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Configuration Guide - Device Management

S1720, S2700, S5700, and S6720 V200R011C10

This document describes the principles and configurations of the Device Management features, and provides configuration examples of these features.
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(Optional) Enabling the Fast Awaking Mode

(Optional) Enabling the Fast Awaking Mode

Context

A device in deep sleeping mode can awake automatically in certain conditions. However, the common awakening mode takes a long time in mode, and therefore Layer 2 traffic forwarding cannot be restored quickly. To shorten the awakening time and ensure quick service recovery, you can enable the fast awakening mode.

Before using the set power manage awaken-mode fast command, disable STP globally and save the configuration. Loops may occur when STP is disabled; therefore, monitor the network status to check for loops when using the fast awaking function.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run set power manage awaken-mode fast

    The fast awaking mode is enabled.

    NOTE:
    • Fewer Layer 2 configurations shorten recovery time for the device to forward Layer 2 traffic. For example, when 12 ports on the S5700-52P-LI are configured with 128 VLANs and other ports have no Layer 2 configuration, the S5700-52P-LI can forward traffic again within 30 seconds after exiting the sleeping mode.
    • When the device forwards Layer 2 traffic again, other modules do not completely restore services immediately. Traffic may fail to be forwarded, loops may occur, and users may fail to log in to the device before the modules completely restore service.
    • Only the S5700S-28P-LI-AC and S5700S-52P-LI-AC in the S5700S-LI series and S5700-28P-LI-AC, S5700-28P-LI-DC, S5700-52P-LI-AC, S5700-52P-LI-DC in the S5700LI series support the fast awaking mode.
    • An interface working in auto mode can set the link type to access or trunk through LNP negotiation. When you save the configuration before the interface enters the sleeping state, only the configuration related to the access link type is saved. Therefore, if the negotiated link type is trunk, traffic cannot be quickly restored after the interface is wakened. To enable fast traffic recovery on the interface, manually set the link type to access.
    • In a stack, the set power manage awaken-mode fast command cannot enable a device to fast restore Layer 2 traffic after exiting the device sleeping mode. However, you can use the undo set power manage awaken-mode fast command to delete the configuration in standalone mode.

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Updated: 2019-09-23

Document ID: EDOC1000178167

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