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glbp causing mac flap

mickyq
Level 1
Level 1

%SW_MATM-4-MACFLAP_NOTIF: Host 0007.b400.0101 in vlan 530 is flapping between port Te0/1 and port Te0/2

 %SW_MATM-4-MACFLAP_NOTIF: Host 0007.b400.0102 in vlan 530 is flapping between port Te0/2 and port Te0/1

 

the host mac is the mac address of the glbp group for this vlan

whats causing this?

 

 

Vlan530 - Group 1
  State is Active
    111 state changes, last state change 00:05:50
  Virtual IP address is 10.71.63.1
  Hello time 300 msec, hold time 900 msec
    Next hello sent in 0.320 secs
  Redirect time 600 sec, forwarder time-out 14400 sec
  Preemption enabled, min delay 0 sec
  Active is local
  Standby is unknown
  Priority 100 (default)
  Weighting 100 (default 100), thresholds: lower 1, upper 100
  Load balancing: round-robin
  Group members:
    0022.914e.0400 (10.71.63.2) local
  There are 2 forwarders (2 active)
  Forwarder 1
    State is Active
      95 state changes, last state change 00:05:50
    MAC address is 0007.b400.0101 (learnt)
    Owner ID is 0024.5102.2c00
    Redirection enabled, 249.024 sec remaining (maximum 600 sec)
    Time to live: 14049.024 sec (maximum 14400 sec)
    Preemption enabled, min delay 30 sec
    Active is local, weighting 100
    Arp replies sent: 33015
  Forwarder 2
    State is Active
      3 state changes, last state change 00:11:27
    MAC address is 0007.b400.0102 (default)
    Owner ID is 0022.914e.0400
    Redirection enabled
    Preemption enabled, min delay 30 sec
    Active is local, weighting 100

 

 

 

thanks

 

1 Reply 1

swillet41
Level 1
Level 1

I have a similar issue but my flapping is on 2960-48TC switch.  Did you ever find a solution?

Thanks,

Scott