Contents

IF-MIB· 1

About this MIB· 1

MIB file name· 1

Notifications· 1

linkDown· 1

linkUp· 2

 

 

IF-MIB

About this MIB

This MIB describes generic attributes for network interfaces.

MIB file name

rfc2863-if.mib

Notifications

linkDown

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.6.3.1.1.5.3	Link down.	Error	Major	1.3.6.1.6.3.1.1.5.4 (linkUp)	ON

 

Notification triggers

This notification is generated when the SNMPv2 entity, acting in an agent role, has detected that the ifOperStatus object for one of its communication links is about to enter the down state from some other state (but not from the notPresent state.  Other states refer to the values of the ifOperStatus variable.

Possible reasons are:

The physical link of the interface is down, and the link is disconnected.

The interface goes down at the data link layer.

The interface is shut down.

The interface is deleted.

System impact

The interface cannot forward packets correctly, and the services carried over the interface are interrupted.

Status control

ON

CLI: Use the snmp-agent trap enable standard linkdown command.

OFF

CLI: Use the undo snmp-agent trap enable standard linkdown command.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1 (ifIndex)	Index of an interface.	ifIndex	InterfaceIndex	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.7 (ifAdminStatus)	Administrative status of the interface.	ifIndex	INTEGER	up(1), down(2), testing(3)
1.3.6.1.2.1.2.2.1.8 (ifOperStatus)	Operational status of the interface.	ifIndex	INTEGER	up(1), down(2), testing(3), unknown(4), dormant(5), notPresent(6), lowerLayerDown(7)

 

Recommended action

To resolve this issue:

1.If this interface is deleted, no action is required.

2.Execute the display this command in interface view to identify whether the interfaces on both end are shut down. If the interfaces are shut down, execute the undo shutdown command in interface view to bring them up. Identify whether the interfaces have restored.

3.Execute the display interface [ interface-type [ interface-number ] ] command to view the interface state. If an interface is down at the data link layer, check the protocol down reason according to the data link layer protocol.

4.Identify whether the physical connection is normal (for example, whether the network cables or transceiver modules are firmly connected). If the physical connection is abnormal, correctly connect the interfaces. Identify whether the alarm is cleared.

5.If the issue persists, contact H3C Support.

linkUp

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.6.3.1.1.5.4	Link up.	Recovery	Warning	N/A (N/A)	ON

 

Notification triggers

This notification is generated when that the SNMPv2 entity, acting in an  agent role, has detected that the ifOperStatus object for one of its communication links left the down state and transitioned into some other state (but not into the notPresent state).  Other states refer to the values of the ifOperStatus variable.

Possible reasons are:

The undo shutdown command is executed on the interface.

The interface or link failure is resolved.

The physical state of the interface comes up.

The interface comes up at the data link layer.

The newly created interface can operate normally.

System impact

The interface can forward packets correctly.

Status control

ON

CLI: Use the snmp-agent trap enable standard linkup command.

OFF

CLI: Use the undo snmp-agent trap enable standard linkup command.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1 (ifIndex)	Index of an interface.	ifIndex	InterfaceIndex	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.7 (ifAdminStatus)	Administrative status of the interface.	ifIndex	INTEGER	up(1), down(2), testing(3)
1.3.6.1.2.1.2.2.1.8 (ifOperStatus)	Operational status of the interface.	ifIndex	INTEGER	up(1), down(2), testing(3), unknown(4), dormant(5), notPresent(6), lowerLayerDown(7)

 

Recommended action

No action is required.