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S600-E V200R010C00 Configuration Guide - User Access and Authentication

This document describes the working mechanisms, configuration procedures, and configuration examples of User Access and Authentication features, such as AAA, NAC, and Policy Association.
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(Optional) Configuring Timers for 802.1X Authentication

(Optional) Configuring Timers for 802.1X Authentication


During 802.1X authentication, multiple timers implement systematic interactions between access users, access devices, and the authentication server. You can change the values of timers by running the dot1x timer command to adjust the interaction process. This command is necessary in special network environments. It is recommended that you retain the default settings of the timers. You can configure the following types of timers in 802.1X authentication:
  • Client timeout timer (client-timeout): After sending an EAP-Request/MD5-Challenge request packet to the client, the device starts this timer. If the client does not respond within the period set by the timer, the device retransmits the packet.
  • Authentication request timeout timer (tx-period): This timer defines two intervals. After sending an EAP-Request/Identity request packet to the client, the device starts the timer. If the client does not respond within the first interval set by the timer, the device retransmits the authentication request packet. The device multicasts the EAP-Request/Identity request packet at the second interval to detect the client that does not actively send the EAPoL-Start connection request packet for compatibility. The timer defines the interval for sending the multicast packet.


  1. Run system-view

    The system view is displayed.

  2. Run dot1x timer { client-timeout client-timeout-value | tx-period tx-period-value }

    The 802.1X timers are configured.

    By default, client-timeout is set to 5 seconds; tx-period is set to 30 seconds.


    The client timeout timer, and the authentication request timeout timer are enabled by default.

Updated: 2019-08-21

Document ID: EDOC1000141885

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