Hi, The switch found the traffic from the specified host flapping between the specified ports. [enet] is the host MAC address, [chars] [dec] is the switch ID, the first and second [chars] are the ports between which the host traffic is flapping.
Recommended Action: Check the network switches for misconfigurations that might cause a data-forwarding loop. http://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi?action=search&index=all&locale=en&query=SW_MATM-4-MACFLAP_NOTIF&counter=0&paging=5&links=reference&sa=Submit http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a0080136673.shtml Best regards, Andras On Sun, Aug 7, 2011 at 7:14 PM, Farooq Razzaque <[email protected]> wrote: > > > 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 > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
