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Fat AP and Cloud AP V200R010C00 Command Reference

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fragment-reassemble user-configure

fragment-reassemble user-configure


The fragment-reassemble user-configure command configures user-defined items for the fragment reassembly function.

The undo fragment-reassemble user-configure command cancels the configuration of user-defined items for the fragment reassembly function.


fragment-reassemble user-configure { defense-check | pass-through }

undo fragment-reassemble user-configure { defense-check | pass-through }


Parameter Description Value
defense-check Indicates fragment attack defense. -
pass-through Indicates the pass through mode. -


System view

Default Level

2: Configuration level

Usage Guidelines

By default, all user-defined items of the fragment reassembly function are disabled.

After the pass through mode is enabled (using the fragment-reassemble user-configure pass-through command), in some special fragment traffic scenarios (for example, the fragments completely overlap, and the overlapped part has the same content), the system will regard the traffic as abnormal traffic and will not reassemble the fragments. If the fragment attack defense function has been enabled (using the fragment-reassemble user-configure defense-check command), the abnormal fragments will be discarded. If the fragment attack defense function has not been enabled, the system will forward the fragments. After the pass through mode is disabled, the system assembles the fragments based on the normal processing flow.


# Enable the fragment attack defense function.

<Huawei> system-view
[Huawei] fragment-reassemble user-configure defense-check
Updated: 2019-11-21

Document ID: EDOC1100064352

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