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Alarm Handling

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document provides the explanations, causes, and recommended actions of alarms on the product.
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DHCPSNP_1.3.6.1.4.1.2011.5.25.112.2.5 hwNomatchSnpBindTblDhcpPktAlarm

DHCPSNP_1.3.6.1.4.1.2011.5.25.112.2.5 hwNomatchSnpBindTblDhcpPktAlarm

Description

The number of the discarded DHCP request packets that did not match the binding table exceeded the threshold on the interface. (IfIndex=[IfIndex], VlanIndex=[VlanIndex], VsiIndex=[VsiIndex], Interface=[IfName], VlanID=[VlanId], DiscardedNumber=[DiscardPktAccount])

The number of discarded DHCP request packets that do not match any entry in the DHCP snooping binding table exceeded the threshold on the interface.

Attributes

Attribute

Description

Alarm or Event

Event

Trap Severity

Warning

Mnemonic Code

hwNomatchSnpBindTblDhcpPktAlarm

Trap OID

1.3.6.1.4.1.2011.5.25.112.2.5

Alarm ID

This is an event trap and does not involve alarm ID.

Alarm Type

This is an event trap and does not involve alarm type.

Raise or Clear

This is an event trap and does not involve alarm generation or clearance.

Match trap

This is an event trap and does not involve the matching trap.

Parameters

Parameter

Description

IfIndex

Interface index

VlanIndex

VLAN index

VsiIndex

VSI index

Interface

Interface name

VlanID

VLAN ID

DiscardedNumber

Number of discarded DHCP packets

VB

VB OID

VB Name

VB Index

1.3.6.1.4.1.2011.5.25.112.1.15.1.1

hwDhcpSnpStatisticIfDescr

hwDhcpSnpIfIndex;

hwDhcpSnpVlanIndex;

hwDhcpSnpVsiIndex;

1.3.6.1.4.1.2011.5.25.112.1.15.1.2

hwDhcpSnpStatisticVlanId

hwDhcpSnpIfIndex;

hwDhcpSnpVlanIndex;

hwDhcpSnpVsiIndex;

1.3.6.1.4.1.2011.5.25.112.1.15.1.6

hwNomatchSnpBindTblDhcpPktNum

hwDhcpSnpIfIndex;

hwDhcpSnpVlanIndex;

hwDhcpSnpVsiIndex;

Impact on the System

This alarm has no adverse impacts on the system, because invalid DHCP request packets are discarded.

Possible Causes

Attackers disguised as authorized clients to communicate with DHCP servers.

Procedure

  • Collect log files and contact technical support personnel.
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Updated: 2019-04-02

Document ID: EDOC1100074754

Views: 22810

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