03-24-2010 11:10 PM - edited 03-06-2019 10:18 AM
Hi,
I have an a switch 3560 with IOS c3560-ipbase-mz.122-35 where from port fa 0/1 until port fa 0/22 thera are connected
22 AP Cisco 1242.
On this ports I have configured only "switchport access vlan 3", which is vlan for wi-fi.
Yesterday, for each of this ports I have found:
switchport nonegotiate
switchport mode trunk
switchport trunk encapsulation dot1q
mls qos trust cos
auto qos voip trust
spanning-tree bpduguard enable
and was impossible reach AP and my guest could not surf on Internet.
What can be happen ?
Why did switch change configuration ?
Best regards
Lorenzo
03-25-2010 11:04 AM
Hello Lorenzo,
have you deployed autoQoS recently?
but I would not expect a change of switchport mode.
one possibility is: someone applied a wrong interface range in an attempt to configure some ports as trunk that included these ports
if the device is under TACACS+ you can check the commands applied to the switch to verify if commands have been added in some way.
Hope to help
Giuseppe
03-25-2010 11:39 AM
Thank you Giuseppe
with your answer I have understood
that's impossible to change configurations itself.
best regards
Lorenzo
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