IPV6_1.3.6.1.2.1.55.2.0.1 ipv6IfStateChange

Description

IPV6/2/IF_IPV6CHANGE:OID [oid] The status of the IPv6 Interface changed. (IfIndex=[INTEGER], IfDescr=[OCTET], IfOperStatus=[INTEGER], IfAdminStatus=[INTEGER])

The status of the IPv6 interface was changed.

Attribute

Alarm ID	Alarm Severity	Alarm Type
1.3.6.1.2.1.55.2.0.1	Major	communicationsAlarm(2)

Parameters

Name	Meaning
oid	Indicates the MIB object ID of the alarm.
IfIndex	Indicates the index of the interface.
IfDescr	Indicates the description of the interface.
IfOperStatus	Indicates the current operating status of the interface. The value can be: up(1), down(2), and testing(3). The value testing(3) indicates that the interface cannot forward any operational packets. If the value of ifAdminStatus is down(2), the value of ifOperStatus is also down(2). If the value of ifAdminStatus becomes up(1) and the interface can transmit and receive data, the value of ifOperStatus also becomes up(1). If an error that prevents the interface from going Up occurs, the value of ifOperStatus remains down(2). Currently, the value testing(3) is not supported.
IfAdminStatus	Indicates the desired status of the interface. The value can be: up(1), down(2), and testing(3). The value testing(3) indicates that the interface cannot forward any operational packets. When a managed system initializes, all interfaces start with ifAdminStatus in the down(2) state. As a result of either management or configuration, the value of ifAdminStatus is changed to either up(1) or testing(3), or remains down(2) if not changed. Currently, the value testing(3) is not supported.

Impact on the System

The influence depends on the ipv6IfOperStatus:

1) Up: indicates that the IPv6 services on the interface are recovered.

2) Down: indicates that the IPv6 services on the interface are interrupted.

Possible Causes

The protocol status on the interface became Down.
- Cause 1: The interface was damaged or the link was faulty.
- Cause 2: The interface was shut down.
- Cause 3: When the IPv6 protocol was Up, the undo ipv6 enable command was run.
- Cause 4: All the IPv6 addresses were deleted.
- Cause 5: When the IPv6 protocol was Up, the IPv6 function was disabled.
The interface protocol can become Up only when the following requirements are met synchronously.
- Cause 1: The interface and the link are normal.
- Cause 2: The undo shutdown command is run on the interface.
- Cause 3: The IPv6 function is enabled in the system view.
- Cause 4: The IPv6 forwarding function is enabled in the interface view.
- Cause 5: The IPv6 address is assigned.

Procedure

If the interface turned Up, this log message is informational only and no action is required.
If the protocol status of the interface becomes Down, do as follows to locate the fault or change the protocol status to Up.
1. Run the display ipv6 interface [ interface-type interface-number ] command to check whether the IPv6 address is assigned to the interface.
  - If so, go to Step b.
  - If not, go to Step c.
2. Check the "current state" field of the interface in the display ipv6 interface [ interface-type interface-number ] command output.
  - If it displays Down, check whether the shutdown command is run on the remote interface.
    - If so, run the undo shutdown command in the remote interface view and then repeat Step a and Step b.
    - If not, it indicates that the local interface is damaged or the link is faulty. You need to replace the interface module or the cable, and then repeat Step a and Step b.
  - If it displays Administratively Down, run the undo shutdown command in the interface view, and then repeat Step a and Step b.
  - If it displays Up and the IPv6 protocol status is Down, go to Step e.
  - If it displays Up and the IPv6 protocol status is Up, go to Step i.
3. Run the display this command in the interface view to check whether the ipv6 enable command is configured.
  - If so, go to Step d.
  - If not, configure the ipv6 enable command. Then, go to Step d.
4. Run the ipv6 address ipv6-address prefix-length in the interface view to assign the IPv6 address. Then, go to Step f.
5. Run the display this command in the system view to check whether the ipv6 command is configured.
  - If so, go to Step f.
  - If not, configure the ipv6 command in the system view. Then, go to Step f.
6. Run the display ipv6 interface [ interface-type interface-number | brief ] command to check the protocol status of the interface.
  - If the status is Down, go to Step g.
  - If the status is Up, go to Step h.
7. Collect alarm information and configuration information, and then contact technical support personnel.
8. End.

Related Information

None