ARP_1.3.6.1.4.1.2011.5.25.123.2.4 hwEthernetARPThresholdExceedAlarm

Trap Buffer Description

The number of ARP entries exceeded the threshold. (entPhysicalIndex=[entPhysicalIndex], Slot name=[slotname], Threshold=[Threshold], Number of dynamic ARP entries=[DynEntries], Number of static ARP entries=[StatEntries])

The number of ARP entries exceeds the upper threshold.

Trap Attributes

Trap Attribute	Description
Alarm or Event	Alarm
Trap Severity	Warning
Mnemonic Code	hwethernetarpthresholdexceedalarm
Trap OID	1.3.6.1.4.1.2011.5.25.123.2.4
MIB	HUAWEI-ETHARP-MIB
Alarm ID	0x0859200b
Alarm Name	hwEthernetARPThresholdExceedAlarm
Alarm Type	qualityOfServiceAlarm
Raise or Clear	Raise
Match trap	ARP_1.3.6.1.4.1.2011.5.25.123.2.5 hwEthernetARPThresholdResumeAlarm

Trap Buffer Parameters

Parameter	Description
entPhysicalIndex	Indicates the index of the physical entity.
slotname	Indicates the board name.
Threshold	Indicates the alarm threshold.
DynEntries	Indicates the number of dynamic ARP entries.
StatEntries	Indicates the number of static ARP entries.

VB Parameters

VB OID	VB Name	VB Index
1.3.6.1.2.1.47.1.1.1.1.7	entPhysicalName	entPhysicalIndex
1.3.6.1.4.1.2011.5.25.123.1.26.1	hwEthernetARPThresholdValue	-
1.3.6.1.4.1.2011.5.25.123.1.26.2	hwEthernetARPThresholdDynamicNumber	-
1.3.6.1.4.1.2011.5.25.123.1.26.3	hwEthernetARPThresholdStaticNumber	-

Impact on the System

If this alarm is displayed, the number of ARP entries on the device is great.

If the number continuously increases, system resources become insufficient and no new ARP entries can be learned.

As a result, service interruption may occur.

After the alarm is generated, do not power off or reset the device; otherwise, resources will be reassigned, and services will be affected.

Possible Causes

The number of ARP entries on the device exceeded the upper threshold.

Procedure

1. Run the display arp statistics command to view ARP entry statistics on the device and check whether there are more static ARP entries or dynamic ARP entries.

If there are more dynamic ARP entries, go to Step 2.
If there are more static ARP entries, go to Step 3.

2. Run the display arp all command to identify the interface that has more ARP entries. Then run the display arp interface command to check ARP entries on the interface and determine whether these ARP entries are necessary for the interface.

If these ARP entries are necessary, go to Step 5.
If these ARP entries are not necessary, run the reset arp command to delete certain ARP entries (without system running being affected) and go to Step 4.

3. Run the display current-configuration command to view static ARP entries and check whether these static ARP entries are necessary.

If these static ARP entries are necessary, go to Step 5.
If these static ARP entries are not necessary,run the undo arp static command to delete certain static ARP entries (without system running being affected) or run the reset arp static command to clear all static ARP entries. Then go to Step 4.

4. Run the display arp statistics command to check whether the number of ARP entries still continuously increases unexpectedly.

If the number of ARP entries does not continuously increase unexpectedly, go to Step 6.
If the number of ARP entries still continuously increases unexpectedly, go to Step 5.

5. Collect the alarm information, log information, and configuration information, and contact Huawei technical support engineers.

6. End.