I have set port channel in my switch Cisco 2960, and i receiving the following error since then,
Error: 40371: 5w2d: %SW_MATM-4-MACFLAP_NOTIF: Host e41f.13fc.7781 in vlan 1 is flapping between port Gi0/17 and port Gi0/15
Please guide me how to fix it, config of my switch is pasted below
Config:
version 12.2
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname xxxxx
!
logging count
logging buffered informational
enable secret 5 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
!
username nog1 secret 5 xxxxxxxxxxxxxxxxxxxxxxx
aaa new-model
aaa authentication login console-login local
aaa authentication login vty-login group tacacs+ local
aaa authentication enable default group tacacs+ enable
aaa accounting commands 15 default start-stop group tacacs+
!
aaa session-id common
clock timezone pst 5
system mtu routing 1500
ip subnet-zero
no ip source-route
no ip gratuitous-arps
!
no ip domain-lookup
ip domain-name cdcpak.com
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface Port-channel1
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
!
interface Port-channel2
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
!
interface GigabitEthernet0/1
description BA_DMZ (Assigned to Po1 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
channel-group 1 mode active
!
interface GigabitEthernet0/2
description BA_DMZ (Assigned to Po1 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
channel-group 1 mode active
!
interface GigabitEthernet0/3
switchport mode access
speed 100
duplex full
!
interface GigabitEthernet0/4
description BA_DMZ (Assigned to Po1 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
channel-group 1 mode active
!
interface GigabitEthernet0/5
switchport mode access
speed 100
duplex full
!
interface GigabitEthernet0/6
switchport mode access
!
interface GigabitEthernet0/7
switchport mode access
!
interface GigabitEthernet0/8
description BA_DMZ (Assigned to Po1 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
channel-group 1 mode active
!
interface GigabitEthernet0/9
switchport mode access
speed 100
duplex full
!
interface GigabitEthernet0/10
!
interface GigabitEthernet0/11
switchport mode access
speed 100
duplex full
!
interface GigabitEthernet0/12
switchport mode access
speed 100
duplex full
!
interface GigabitEthernet0/13
switchport mode access
speed 100
duplex full
!
interface GigabitEthernet0/14
description BA_DMZ (Assigned to Po2 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
channel-group 2 mode active
!
interface GigabitEthernet0/15
description BA_DMZ (Assigned to Po2 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
duplex full
channel-group 2 mode active
!
interface GigabitEthernet0/16
description BA_DMZ (Assigned to Po2 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
channel-group 2 mode active
!
interface GigabitEthernet0/17
description BA_DMZ (Assigned to Po2 for SMG purpose)
switchport trunk allowed vlan 1
switchport mode trunk
speed 1000
channel-group 2 mode active
!
interface GigabitEthernet0/18
switchport mode access
duplex full
!
interface GigabitEthernet0/19
switchport mode access
duplex full
!
interface GigabitEthernet0/20
switchport mode access
shutdown
speed 100
duplex full
!
interface GigabitEthernet0/21
switchport mode access
media-type rj45
speed 100
duplex full
!
interface GigabitEthernet0/22
switchport access vlan 105
switchport mode access
shutdown
media-type rj45
speed 100
duplex full
!
interface GigabitEthernet0/23
switchport access vlan 105
switchport mode access
shutdown
media-type rj45
speed 100
duplex full
!
interface GigabitEthernet0/24
switchport trunk allowed vlan 99
switchport mode trunk
!
interface Vlan1
no ip address
no ip route-cache
!
interface Vlan99
ip address 10.x.x.x 255.255.255.0
no ip route-cache
!
no ip http server
ip tacacs source-interface Vlan99
logging 10.2.41.11
logging 10.1.24.81
logging 10.1.222.35
logging 10.2.8.144
access-list 10 permit 10.1.24.21
access-list 10 permit 10.1.26.27
access-list 10 permit 10.1.26.26
access-list 10 permit 10.25.2.26
access-list 10 permit 10.1.26.31
access-list 10 permit 10.2.41.11
access-list 10 permit 10.1.26.33
access-list 10 permit 10.1.26.32
access-list 10 permit 10.2.41.23
access-list 10 permit 10.2.40.24
access-list 10 permit 10.1.24.81
access-list 10 permit 10.1.222.35
access-list 10 deny any log
access-list 11 permit 10.2.41.11
access-list 11 permit 10.1.24.81
access-list 11 permit 10.2.8.144
access-list 11 permit 10.1.222.21
access-list 11 permit 10.1.222.20
access-list 11 permit 10.1.222.10
access-list 11 permit 10.1.222.35
access-list 11 deny any log
no cdp run
snmp-server community t3hz33b RO 11
snmp-server host 10.1.222.35 version 2c t3hz33b
snmp-server host 10.1.24.50 version 2c t3hz33b
snmp-server host 10.1.24.81 version 2c t3hz33b
snmp-server host 10.2.41.11 version 2c t3hz33b
snmp-server host 10.2.8.144 version 2c t3hz33b
tacacs-server host 10.2.8.133 key 7 08154D4205003142425D5C
tacacs-server host 10.1.160.15 key 7 08154D4205003142425D5C
tacacs-server directed-request
radius-server source-ports 1645-1646
!
control-plane
!
banner login ^C This network devi^C
!
line con 0
exec-timeout 15 0
logging synchronous
login authentication console-login
line vty 0 4
access-class 10 in
exec-timeout 15 0
logging synchronous
login authentication vty-login
line vty 5 15
access-class 10 in
exec-timeout 15 0
logging synchronous
login authentication vty-login
!
ntp authentication-key 1 md5 0034120D550E1F0721 7
ntp authenticate
ntp trusted-key 1
ntp clock-period 36029386
ntp server 10.1.222.100 key 1 source Vlan99 prefer
end
