Contents

HH3C-LPBKDT-MIB· 1

About this MIB· 1

MIB file name· 1

Notifications· 1

hh3cLpbkdtTrapLoopbacked· 1

hh3cLpbkdtTrapRecovered· 2

hh3cLpbkdtTrapPerVlanLoopbacked· 3

hh3cLpbkdtTrapPerVlanRecovered· 4

hh3cLpbkdtTrapVsiLoopbacked· 4

hh3cLpbkdtTrapVsiRecovered· 5

hh3cLpbkdtTrapActionLOG·· 6

hh3cLpbkdtTrapActionLOGClear 7

hh3cLpbkdtTrapActionBlock· 8

hh3cLpbkdtTrapActionBlockClear 9

hh3cLpbkdtTrapActionDown· 10

hh3cLpbkdtTrapVsiBlockFailed· 10

 

 

HH3C-LPBKDT-MIB

About this MIB

The loop detection mechanism performs periodic checking for Layer 2 loops and processes the interfaces with loops as configured.

Use this MIB to perform the following tasks:

● Generate traps when the loop state of an interface changes.

● Configure and view the loop detection state, loop protection action, and loop detection interval for VLANs globally.

● Configure and view the loop detection state, loop protection action, and loop detection interval for VLANs on an interface.

MIB file name

hh3c-lpbkdt.mib

Notifications

hh3cLpbkdtTrapLoopbacked

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.1	A loop occurs on a port	Error	Warning	1.3.6.1.4.1.25506.2.95.1.0.2 (hh3cLpbkdtTrapRecovered)	ON

 

Notification triggers

This notification is generated when the device receives loop detection frames sent by the device itself.

System impact

If you do not remove loops, the broadcast storm caused by loops might cause network congestion or even cause the network to break down.

After loops are removed, the system impact varies by the following loop detection actions:

Block—Disables the interface from learning MAC addresses and blocks the interface.

No-learning—Disables the interface from learning MAC addresses.

Shutdown—Shuts down the interface to disable it from receiving and sending any frames.

VLAN-block—Blocks traffic of the protected VLAN where the loop is detected on the interface.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2 (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING (0..255)

 

Recommended action

To resolve this issue:

1.Check whether a Layer 2 loop occurs on the interface.

2.Change the network physical topology to remove the Layer 2 loop.

3.If the issue persists, collect alarm information and configuration data, and then contact H3C Support for help.

hh3cLpbkdtTrapRecovered

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.1	A loop is removed from a port	Recovery	Warning	-	ON

 

Notification triggers

This notification is generated when the device does not receive a loop detection frame within the loop detection interval.

System impact

The interface is restored to the normal forwarding state and the interface services are recovered.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2 (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING (0..255)

 

Recommended action

Check for a loop on the network.

hh3cLpbkdtTrapPerVlanLoopbacked

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.3	A loop occurs on a port in a specific VLAN.	Error	Warning	1.3.6.1.4.1.25506.2.95.1.0.4 (hh3cLpbkdtTrapPerVlanRecovered)	ON

 

Notification triggers

This notification is generated when the device receives loop detection frames sent by the device itself in a specific VLAN.

System impact

If you do not remove loops, the broadcast storm caused by loops might cause network congestion or even cause the network to break down.

After loops are removed, the system impact varies by the following loop detection actions:

Block—Disables the interface from learning MAC addresses and blocks the interface.

No-learning—Disables the interface from learning MAC addresses.

Shutdown—Shuts down the interface to disable it from receiving and sending any frames.

VLAN-block—Blocks traffic of the protected VLAN where the loop is detected on the interface.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2  (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING (0..255)
1.3.6.1.4.1.25506.2.95.2.1 (hh3cLpbkdtVlanID)	VLAN in which a loop occurs	N/A	Integer32	Integer32 (1..4094)

 

Recommended action

To resolve this issue:

1.Check whether a Layer 2 loop occurs on the interface.

2.Change the network physical topology to remove the Layer 2 loop.

3.If the issue persists, collect alarm information and configuration data, and then contact H3C Support for help.

hh3cLpbkdtTrapPerVlanRecovered

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.4	A loop is removed from a port	Recovery	Warning	-	ON

 

Notification triggers

This notification is generated when the device does not receive a loop detection frame in a specific VLAN within the loop detection interval.

System impact

The interface is restored to the normal forwarding state in the VLAN and the VLAN services are recovered.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2  (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING (0..255)
1.3.6.1.4.1.25506.2.95.2.1 (hh3cLpbkdtVlanID)	VLAN in which a loop is removed	N/A	Integer32	Integer32 (1..4094)

 

Recommended action

No action is required.

hh3cLpbkdtTrapVsiLoopbacked

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.5	A loop occurred on an AC interface	Error	Warning	1.3.6.1.4.1.25506.2.95.1.0.6 (hh3cLpbkdtTrapVsiRecovered)	ON

 

Notification triggers

This notification is generated when an AC receives a loop detection frame that carries the AC's VXLAN ID.

System impact

If you do not remove loops, the broadcast storm caused by loops might cause network congestion or even cause the network to break down.

After loops are removed, the system impact varies by the following loop detection actions:

Block—Disables the AC from learning MAC addresses and blocks the AC.

Shutdown—Shuts down the interface where the AC resides to disable it from receiving and sending any frames.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.4.1.25506.2.95.1.1.1  (hh3cLpbkdtVsiName)	VSI name	N/A	OCTET STRING	OCTET STRING (0..255)
1.3.6.1.4.1.25506.2.95.1.1.2  (hh3cLpbkdtSVlanID)	Outer VLAN ID	N/A	Integer32	Integer32 (1..4094)
1.3.6.1.4.1.25506.2.95.1.1.3  (hh3cLpbkdtCVlanID)	Inner VLAN ID	N/A	Integer32	Integer32 (1..4094)
1.3.6.1.4.1.25506.2.95.1.1.4 (hh3cLpbkdtACName)	AC name	N/A	OCTET STRING	OCTET STRING (0..255)

 

Recommended action

To resolve this issue:

1.Check whether a Layer 2 loop occurs on the interface where the AC resides.

2.Change the network physical topology to remove the Layer 2 loop.

3.If the issue persists, collect alarm information and configuration data, and then contact H3C Support for help.

hh3cLpbkdtTrapVsiRecovered

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.6	Loops are removed from an AC.	Recovery	Warning	-	ON

 

Notification triggers

This notification is generated when an AC does not receive a loop detection frame that carries the AC's VXLAN ID within the loop detection interval.

System impact

The AC is restored to the normal forwarding state and the AC services are recovered.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.4.1.25506.2.95.1.1.1  (hh3cLpbkdtVsiName)	VSI name	N/A	OCTET STRING	OCTET STRING (0..255)
1.3.6.1.4.1.25506.2.95.1.1.4 (hh3cLpbkdtACName)	AC name	N/A	OCTET STRING	OCTET STRING (0..255)

 

Recommended action

No action is required.

hh3cLpbkdtTrapActionLOG

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.7	A loop occurs on an interface and a log message is generated.	Error	Warning	1.3.6.1.4.1.25506.2.95.1.0.8 (hh3cLpbkdtTrapActionLOGClear)	ON

 

Notification triggers

This notification is generated when the interface is in loopback state and the processing action uses the default.

System impact

If you do not remove loops, the broadcast storm caused by loops might cause network congestion or even cause the network to break down.

After loops are removed, the system impact varies by the following loop detection actions:

Block—Disables the interface from learning MAC addresses and blocks the interface.

No-learning—Disables the interface from learning MAC addresses.

Shutdown—Shuts down the interface to disable it from receiving and sending any frames.

VLAN-block—Blocks traffic of the protected VLAN where the loop is detected on the interface.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2 (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING（0..255）

 

Recommended action

To resolve this issue:

1.Check whether a Layer 2 loop occurs on the interface.

2.Change the network physical topology to remove the Layer 2 loop.

3.If the issue persists, collect alarm information and configuration data, and then contact H3C Support for help.

hh3cLpbkdtTrapActionLOGClear

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.8	A loop is removed or the processing action is changed and a log message is generated.	Recovery	Warning	-	ON

 

Notification triggers

This notification is generated when the loop is removed or the processing action is changed.

System impact

When loops are removed, services are recovered on the interface where loops occur.

After loops are removed, the system impact varies by the following loop detection actions:

Block—Disables the interface from learning MAC addresses and blocks the interface.

No-learning—Disables the interface from learning MAC addresses.

Shutdown—Shuts down the interface to disable it from receiving and sending any frames.

VLAN-block—Blocks traffic of the protected VLAN where the loop is detected on the interface.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2 (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING（0..255）

 

Recommended action

No action is required.

hh3cLpbkdtTrapActionBlock

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.9	A loop occurs on an interface and the processing action is block	Error	Warning	1.3.6.1.4.1.25506.2.95.1.0.10 (hh3cLpbkdtTrapActionBlockClear)	ON

 

Notification triggers

This notification is generated when the device receives loop detection frames sent by the device itself and the processing action is block.

System impact

A loop occurs on an interface in a VLAN, and the interface is blocked.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2 (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING（0..255）

 

Recommended action

To resolve this issue:

1.Check whether a Layer 2 loop occurs on the interface.

2.Change the network physical topology to remove the Layer 2 loop.

3.If the issue persists, collect alarm information and configuration data, and then contact H3C Support for help.

hh3cLpbkdtTrapActionBlockClear

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.10	The blocked interface is restored to the normal forwarding state.	Recovery	Warning	-	ON

 

Notification triggers

The loop is considered removed if no loop detection packets are received on the blocked interface within three loop detection intervals.

System impact

The interface is restored to the normal forwarding state and the interface services are recovered.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2 (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING（0..255）

 

Recommended action

No action is required.

hh3cLpbkdtTrapActionDown

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.12	The shutdown interface is restored	Recovery	Warning	-	ON

 

Notification triggers

After the interface where a loop occurs is shut down, the interface is restored after the interval configured by using the shutdown-interval command.

System impact

The interface is restored to the normal forwarding state. If the loop still exists on the interface, the interface will be shut down and then restored repeatedly until the loop is removed.

Status control

This notification cannot be turned off.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2 (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING（0..255）

 

Recommended action

To resolve this issue:

● If the interface is shut down after it is restored, perform the following tasks:

Check whether a Layer 2 loop occurs on the interface.

Change the network physical topology to remove the Layer 2 loop.

If the issue persists, collect alarm information and configuration data, and then contact H3C Support for help.

● If the interface is not shut down after it is restored, no action is required.

hh3cLpbkdtTrapVsiBlockFailed

Basic information

OID	Event	Type	Severity	Recovery notification	Default status
1.3.6.1.4.1.25506.2.95.1.0.13	The device fails to block the AC.	Error	Warning	N/A (N/A)	ON

 

Notification triggers

After the loop detection protection action is triggered, the AC fails to be blocked, and the device fails to block the AC.

System impact

The loop cannot be removed.

Status control

This notification cannot be disabled.

Object

OID (object name)	Description	Index	Type	Value range
1.3.6.1.2.1.2.2.1.1  (ifIndex)	Interface index	ifIndex	Integer32	Integer32 (1..2147483647)
1.3.6.1.2.1.2.2.1.2  (ifDescr)	Interface name	ifIndex	OCTET STRING	OCTET STRING（0..255）
1.3.6.1.4.1.25506.2.95.1.1.1  (hh3cLpbkdtVsiName)	VSI name	N/A	OCTET STRING	OCTET STRING（0..255）
1.3.6.1.4.1.25506.2.95.1.1.5 (hh3cLpbkdtSrvID)	Ethernet service instance ID	N/A	Integer32	Integer32 (1..4096)

 

Recommended action

To resolve this issue:

● Manually shut down the AC-associated interface where a loop is detected.

● Change the loop detection action in the AC-associated VSI to Shutdown.