03-19-2010 08:57 AM - edited 03-06-2019 10:13 AM
I am getting this error frequently on a 6509 switch:
"
(enable) 2010 Mar 19 08:20:02 PDT -07:00 %ETHC-5-PORTFROMSTP:Port 9/42 left bridge port 9/42
2010 Mar 19 08:20:03 PDT -07:00 %DTP-5-AUXVLANPORTOFF:Auxiliary vlan removed on port 9/42
2010 Mar 19 08:20:55 PDT -07:00 %DTP-5-AUXVLANPORTON:Auxiliary vlan added on port 9/42
2010 Mar 19 08:21:10 PDT -07:00 %ETHC-5-PORTTOSTP:Port 9/42 joined bridge port 9/42
2010 Mar 19 08:22:07 PDT -07:00 %ETHC-5-PORTFROMSTP:Port 9/42 left bridge port 9/42
2010 Mar 19 08:22:07 PDT -07:00 %DTP-5-AUXVLANPORTOFF:Auxiliary vlan removed on port 9/42
2010 Mar 19 08:22:15 PDT -07:00 %DTP-5-AUXVLANPORTON:Auxiliary vlan added on port 9/42
2010 Mar 19 08:22:30 PDT -07:00 %ETHC-5-PORTTOSTP:Port 9/42 joined bridge port 9/42
(enable) 2010 Mar 19 08:30:54 PDT -07:00 %ETHC-5-PORTFROMSTP:Port 9/42 left bridge port 9/42
2010 Mar 19 08:30:54 PDT -07:00 %DTP-5-AUXVLANPORTOFF:Auxiliary vlan removed on port 9/42
2010 Mar 19 08:30:56 PDT -07:00 %DTP-5-AUXVLANPORTON:Auxiliary vlan added on port 9/42
2010 Mar 19 08:31:11 PDT -07:00 %ETHC-5-PORTTOSTP:Port 9/42 joined bridge port 9/42"
The error is reccuring almost every 5 minites.
Any idea of what is causing it and how I should fixe it?
Thanks
03-19-2010 09:46 AM
Hello,
the connection is not stable.
This kind of messages appear on CatOS when a port flaps the key are the messages like
joined bridge
left bridge
there are other messages because a Voice vlan (auxilairy vlan) is configured for the port.
What is connected on this port?
Hope to help
Giuseppe
03-19-2010 10:06 AM
Giuseppe:
The VoiP phone are connected to the ports and the PCs are trunked to the phones ports. So, yes, the auxilliary vlans are configured one these ports.
So what should I do? Reseat the modules?
Thanks.
03-20-2010 09:00 AM
Giuseppe:
The VoiP phone are connected to the ports and the PCs are trunked to the phones ports. So, yes, the auxilliary vlans are configured one these ports.
So what should I do? Reseat the modules?
Thanks.
Hi,
The switch generates %ETHC-5-PORTTOSTP syslog message, whenever a link is detected on a switch port and the %ETHC-5-PORTFROMSTP syslog message can occur whenever a link is lost on a switch port.These syslogs are normal informational messages that indicate that a port was removed from or added to the spanning tree.
Note that channeling does not have to be enabled in order for these messages to be generated.
A high number of these messages is an indication that a port loses a link due to a mis-configuration or a connection issue.
Check out the below link for more information about the error message.
Hope to Help !!
Ganesh.H
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