05-10-2007 05:19 PM - edited 03-05-2019 04:00 PM
Hi, I got this error frequently in my Cisco Catalyst 3750 (occurred in several ports) and did not understand what to do.
Description: Interface GigabitEthernet1/0/19, changed state to up
Explanation: The interface hardware went either up or down.
Recommended Action: If the state change was unexpected, confirm the configuration settings\n\ for the interface.
Type: LINK-3-UPDOWN
We have several VLAN configured on it.
Please advice.
Regards,
Acung
05-10-2007 06:57 PM
Acung,
This simply means that your interface has gone up/down i,e fluctuating. This could happen due to interface configuration or loose cable connetcivity on the port.
What is connected at the other end. Do you loose conenctivity. Please paste the switch config.
-amit singh
05-10-2007 07:22 PM
One of them (error port) not connected to anywhere, the other connected to to the computer via patch panel. Nope, the connection is good.
Here is the configuration :
version 12.2
no service pad
service timestamps debug uptime
service timestamps log datetime
no service password-encryption
service sequence-numbers
!
hostname GMSI-SW01
!
enable secret xxx
!
no aaa new-model
clock timezone UTC 8
switch 1 provision ws-c3750g-24ts
ip subnet-zero
ip routing
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface GigabitEthernet1/0/1
description management interface
!
interface GigabitEthernet1/0/2
description server interface
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet1/0/3
description server interface
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet1/0/4
description server interface
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet1/0/5
description server interface
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet1/0/6
description server interface
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet1/0/7
description server interface
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet1/0/8
description server interface
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet1/0/9
description development
switchport access vlan 6
switchport mode access
!
interface GigabitEthernet1/0/10
description development
switchport access vlan 6
switchport mode access
!
interface GigabitEthernet1/0/11
description development
switchport access vlan 6
switchport mode access
!
interface GigabitEthernet1/0/12
description development
switchport access vlan 6
switchport mode access
!
interface GigabitEthernet1/0/13
description data_lt3
switchport access vlan 3
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/14
description data_lt3
switchport access vlan 3
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/15
description data_lt2
switchport access vlan 4
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/16
description data_lt2
switchport access vlan 4
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/17
description data_lt1
switchport access vlan 5
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/18
description data_lt1
switchport access vlan 5
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/19
description data_lt1
switchport access vlan 5
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/20
description data_lt1
switchport access vlan 5
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/21
!
interface GigabitEthernet1/0/22
!
interface GigabitEthernet1/0/23
!
interface GigabitEthernet1/0/24
!
interface GigabitEthernet1/0/25
!
interface GigabitEthernet1/0/26
!
interface GigabitEthernet1/0/27
!
interface GigabitEthernet1/0/28
!
05-10-2007 07:22 PM
interface Vlan1
ip address 192.168.128.1 255.255.255.0
!
interface Vlan2
ip address 192.168.129.1 255.255.255.0
ip helper-address 192.168.129.11
ip helper-address 192.168.129.12
!
interface Vlan3
description data_lt3
ip address 192.168.130.1 255.255.255.0
ip helper-address 192.168.129.11
ip helper-address 192.168.129.12
ip helper-address 192.168.130.11
!
interface Vlan4
ip address 192.168.131.1 255.255.255.0
ip helper-address 192.168.129.11
ip helper-address 192.168.129.12
ip helper-address 192.168.130.11
!
interface Vlan5
ip address 192.168.132.1 255.255.255.0
ip helper-address 192.168.129.11
ip helper-address 192.168.129.12
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.129.10
ip http server
!
snmp-server community xxxxx RO
!
control-plane
!
!
ntp clock-period 36029249
ntp server 192.168.129.11 key 0 prefer
!
end
Please advice.
Regards,
Acung
05-10-2007 07:39 PM
Acung,
Why you have configured the switch ports as access to vlan 5 and also the trunk port.
nterface GigabitEthernet1/0/19
description data_lt1
switchport access vlan 5
switchport trunk encapsulation dot1q
switchport mode trunk
Please remove the access vlan config from the trunk ports. Configure the ports as following:
interface GigabitEthernet1/0/19
description data_lt1
switchport trunk encapsulation dot1q
switchport mode trunk
Please see the link below for managing the NIC issues :
http://www.cisco.com/warp/public/473/46.html#maintain
HTH,Please rate if it does.
-amit singh
05-10-2007 08:22 PM
It's configured that way because that port connected to other switch (previously) and now connected to the computer directly.
That's the reason why the error logged?
How about port 4 & 8 ? The error logged for those ports as well.
Please advice.
Regards,
Acung
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