Host flapping on VSS 4510R

SeTar · ‎10-18-2017

Hi guys
Checking the high CPU utilization on VSS 4510R+E detected mac flapping including mac address-table notification mac-move

Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po63 to port Po5
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po5 to port Po63
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: Host 00:02:D1:2F:0E:69 in vlan 737 is moving from port Po36 to port Po5
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: Host 00:02:D1:2F:0E:69 in vlan 737 is moving from port Po5 to port Po36
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po63 to port Po5
Oct 18 15:11:57: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:57: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:56: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:57: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:30:D6:0F:03:C3 in vlan 616 is moving from port Po61 to port Po5
Oct 18 15:11:57: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:57: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:30:D6:0F:03:C3 in vlan 616 is moving from port Po5 to port Po61
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:02:D1:2F:0E:69 in vlan 737 is moving from port Po5 to port Po36
Oct 18 15:11:40: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:E0:91:28:B8:B0 in vlan 606 is moving from port Po24 to port Po5
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po63 to port Po5
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po5 to port Po63
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: Host 84:38:35:C2:D1:07 in vlan 740 is moving from port Gi1/3/29 to port Gi1/2/36
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: Host 38:63:BB:B7:17:3A in vlan 711 is moving from port Po12 to port Po5
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:E0:91:28:B8:B0 in vlan 606 is moving from port Po5 to port Po24
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po63 to port Po5
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po5 to port Po63
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 84:38:35:C2:D1:07 in vlan 740 is moving from port Gi1/3/29 to port Gi1/2/36
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: Host 38:63:BB:B7:17:3A in vlan 711 is moving from port Po5 to port Po12
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 38:63:BB:B7:17:3A in vlan 711 is moving from port Po12 to port Po5
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: Host 84:38:35:C2:D1:07 in vlan 740 is moving from port Gi1/2/36 to port Gi1/3/29
Oct 18 15:11:41: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 38:63:BB:B7:17:3A in vlan 711 is moving from port Po5 to port Po12
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: Host BC:A9:20:3D:A8:83 in vlan 2276 is moving from port Gi1/3/29 to port Gi1/2/36
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po63 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po5 to port Po63
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 84:38:35:C2:D1:07 in vlan 740 is moving from port Gi1/2/36 to port Gi1/3/29
Oct 18 15:11:42: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po63 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 84:38:35:C2:D1:07 in vlan 740 is moving from port Gi1/3/29 to port Gi1/2/36
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po63 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po5 to port Po63
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po63 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po5 to port Po63
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 38:63:BB:B7:17:3A in vlan 711 is moving from port Po12 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po5 to port Po63
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po63 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:61:BF in vlan 400 is moving from port Po5 to port Po63
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po63 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po63 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po5 to port Po63
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po5 to port Po63
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 38:63:BB:B7:17:3A in vlan 711 is moving from port Po12 to port Po5
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 18 15:11:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po63 to port Po5
Oct 18 15:11:44: %C4K_EBM-4-HOSTFLAPPING: Host EC:B1:D7:46:29:BC in vlan 891 is moving from port Po42 to port Po5
Oct 18 15:11:44: %C4K_EBM-4-HOSTFLAPPING: Host 38:63:BB:B7:17:3A in vlan 711 is moving from port Po5 to port Po12
Oct 18 15:11:44: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59

As can be seen in the main interface Po5

core#sh int po5
Port-channel5 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 30f7.0dad.25bd (bia 30f7.0dad.25bd)
Description: Pulkovo-1
MTU 1500 bytes, BW 20000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 7/255, rxload 11/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s, media type is N/A
input flow-control is on, output flow-control is unsupported
Members in this channel: Te1/10/10 Te2/10/10
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output never, output hang never
Last clearing of "show interface" counters 5d05h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 877411000 bits/sec, 109342 packets/sec
5 minute output rate 565110000 bits/sec, 84373 packets/sec
     53714104772 packets input, 57643572095284 bytes, 0 no buffer
     Received 2341166146 broadcasts (2259912191 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     37422650440 packets output, 30025317146696 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
core#
core#sh int Te1/10/10
TenGigabitEthernet1/10/10 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet Port, address is 30f7.0dad.25bd (bia 30f7.0dad.25bd)
MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 9/255, rxload 12/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s, link type is auto, media type is 10GBase-LR
input flow-control is on, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output never, output hang never
Last clearing of "show interface" counters 5d05h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 497341000 bits/sec, 59655 packets/sec
5 minute output rate 376375000 bits/sec, 59620 packets/sec
     30922991648 packets input, 34009519427373 bytes, 0 no buffer
     Received 1292786775 broadcasts (1255389890 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     26995353328 packets output, 20395519929367 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
core#sh int Te2/10/10
TenGigabitEthernet2/10/10 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet Port, address is 4055.39e0.9d59 (bia 4055.39e0.9d59)
MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 4/255, rxload 9/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s, link type is auto, media type is 10GBase-LR
input flow-control is on, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:03, output never, output hang never
Last clearing of "show interface" counters 5d05h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 375383000 bits/sec, 49073 packets/sec
5 minute output rate 183641000 bits/sec, 24076 packets/sec
     22793372129 packets input, 23636293935182 bytes, 0 no buffer
     Received 1048506972 broadcasts (1004644927 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     10428766848 packets output, 9631047012717 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
core#
core#
core#sh run int po5
Building configuration...

Current configuration : 89 bytes
!
interface Port-channel5
description Pulkovo-1
switchport
switchport mode trunk
end

core#sh run int Te1/10/10
Building configuration...

Current configuration : 95 bytes
!
interface TenGigabitEthernet1/10/10
switchport mode trunk
channel-group 5 mode active
end

core#sh run int Te2/10/10
Building configuration...

Current configuration : 95 bytes
!
interface TenGigabitEthernet2/10/10
switchport mode trunk
channel-group 5 mode active
end

At the same time, many VLANs are not created on the recipient switch

1-1.core#sh vl id 740
VLAN id 740 not found in current VLAN database
1-1.core#sh vl id 2011
VLAN id 2011 not found in current VLAN database

Response interface settings

1-1.core#sh run int po1
Building configuration...

Current configuration : 86 bytes
!
interface Port-channel1
description Uplink
switchport
switchport mode trunk
end

1-1.core#sh run int Te1/12
Building configuration...

Current configuration : 112 bytes
!
interface TenGigabitEthernet1/12
description Uplink
switchport mode trunk
channel-group 1 mode active
end

1-1.core#sh run int Te5/1
Building configuration...

Current configuration : 111 bytes
!
interface TenGigabitEthernet5/1
description Uplink
switchport mode trunk
channel-group 1 mode active
end

1-1.core#sh int Po1
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 70ca.9be1.7b00 (bia 70ca.9be1.7b00)
Description: Uplink
MTU 1500 bytes, BW 20000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 11/255, rxload 7/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s, media type is N/A
input flow-control is on, output flow-control is unsupported
Members in this channel: Te1/12 Te5/1
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters 5d04h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 598163000 bits/sec, 89328 packets/sec
5 minute output rate 909625000 bits/sec, 114117 packets/sec
     36948660784 packets input, 29645026584347 bytes, 0 no buffer
     Received 2953035346 broadcasts (2353576255 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     53030762370 packets output, 56919710825515 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
1-1.core#sh int Te1/12
TenGigabitEthernet1/12 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet Port, address is 4055.39e0.9d1f (bia 4055.39e0.9d1f)
Description: Uplink
MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 10/255, rxload 4/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s, link type is auto, media type is 10GBase-LR
input flow-control is on, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:13, output never, output hang never
Last clearing of "show interface" counters 5d04h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 181419000 bits/sec, 25317 packets/sec
5 minute output rate 398817000 bits/sec, 51563 packets/sec
     10288340281 packets input, 9489664280774 bytes, 0 no buffer
     Received 785684529 broadcasts (741411523 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     22512339104 packets output, 23347718529889 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
1-1.core#sh int te5/1
TenGigabitEthernet5/1 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet Port, address is 70ca.9be1.7b00 (bia 70ca.9be1.7b00)
Description: Uplink
MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 13/255, rxload 10/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s, link type is auto, media type is 10GBase-LR
input flow-control is on, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:02, output never, output hang never
Last clearing of "show interface" counters 5d04h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 414054000 bits/sec, 63694 packets/sec
5 minute output rate 511290000 bits/sec, 62534 packets/sec
     26662068872 packets input, 20156782986826 bytes, 0 no buffer
     Received 2167468479 broadcasts (1612253590 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     30520483763 packets output, 33574100263932 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

STP mode is rapid-pvst

Mark Malone · ‎10-18-2017

At the same time, many VLANs are not created on the recipient switch

Are you running VTP so that the vlans pass between switches , without it they wont of in transparent mode or setup in wrong domain

What is the mac address which is been seen in the mac moves , mac moves can be perfectly legitimate , you can turn it off too , if you have devices that move around the building like laptops or wireless devices they can cause mac flaps as the mac is still in the table leaned from one port but then see coming in from another port so it generates a mac move to notify you , could be fine if its that

You can also check if constant STP changes are occurring with below command to see where and how often changes are occurring

show spanning-tree detail | inc ieee|occurr|from|is exec

SeTar · ‎10-19-2017

Mark Malone, thank you for your answer!

Take the VLAN 2011. This is PtP with ASA. Such a scheme:

ASA --lag-- C3750E --lag(PO59)-- C4510E(core) (int vlan 2011)

core#sh run int vla 2011
Building configuration...

Current configuration : 98 bytes
!
interface Vlan2011
description p2p ASA-Servers
ip address 172.16.250.139 255.255.255.248
end

We see the mac flapping:
core#sh mac add dyn vla 2011
Unicast Entries
vlan     mac address     type        protocols               port
---------+---------------+--------+---------------------+-------------------------
2011      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel5

core#
core#
core#sh mac add dyn vla 2011
Unicast Entries
vlan     mac address     type        protocols               port
---------+---------------+--------+---------------------+-------------------------
2011      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59

core#
core#sh mac add dyn vla 2011
Unicast Entries
vlan     mac address     type        protocols               port
---------+---------------+--------+---------------------+-------------------------
2011      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59

core#sh mac add dyn vla 2011
Unicast Entries
vlan     mac address     type        protocols               port
---------+---------------+--------+---------------------+-------------------------
2011      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59

core#sh mac add dyn vla 2011
Unicast Entries
vlan     mac address     type        protocols               port
---------+---------------+--------+---------------------+-------------------------
2011      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel5

core#sh log | i 2011
Oct 19 10:32:42: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 19 10:32:42: %C4K_EBM-4-HOSTFLAPPING: Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59
Oct 19 10:32:42: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po59 to port Po5
Oct 19 10:32:43: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:A0:C9:09:01:01 in vlan 2011 is moving from port Po5 to port Po59

core#sh spa vlan 2011 det | i occurr|from
Number of topology changes 4 last change occurred 1w6d ago
          from Port-channel110

But on the switch where the port looks PO5, this VLAN is not created!!

1-1.core#sh vla id 2011
VLAN id 2011 not found in current VLAN database

Why can this happen?

Mark Malone · ‎10-19-2017

But on the switch where the port looks PO5, this VLAN is not created!!

Are you running VTP server on the core and vtp client on the access switch ?
without that it wont automatically create the vlan it needs to be manually created... its not an automatic process unless setup to be , you can check with show vtp status on each switch

SeTar · ‎10-19-2017

Everywhere is enabled mode transparent

core#sh vtp sta
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : ncg
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : 0200.0000.0064
Configuration last modified by 172.16.1.100 at 0-0-00 00:00:00

Feature VLAN:
--------------
VTP Operating Mode                : Transparent
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 218
Configuration Revision            : 0
MD5 digest                        : 0x06 0xD3 0x50 0xF7 0x02 0x59 0x80 0x3A
                                    0xEB 0x67 0x2F 0x17 0xBC 0x35 0x3A 0x89

1-1.core#sh vtp sta
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : ncg
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : 70ca.9be1.7b00
Configuration last modified by 172.16.5.100 at 0-0-00 00:00:00

Feature VLAN:
--------------
VTP Operating Mode                : Transparent
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 132
Configuration Revision            : 0
MD5 digest                        : 0x01 0x13 0xE8 0xCD 0xCF 0x96 0x5F 0x8A
                                    0x97 0x85 0xDF 0x03 0x46 0xF6 0x12 0xF7

I do not understand why I see mac-adress in vlan 2011 which is not created on the switch from which it comes (lag PO5)

Mark Malone · ‎10-19-2017

so that explains why the vlan is not automatically there as its all transparent

I do not understand why I see mac-adress in vlan 2011 which is not created on the switch from which it comes (lag PO5)

Are you saying that vlan 2011 does not exist on the access switch connected to po5 ?

SeTar · ‎10-19-2017

Yes it is

ASA --lag-- C3750E --lag(PO59)-- Core(4510E VSS)(int vlan 2011) --lag(PO5)-- 1-1.core(4510E)(not created vlan 2011)

VLAN 2011 this is just an example.
There are many of those
And all with PO5

core#sh log
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po63 to port Po5
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:A5:D5:FA in vlan 134 is moving from port Po27 to port Po5
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po5 to port Po63
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host 7C:AD:74:84:ED:50 in vlan 134 is moving from port Po29 to port Po5
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:92:00:A1 in vlan 134 is moving from port Po22 to port Po5
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:92:00:A1 in vlan 134 is moving from port Po5 to port Po22
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:A5:D5:FA in vlan 134 is moving from port Po5 to port Po27
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: Host 7C:AD:74:84:ED:50 in vlan 134 is moving from port Po5 to port Po29
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po22 to port Po5
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po5 to port Po22
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po61 to port Po5
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:92:00:A1 in vlan 134 is moving from port Po5 to port Po22
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:A5:D5:FA in vlan 134 is moving from port Po5 to port Po27
Oct 19 12:53:28: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 7C:AD:74:84:ED:50 in vlan 134 is moving from port Po5 to port Po29
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po22 to port Po5
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po5 to port Po22
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po5 to port Po61
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host F4:6D:04:89:A8:24 in vlan 122 is moving from port Po58 to port Po5
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po61 to port Po5
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po5 to port Po61
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host F4:6D:04:89:A8:24 in vlan 122 is moving from port Po5 to port Po58
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host 84:C7:EA:3D:88:CE in vlan 2276 is moving from port Gi1/2/36 to port Gi1/3/29
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host F4:6D:04:89:A8:24 in vlan 122 is moving from port Po5 to port Po58
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host 70:81:05:88:29:81 in vlan 134 is moving from port Po29 to port Po5
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: Host 70:81:05:88:29:81 in vlan 134 is moving from port Po5 to port Po29
Oct 19 12:53:30: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:1D in vlan 134 is moving from port Po30 to port Po5
Oct 19 12:53:30: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:1D in vlan 134 is moving from port Po5 to port Po30
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:81:05:88:29:81 in vlan 134 is moving from port Po29 to port Po5
Oct 19 12:53:29: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:81:05:88:29:81 in vlan 134 is moving from port Po5 to port Po29
Oct 19 12:53:30: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:1D in vlan 134 is moving from port Po30 to port Po5
Oct 19 12:53:30: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:1D in vlan 134 is moving from port Po5 to port Po30
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po61 to port Po5
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po5 to port Po61
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po63 to port Po5
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po5 to port Po63
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po61 to port Po5
Oct 19 12:53:31: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po5 to port Po61
Oct 19 12:53:32: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po63 to port Po5
Oct 19 12:53:32: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 78:19:F7:4C:8D:7B in vlan 546 is moving from port Po5 to port Po63
Oct 19 12:53:33: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:C4:BA:02 in vlan 134 is moving from port Po17 to port Po5
Oct 19 12:53:33: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FB:35:49 in vlan 134 is moving from port Po36 to port Po5
Oct 19 12:53:33: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FB:35:49 in vlan 134 is moving from port Po5 to port Po36
Oct 19 12:53:33: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:C4:BA:02 in vlan 134 is moving from port Po5 to port Po17
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 19 12:53:33: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:C4:BA:02 in vlan 134 is moving from port Po17 to port Po5
Oct 19 12:53:33: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FB:35:49 in vlan 134 is moving from port Po36 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FB:35:49 in vlan 134 is moving from port Po5 to port Po36
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:C4:BA:02 in vlan 134 is moving from port Po5 to port Po17
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po22 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FB:35:3C in vlan 134 is moving from port Po29 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FB:35:3C in vlan 134 is moving from port Po5 to port Po29
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po5 to port Po22
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B3:A0 in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po22 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FB:35:3C in vlan 134 is moving from port Po29 to port Po5
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FB:35:3C in vlan 134 is moving from port Po5 to port Po29
Oct 19 12:53:34: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:7B in vlan 134 is moving from port Po5 to port Po22
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B3:A0 in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po61 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:A5:D9:3C in vlan 134 is moving from port Po31 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B3:A0 in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B3:A0 in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po61 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po5 to port Po61
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:A5:D9:3C in vlan 134 is moving from port Po5 to port Po31
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po63 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po5 to port Po63
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:A5:D9:3C in vlan 134 is moving from port Po31 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:1C:27:02:46:58 in vlan 616 is moving from port Po5 to port Po61
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:A5:D9:3C in vlan 134 is moving from port Po5 to port Po31
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po63 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:98:0B:6D in vlan 2276 is moving from port Po5 to port Po63
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 19 12:53:36: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:DB:D6:6C in vlan 134 is moving from port Po30 to port Po5
Oct 19 12:53:36: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po63 to port Po5
Oct 19 12:53:35: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 70:CA:9B:E1:8C:BF in vlan 196 is moving from port Po5 to port Po63
Oct 19 12:53:36: %C4K_EBM-4-HOSTFLAPPING: Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:36: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:DB:D6:6C in vlan 134 is moving from port Po30 to port Po5
Oct 19 12:53:36: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po52 to port Po5
Oct 19 12:53:36: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host AC:16:2D:72:B2:EC in vlan 647 is moving from port Po5 to port Po52
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:AF in vlan 134 is moving from port Po33 to port Po5
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: Host E0:2F:6D:FF:70:AF in vlan 134 is moving from port Po5 to port Po33
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:33:0B in vlan 1204 is moving from port Po63 to port Po5
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:56:B9:33:0B in vlan 1204 is moving from port Po5 to port Po63
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: Host 7C:AD:74:84:ED:50 in vlan 134 is moving from port Po29 to port Po5
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: Host 7C:AD:74:84:ED:50 in vlan 134 is moving from port Po5 to port Po29
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:AF in vlan 134 is moving from port Po33 to port Po5
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host E0:2F:6D:FF:70:AF in vlan 134 is moving from port Po5 to port Po33
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:33:0B in vlan 1204 is moving from port Po63 to port Po5
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 00:50:56:B9:33:0B in vlan 1204 is moving from port Po5 to port Po63
Oct 19 12:53:37: %C4K_EBM-4-HOSTFLAPPING: STANDBY:Host 7C:AD:74:84:ED:50 in vlan 134 is moving from port Po29 to port Po5

etc

Mark Malone · ‎10-19-2017

never seen that before if those vlans do not exist at layer 2 not sure how there being sourced form it on core switch and from that PO , so the mac you see as being assigned to vlan 2011 what vlan is it actually part of when you trace it ?

SeTar · ‎10-19-2017

There can be a trigger problem in that one MAC in different VLAN?

core#sh mac address-table dynamic | i c909.0101
188      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59
252      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59
257      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59
600      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59
2011      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel59

1-1.core#sh mac address-table dynamic | i c909.0101
600      00a0.c909.0101   dynamic ip,ipx,assigned,other Port-channel1
1-1.core#sh vla id 2011
VLAN id 2011 not found in current VLAN database
1-1.core#sh vla id 600

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
600 Management                       active    Gi2/1, Gi2/2, Gi2/3, Gi2/4
                                                Gi2/5, Gi2/7, Gi2/8, Gi2/9
                                                Gi2/10, Gi2/11, Gi2/12, Gi2/13
                                                Gi2/14, Gi2/15, Gi2/16, Gi2/17
                                                Gi2/18, Gi2/19, Gi2/20, Gi2/22
                                                Gi2/23, Gi4/23, Gi4/24, Gi7/1
                                                Gi7/2, Gi7/7, Gi7/8, Gi7/9
                                                Gi7/10, Gi7/11, Gi7/13, Gi7/15
                                                Gi7/18, Gi7/19, Gi7/20, Gi7/21
                                                Gi7/22, Gi7/23, Gi7/24, Po1, Po2
                                                Po3

VLAN Type SAID       MTU   Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
600 enet 100600     1500 -      -      -        -    -        0      0

Remote SPAN VLAN
----------------
Disabled

cha0s · ‎12-02-2019

Hello

Have you solved the issue so far ?

How did you do that ?

Have the same problem.

Leo Laohoo · ‎10-18-2017

There are several MAC addresses moving back and forth. Track down these MAC address and find out if they have multiple uplinks to your switch. I am suspecting they do and their switchports aren't configured for etherchannel.