RT- N66U Log Question

[dsring]

I noticed the following in my RT-N66U log. What does it mean?

May 2 04:18:13 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:13 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:15 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:15 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:17 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:17 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:19 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:19 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:21 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:21 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:23 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:23 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:25 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:25 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:27 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:27 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:29 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:29 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:31 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:31 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:33 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:33 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:35 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:35 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:37 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:37 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:39 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:39 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:41 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:41 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:43 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:43 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:45 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:45 kernel: br0: topology change detected, sending tcn bpdu\
May 2 04:18:47 kernel: br0: received tcn bpdu on port 2(eth1)\
May 2 04:18:47 kernel: br0: topology change detected, sending tcn bpdu\
}

 

[bill1228]

is port 2 (eth1) connected to a bridge? Need to know more about your configuration.
--bill

 

[dsring]

It is connected to a Realtek NIC that has been disabled. I believe the message may be related to Spanning Tree Protocol (STP). I am not sure that I need STP enabled. I have since disabled it in the router to see if the messages cease, and to see if it affects performance. Thanks.