环路报错在2台交换机上都有，2台交换机上配置是一样的，Host e007.1bf2.ff42 ， Host e007.1bf2.0f96 应该就是2台服务器地址吧？
2台服务器都打环了？那么怎么检查是交换机配置问题，还是网卡配置问题？
报错：
vlan 20 is flapping between port Po1 and port Gi0/20
Jul 19 2020 21:11:57.365: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
Jul 19 2020 21:11:57.633: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 00:16:18.382: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 00:16:18.382: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
Jul 20 2020 02:19:12.010: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 03:20:39.600: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 04:22:05.848: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 04:22:06.183: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
Jul 20 2020 05:23:32.674: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 06:24:59.937: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
Jul 20 2020 07:26:27.066: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
Jul 20 2020 08:27:53.741: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 08:27:53.943: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
Jul 20 2020 09:29:20.837: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 09:29:21.315: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
Jul 20 2020 10:30:47.865: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.ff42 in vlan 20 is flapping between port Po1 and port Gi0/19
Jul 20 2020 10:30:48.167: %SW_MATM-4-MACFLAP_NOTIF: Host e007.1bf2.0f96 in vlan 20 is flapping between port Po1 and port Gi0/20
配置：
以下是配置：
!
spanning-tree mode pvst
spanning-tree extend system-id
spanning-tree vlan 10,20 priority 24576
!
vlan internal allocation policy ascending
!
ip ssh authentication-retries 5
ip ssh version 2
!
!
!
interface Port-channel1
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet0/1
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/2
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/3
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/4
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/5
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/6
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/7
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/8
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/9
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/10
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/11
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/12
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/13
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/14
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/15
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/16
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/17
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/18
switchport access vlan 10
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/19
switchport access vlan 20
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/20
switchport access vlan 20
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/21
switchport access vlan 20
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/22
switchport access vlan 20
switchport mode access
speed 1000
duplex full
!
interface GigabitEthernet0/23
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
!
interface GigabitEthernet0/24
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
!
interface GigabitEthernet0/25
!
interface GigabitEthernet0/26
!
interface GigabitEthernet0/27
!
interface GigabitEthernet0/28
!
interface Vlan1
no ip address
!
interface Vlan10
description link DB-NETWORK
ip address 172.16.1.2 255.255.255.0
!
interface Vlan20
description link RAC-Heart-Network
no ip address
