:21: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013920: *Aug 21 04:05:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013921: *Aug 21 04:06:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013922: *Aug 21 04:15:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013925: *Aug 21 04:20:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013926: *Aug 21 04:23:45: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013927: *Aug 21 04:25:13: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013928: *Aug 21 04:25:27: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013929: *Aug 21 04:30:56: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013930: *Aug 21 04:33:29: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013931: *Aug 21 04:34:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013932: *Aug 21 04:37:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013933: *Aug 21 04:37:38: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013934: *Aug 21 04:43:47: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013936: *Aug 21 04:49:37: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013938: *Aug 21 04:50:48: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013939: *Aug 21 04:51:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013940: *Aug 21 04:51:41: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013941: *Aug 21 04:51:52: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013942: *Aug 21 04:52:39: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013943: *Aug 21 04:55:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013944: *Aug 21 04:59:38: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013945: *Aug 21 05:06:08: %SW_MATM-4-MACFLAP_NOTIF: Host a425.1bc1.ee6a in vlan 132 is flapping between port Gi1/0/22 and port Gi1/0/20
013946: *Aug 21 05:06:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013947: *Aug 21 05:07:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013948: *Aug 21 05:10:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013949: *Aug 21 05:10:28: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013950: *Aug 21 05:11:55: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013951: *Aug 21 05:15:16: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013953: *Aug 21 05:19:56: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013955: *Aug 21 05:21:50: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013956: *Aug 21 05:23:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013957: *Aug 21 05:25:32: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013958: *Aug 21 05:30:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013959: *Aug 21 05:35:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013960: *Aug 21 05:40:45: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013961: *Aug 21 05:45:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013964: *Aug 21 05:50:49: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013965: *Aug 21 05:54:38: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013966: *Aug 21 05:55:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013967: *Aug 21 06:00:05: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013968: *Aug 21 06:04:37: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013969: *Aug 21 06:05:19: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013970: *Aug 21 06:07:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013971: *Aug 21 06:09:09: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
013972: *Aug 21 06:15:25: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013975: *Aug 21 06:20:11: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013976: *Aug 21 06:35:17: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013977: *Aug 21 06:35:29: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013978: *Aug 21 06:37:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013979: *Aug 21 06:40:13: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013980: *Aug 21 06:42:43: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013982: *Aug 21 06:49:33: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013984: *Aug 21 06:50:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013985: *Aug 21 07:00:21: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013986: *Aug 21 07:05:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013987: *Aug 21 07:07:50: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013988: *Aug 21 07:10:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013989: *Aug 21 07:15:14: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013991: *Aug 21 07:19:35: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013993: *Aug 21 07:20:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013994: *Aug 21 07:20:53: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013995: *Aug 21 07:23:02: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013996: *Aug 21 07:27:50: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
013997: *Aug 21 07:30:15: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013998: *Aug 21 07:30:31: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
013999: *Aug 21 07:30:34: %SW_MATM-4-MACFLAP_NOTIF: Host a425.1bc1.ee6a in vlan 132 is flapping between port Gi1/0/22 and port Gi1/0/20
014000: *Aug 21 07:35:30: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014001: *Aug 21 07:44:37: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014004: *Aug 21 07:50:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014005: *Aug 21 07:52:23: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
014006: *Aug 21 08:00:21: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014007: *Aug 21 08:01:18: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014008: *Aug 21 08:01:52: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014009: *Aug 21 08:06:08: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014010: *Aug 21 08:06:13: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014011: *Aug 21 08:07:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014012: *Aug 21 08:07:38: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014013: *Aug 21 08:08:30: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014014: *Aug 21 08:10:49: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014015: *Aug 21 08:15:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014018: *Aug 21 08:21:05: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014019: *Aug 21 08:21:40: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014020: *Aug 21 08:21:49: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014021: *Aug 21 08:22:43: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014022: *Aug 21 08:23:03: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014023: *Aug 21 08:25:17: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014024: *Aug 21 08:25:30: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014025: *Aug 21 08:27:43: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014027: *Aug 21 08:30:55: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014028: *Aug 21 08:31:47: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014030: *Aug 21 08:35:18: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014031: *Aug 21 08:36:18: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014032: *Aug 21 08:37:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014033: *Aug 21 08:38:16: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014034: *Aug 21 08:39:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014035: *Aug 21 08:40:18: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014036: *Aug 21 08:40:58: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014037: *Aug 21 08:41:45: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014038: *Aug 21 08:43:04: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014041: *Aug 21 08:51:04: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
014042: *Aug 21 08:52:44: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014043: *Aug 21 08:55:49: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014044: *Aug 21 08:59:53: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014045: *Aug 21 09:00:20: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014046: *Aug 21 09:02:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014047: *Aug 21 09:05:30: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014048: *Aug 21 09:05:52: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014049: *Aug 21 09:06:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014050: *Aug 21 09:07:23: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014051: *Aug 21 09:08:18: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014052: *Aug 21 09:09:39: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014053: *Aug 21 09:10:10: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014054: *Aug 21 09:11:50: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014055: *Aug 21 09:12:04: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
014056: *Aug 21 09:12:26: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014057: *Aug 21 09:12:46: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014058: *Aug 21 09:15:08: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014059: *Aug 21 09:15:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014061: *Aug 21 09:18:39: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
014062: *Aug 21 09:19:38: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014064: *Aug 21 09:22:37: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014065: *Aug 21 09:25:07: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014066: *Aug 21 09:25:28: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
014067: *Aug 21 09:29:39: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014068: *Aug 21 09:30:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/20 and port Gi1/0/21
014069: *Aug 21 09:31:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014070: *Aug 21 09:35:36: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
014071: *Aug 21 09:35:48: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014072: *Aug 21 09:36:17: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014073: *Aug 21 09:37:39: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014074: *Aug 21 09:38:17: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014075: *Aug 21 09:40:22: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014076: *Aug 21 09:44:56: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014077: *Aug 21 09:47:53: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014080: *Aug 21 09:50:52: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014081: *Aug 21 09:51:51: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014082: *Aug 21 09:53:06: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014083: *Aug 21 09:54:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014084: *Aug 21 09:58:17: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014085: *Aug 21 10:06:09: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014086: *Aug 21 10:06:16: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014087: *Aug 21 10:09:19: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014088: *Aug 21 10:09:46: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014089: *Aug 21 10:11:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014090: *Aug 21 10:12:18: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014091: *Aug 21 10:12:51: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014092: *Aug 21 10:15:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014095: *Aug 21 10:20:35: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014096: *Aug 21 10:25:07: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014097: *Aug 21 10:25:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014098: *Aug 21 10:25:53: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014099: *Aug 21 10:28:19: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014100: *Aug 21 10:28:36: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
014101: *Aug 21 10:29:21: %SW_MATM-4-MACFLAP_NOTIF: Host 24d9.2149.39c5 in vlan 132 is flapping between port Gi1/0/21 and port Gi1/0/22
014102: *Aug 21 10:30:32: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014103: *Aug 21 10:35:34: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014104: *Aug 21 10:35:48: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014105: *Aug 21 10:36:02: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014106: *Aug 21 10:37:24: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014109: *Aug 21 10:38:04: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014110: *Aug 21 10:38:13: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014111: *Aug 21 10:38:36: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
014112: *Aug 21 10:38:47: %SW_MATM-4-MACFLAP_NOTIF: Host c018.0386.af9c in vlan 32 is flapping between port Gi1/0/21 and port Gi1/0/20
cm_tr_p2c_cabecera1_9300# sh clock
*10:40:09.165 SCL Thu Aug 21 2025
cm_tr_p2c_cabecera1_9300#

[MHM Cisco World]

c018.0386.af9c <<- check this MAC in table of SW9200 1/2

It can ONE Server have two leg connect to both SW

[matias-silva]

cm_tr_p2c_cabecera1_9300#sh mac add add c018.0386.af9c
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c018.0386.af9c DYNAMIC Gi1/0/21
Total Mac Addresses for this criterion: 1
cm_tr_p2c_cabecera1_9300#sh mac add add c018.0386.af9c
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c018.0386.af9c DYNAMIC Gi1/0/20
Total Mac Addresses for this criterion: 1

SW1_ACCESO_TR_P2C#sh mac add add c018.0386.af9c
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c018.0386.af9c STATIC Gi1/0/25
Total Mac Addresses for this criterion: 1
SW1_ACCESO_TR_P2C#sh run int Gi1/0/25
Building configuration...

Current configuration : 260 bytes
!
interface GigabitEthernet1/0/25
description lan datos
switchport mode access
device-tracking attach-policy IPDT_POLICY
ip flow monitor IPv4_NETFLOW input
dot1x max-reauth-req 3
no macro auto processing
source template MAB
spanning-tree portfast
end

SW1_ACCESO_TR_P2C#sh mac add int Gi1/0/25
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c018.0386.af9c STATIC Gi1/0/25
Total Mac Addresses for this criterion: 1
SW1_ACCESO_TR_P2C#

SW2_ACCESO_TR_P2C#sh mac add add c018.0386.af9c
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----

SW3_ACCESO_TR_P2C#sh mac add add c018.0386.af9c
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c018.0386.af9c DYNAMIC Gi1/0/47
Total Mac Addresses for this criterion: 1
SW3_ACCESO_TR_P2C#sh cdp nei
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
cm_tr_p2c_cabecera1_9300.banco.bestado.cl
Gig 1/0/47 124 R S I C9300-24T Gig 1/0/22
cm_tr_p2c_cabecera2_9300.banco.bestado.cl
Gig 1/0/48 152 R S I C9300-24T Gig 1/0/22

Total cdp entries displayed : 2
SW3_ACCESO_TR_P2C#

[MHM Cisco World]

SW1_ACCESO_TR_P2C#sh run int Gi1/0/25 <<- what device connect to this port?

MHM

[matias-silva]

There is only one HP computer connected.

SW1_ACCESO_TR_P2C#sh mac add int GigabitEthernet1/0/25
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
32 c018.0386.af9c STATIC Gi1/0/25
Total Mac Addresses for this criterion: 1
SW1_ACCESO_TR_P2C#sh run int GigabitEthernet1/0/25
Building configuration...

Current configuration : 260 bytes
!
interface GigabitEthernet1/0/25
description lan datos
switchport mode access
device-tracking attach-policy IPDT_POLICY
ip flow monitor IPv4_NETFLOW input
dot1x max-reauth-req 3
no macro auto processing
source template MAB
spanning-tree portfast
end

SW1_ACCESO_TR_P2C#sh cdp nei GigabitEthernet1/0/25
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID

Total cdp entries displayed : 0
SW1_ACCESO_TR_P2C#

[Jose Suarez]

Hi, 

Did you verify that all the switch were using the same STP(RSTP or rapid-pvst)?

Could you share the "show spanning-tree summary" of the access router too?