We have a (standard) setup where we have 2 distribution layer switches interconnected with a L3 link and an access switch uplinked to both DL's. We run GLBP on the DL's for the VLANs hosted on the access switch. This works fine, but we get HOSTFLAPPING errors on the access switch related to GLBP MAC addressed (MAC Address of the Active AVG). I don't think this is a problem, but the error messages are filling up the logs.. any advice or suggestions?
error on the access-switch (gi1/3 and 2/3 are the uplinks):
2246717: Mar 3 08:41:47 GMT: %C4K_EBM-4-HOSTFLAPPING: Host 00:1C:F6:AA:00:00 in vlan 112 is flapping between port Gi2/3 and port Gi1/3
show glbp output of first distribution switch:
Vlan112 - Group 112
State is Active
5 state changes, last state change 13w1d
Virtual IP address is 10.116.12.1
Hello time 250 msec, hold time 750 msec
Next hello sent in 0.218 secs
Redirect time 600 sec, forwarder time-out 14400 sec
Preemption enabled, min delay 300 sec
Active is local
Standby is 10.116.12.3, priority 100 (expires in 0.638 sec)
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