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Fat AP and Cloud AP V200R010C00 Command Reference

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auto-defend enable

auto-defend enable


The auto-defend enable command enables automatic attack source tracing.

The undo auto-defend enable command disables automatic attack source tracing.

By default, automatic attack source tracing is disabled.


auto-defend enable

undo auto-defend enable




Attack defense policy view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

A large number of attack packets may attack the device CPU. Attack source tracing enables the device to trace attack sources and send logs or alarms to notify the administrator so that the administrator can take measures to defend against the attacks. By default, logs are sent to notify the administrator if attack source tracing is enabled.

After automatic attack source tracing is enabled, the device traces the source of the following packets sent to the CPU:
  • Address Resolution Protocol (ARP) packets
  • Dynamic Host Configuration Protocol (DHCP) packets
  • Internet Group Management Protocol (IGMP) packets
  • Internet Control Management Protocol (ICMP) packets
  • Telnet packets
  • Transmission Control Protocol (TCP) packets
  • TTL-expired packets


Attack source tracing configured in an attack defense policy takes effect only when the attack defense policy is applied in the system view.


# Enable attack source tracing in the attack defense policy named test.

<Huawei> system-view
[Huawei] cpu-defend policy test
[Huawei-cpu-defend-policy-test] auto-defend enable
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Updated: 2019-11-21

Document ID: EDOC1100064352

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