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Alarm Handling

CloudEngine 12800 and 12800E V200R005C00

This document provides the explanations, causes, and recommended actions of alarms on the product.
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ARP_1.3.6.1.4.1.2011.5.25.123.2.7 hwEthernetARPMACIPConflict

ARP_1.3.6.1.4.1.2011.5.25.123.2.7 hwEthernetARPMACIPConflict

Description

MAC and IP address conflict. (Conflict interface=[LogicIfName], Conflict MAC address=[ConflictMAC], Conflict IP address=[ConflictIP], Received packet's destination MAC address=[DstMAC], Received packet's destination IP address=[DstIP], Received packet's VLAN=[Vlan], Received packet's CE-VLAN=[Cevlan], Input interface=[PhyIfName])

The source IP and MAC addresses of ARP packets received by the interface were the same as those of the interface.

Attributes

Attribute

Description

Alarm or Event

Alarm

Trap Severity

Critical

Mnemonic Code

hwEthernetARPMACIPConflict

Trap OID

1.3.6.1.4.1.2011.5.25.123.2.7

Alarm ID

0x08590002

Alarm Type

environmentalAlarm

Raise or Clear

Raise

Match trap

ARP_1.3.6.1.4.1.2011.5.25.123.2.8 hwEthernetARPMACIPConflictResolved

Parameters

Parameter Description

Conflict interface

Name of the conflict interface where the conflict is detected

Conflict MAC address

Source MAC addresses of the received ARP packets

Conflict IP address

Source IP addresses of the received ARP packets

Received packet's destination MAC address

Destination MAC addresses of the received ARP packets

Received packet's destination IP address

Destination IP addresses of the received ARP packets

Received packet's VLAN

Outer vlan tag of the received ARP packets

Received packet's CE-VLAN

Inner vlan tag of the received ARP packets

Input interface

Interface that receives ARP packets

VB

VB OID

VB Name

VB Index

1.3.6.1.4.1.2011.5.25.123.1.28.2

hwEthernetARPIPConflictLocalInterfaceName

None

1.3.6.1.4.1.2011.5.25.123.1.28.7

hwEthernetARPIPConflictReceiveMAC

None

1.3.6.1.4.1.2011.5.25.123.1.28.1

hwEthernetARPIPConflictIPAddress

None

1.3.6.1.4.1.2011.5.25.123.1.28.12

hwEthernetARPReceiveDstMAC

None

1.3.6.1.4.1.2011.5.25.123.1.28.11

hwEthernetARPReceiveDstIPAddr

None

1.3.6.1.4.1.2011.5.25.123.1.28.8

hwEthernetARPIPConflictReceiveVLAN

None

1.3.6.1.4.1.2011.5.25.123.1.28.9

hwEthernetARPIPConflictReceiveCEVLAN

None

1.3.6.1.4.1.2011.5.25.123.1.28.6

hwEthernetARPIPConflictReceiveInterfaceName

None

Impact on the System

If the trap is generated, there are loops on the network. As a result, user's services may be interrupted.

Possible Causes

The source IP and MAC addresses of ARP packets received by the interface were the same as those of the interface.

Procedure

  • The source IP and MAC addresses of ARP packets received by the interface were the same as those of the interface.
    1. Check the network topology to determine whether there are loops on the network.

      • If a loop is detected go to Step 2.
      • If no loop is detected, go to Step 3.

    2. Run the stp mode { rstp | stp } command to configure the STP/RSTP working mode of the switch and then run the stp enable command to enable the STP/RSTP function of the switch. Then, check whether the alarm is cleared.

      • If the trap is cleared, go to Step 4.
      • If the trap persists, go to Step 3.

    3. Collect alarm information and configuration information, and then contact technical support personnel.
    4. End.
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Updated: 2019-04-20

Document ID: EDOC1100039527

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