: %LINEPROTO-5-UPDOWN: Line protocol on Interface

Unanswered Question
Oct 17th, 2007

Hello,

On 2950 with version c2950-i6q4l2-tar.121-22.EA10a.tar, I have got follow messages :

Oct 12 13:47:03.971: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/29, changed state to down

Oct 12 13:47:05.971: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/29, changed state to up

Oct 12 13:51:41.957: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/34, changed state to down

Oct 12 13:51:46.169: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/34, changed state to up

Oct 12 13:52:36.828: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/34, changed state to down

Oct 12 13:52:38.836: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/34, changed state to up

Oct 13 06:11:00.154: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to down

Oct 13 06:11:02.174: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to up

Oct 13 06:11:27.218: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to down

Oct 13 06:11:29.226: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to up

Oct 15 23:19:46.948: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to down

Oct 15 23:19:48.960: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to up

Oct 15 23:20:12.772: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to down

Oct 15 23:20:14.772: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to up

We have changed cables, switch but the behaviours occur.

All ideas are welcome.

Best regards.

I have this problem too.
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ankbhasi Wed, 10/17/2007 - 00:28

Hi Friend,

Can you confirm what is connected to fa0/29,34 and 38 interfaces? Only these interfaces flap or any other interfaces also?

Can you also update "sh run interface fa0/29" from your switch?

Regards,

Ankur

DWAM_2 Wed, 10/17/2007 - 01:29

Hello,

Thank you for you answer.

It takes on random interfaces.

We have changed the switch and behaviours occur again.

I have upgraded the version to the last.

On the older switch, it affects the giga interface :

Oct 10 06:14:40.498: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to down Oct 10 06:14:43.806: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up

This interface is connected to another switch (backbone switch !)

The show run for this interface is :

interface FastEthernet0/29

switchport access vlan 5

switchport mode access

spanning-tree portfast

spanning-tree bpduguard enable

!

Thank you

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Posted October 17, 2007 at 12:13 AM
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