04-26-2012 06:54 AM - edited 03-07-2019 06:21 AM
Im having this problem.
I have a connection between switches, There are a 3560 (Gi0/37) and a 2960 (Gi0/1), the problem is in the port Gi0/37 of the 3560 switch and this is the log
*Mar 2 06:44:57.519: %ILPOWER-7-DETECT: Interface Gi0/37: Power Device detected: IEEE PD
*Mar 2 06:44:58.576: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi0/37: PD removed
*Mar 2 06:44:59.633: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/37, changed state to down
*Mar 2 06:45:00.631: %LINK-3-UPDOWN: Interface GigabitEthernet0/37, changed state to down
*Mar 2 06:45:03.458: %LINK-3-UPDOWN: Interface GigabitEthernet0/37, changed state to up
*Mar 2 06:45:04.481: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/37, changed state to up
interface GigabitEthernet0/37
switchport access vlan 424
switchport mode access
end
interface GigabitEthernet0/1
switchport mode trunk
media-type rj45
end
*Mar 2 06:44:57.519: %ILPOWER-7-DETECT: Interface Gi0/37: Power Device detected: IEEE PD
*Mar 2 06:44:58.576: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi0/37: PD removed
*Mar 2 06:44:59.633: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/37, changed state to down
*Mar 2 06:45:00.631: %LINK-3-UPDOWN: Interface GigabitEthernet0/37, changed state to down
*Mar 2 06:45:03.458: %LINK-3-UPDOWN: Interface GigabitEthernet0/37, changed state to up
*Mar 2 06:45:04.481: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/37, changed state to up
The configuration in the ports:
------------3560---------------------
interface GigabitEthernet0/37
switchport access vlan 424
switchport mode access
end
-----------------2960-----------------------
interface GigabitEthernet0/1
switchport mode access
media-type rj45
end
I dont understand what is the problem, actually i have added the command power inline never on the port and the problem is solved, but we haven´t changed configuration and is the first time with the problem in years.
04-26-2012 05:37 PM
I think I know what the problem is.
I am suspecting you have a power-end-device connected to this switch and there's a PC connected to the power-end-device.
I am suspecting you have a cable issue.
Try the following on the 3560:
1. Command: test cable tdr int g 0/37;
2. Wait for about 10 seconds;
3. Command: test cable tdr int g0/37; and
4. Post the output.
04-27-2012 07:15 AM
I don`t understand where do you think i have a power-end-device connected??? In the 3560 or int he 2960 switch because the Gi0/37 port is the trunk connection to the 2960.
04-27-2012 10:50 PM
Look at your "sh log" output. It's showing here is something triggering the PoE.
If you say the end device isn't a PoE then this issue is now leaning towards a copper cabling issue.
Try the TDR procedure I've posted earlier.
Sent from Cisco Technical Support iPad App
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