[c-nsp] Host xxxx.xxxx.xxxx in vlan x is flapping between port Po1 and port Gi0/1

[Farooq Razzaque]

Hi All
 
I noticed the following messages with different timestamp on IPT SW01 (connected to IPT servers - C2960G-24TC-L)


 
%SW_MATM-4-MACFLAP_NOTIF: Host 001c.f6e5.17b0 in vlan 119 is flapping between port Po1 and port Gi0/1
 
Here :
 
1) Gi0/1 is connected to Voice Gateway router
 
interface GigabitEthernet0/0 (Connected to IPT SW02 - Gi0/1)
 no ip address
 duplex auto
 speed auto
 media-type rj45
 bridge-group 1
!
interface GigabitEthernet0/1  (Connected to IPT SW01 - Gi0/1)
 no ip address
 duplex auto
 speed auto
 media-type rj45
 bridge-group 1
 
interface BVI1
 ip address xxxxx
 ntp broadcast client
 ntp broadcast
 h323-gateway voip interface
 h323-gateway voip bind srcaddr xxxxx
 
2) Mac-address 001c.f6e5.17b0 is the address of interface Gi0/0 of Voice Gateway Router and same address for BVI1
 
GigabitEthernet0/0 is up, line protocol is up 
  Hardware is BCM1125 Internal MAC, address is 001c.f6e5.17b0 (bia 001c.f6e5.17b0)
 
GigabitEthernet0/1 is up, line protocol is up 
  Hardware is BCM1125 Internal MAC, address is 001c.f6e5.17b1 (bia 001c.f6e5.17b1)
 
BVI1 is up, line protocol is up 
  Hardware is BVI, address is 001c.f6e5.17b0 (bia 001c.f6e5.17b0)
 
3) Po1 is the port channel on IPT SW01 (Gi0/22 and Gi0/23) and Core switch (VSS)
 
 
interface GigabitEthernet0/22
description ++++ L2 Trunk to Coreswitch ++++
 switchport trunk native vlan 999
 switchport trunk allowed vlan 119
 switchport mode trunk
 logging event trunk-status
 logging event bundle-status
 channel-protocol lacp
 channel-group 1 mode active
!
interface GigabitEthernet0/23
description ++++ L2 Trunk to Coreswitch ++++
 switchport trunk native vlan 999
 switchport trunk allowed vlan 119
 switchport mode trunk
 logging event trunk-status
 logging event bundle-status
 channel-protocol lacp
 channel-group 1 mode active
 
Appreciate your help