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Alarm Handling

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of alarms on the product.
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SECE_1.3.6.1.4.1.2011.5.25.165.2.2.2.2 hwARPSEntryCheck

SECE_1.3.6.1.4.1.2011.5.25.165.2.2.2.2 hwARPSEntryCheck

Description

SECE/4/ARP_ENTRY_CHECK:OID [oid] Arp entry attack.(SourceInterface=[OCTET], SourceIP=[OCTET], SourceMAC=[OCTET], OuterVlan=[INTEGER], InnerVlan=[INTEGER])

The system detected attack packets used to modify ARP entries.

Attribute

Alarm ID Alarm Severity Alarm Type
1.3.6.1.4.1.2011.5.25.165.2.2.2.2 Warning equipmentAlarm(5)

Parameters

Name Meaning
OID Indicates the ID of the MIB object.
SourceInterface Indicates the source interface of packets.
SourceIP Indicates the source IP address of packets.
SourceMAC Indicates the source MAC address of packets.

OuterVlan

Indicates the outer VLAN ID of packets.

InnerVlan

Indicates the inner VLAN ID of packets.

Impact on the System

If this alarm is generated, ARP entries on the device may be changed to ARP entries of attackers. As a result, user traffic is intercepted by attackers and user services are interrupted.

Possible Causes

The device was attacked by packets used to modify ARP entries.

Procedure

  1. Find the interface where attacks occur according to the value of SourceInterface.
  2. Check whether users who are not in the DHCP snooping binding table range are connected to the interface.
  3. If new users are connected, run related DHCP snooping commands to generate the DHCP snooping binding table. Find the interface where the gateway conflict occurs according to the value of SourceInterface.

Related Information

None

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Updated: 2019-08-21

Document ID: EDOC1000142054

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