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Log Reference

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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SECE/4/STRACK_DENY: Some packets are dropped because an attack is detected.(Interface=[OCTET], sourceMAC=[OCTET], sourceIP=[IPADDR], CVLAN=[INTEGER], PVLAN=[INTEGER])


The switch discards some packets because it detects an attack.


Parameter Name Parameter Meaning
Interface Indicates the interface that receives attack packets.
sourceMAC Indicates the source MAC address of attack packets. The value is 0 if source IP address-based tracing is configured.
sourceIP Indicates the source IP address of attack packets. The value is 0 if source MAC address-based tracing is configured.
CVLAN Indicates the inner VLAN ID of attack packets.
PVLAN Indicates the outer VLAN ID of attack packets.

Possible Causes

The attack tracing module detects an attack, and the attack defense action is set to deny.


  1. Check whether the discarded packets are sent from an authorized user.
  2. If the sender is an authorized user, run the auto-defend whitelist whitelist-num { acl acl_number | interface interface-type interface-number } command to add the user to the whitelist. Then packets sent from this user are not discarded.
  3. If the sender is an attacker, you do not need to perform any operation.
Updated: 2019-08-21

Document ID: EDOC1000142069

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