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Support Documentation

Log Reference

CloudEngine 8800, 7800, 6800, and 5800 V200R005C00

This document provides the explanations, causes, and recommended actions of logs on the product.

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SECURITYTRAP/4/LDM_STRACK_SRCIP

SECURITYTRAP/4/LDM_STRACK_SRCIP

Message

SECURITYTRAP/4/LDM_STRACK_SRCIP: Attack occurred.(Interface=[Interface], SourceIp=[SourceIp], CVLAN=[CVLAN], PVLAN=[PVLAN], EndTime=[EndTime], TotalPackets=[TotalPackets], SourceIpv6=[SourceIpv6])

Description

The system detected attacks from a user with a specified source IP address.

Parameters

Parameter Name Parameter Meaning
Interface Interface index
SourceIp Source IP address
SourceIpv6 Source IPv6 address
CVLAN Inner VLAN tag of an attack packet sent by a user
PVLAN Outer VLAN tag of an attack packet sent by a user
EndTime Time when the last attack packet is received
TotalPackets Number of received attack packets

Possible Causes

Cause: The rate at which packets were sent by a user (a source IP address) to the CPU exceeded the alarm threshold.

Procedure

  • Cause: The rate at which packets were sent by a user (a source IP address) to the CPU exceeded the alarm threshold.
    1. Run the display auto-defend attack-source command to check potential attack sources and to determine whether the packet transmission rate is abnormal.

      • If the packet transmission rate is abnormal, go to Step 2.

      • If the packet transmission rate is normal, no action is required.

    2. Add the user who sent attack packets to a blacklist in the cpu-defend policy template so that the system will not send packets from this user to the CPU. Then, check whether the fault is rectified. If the fault persists, go to Step 3.
    3. Collect trap, log, and configuration information, and contact technical support personnel.
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Updated: 2019-04-20

Document ID: EDOC1100039602

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