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Configuration Guide - IP Service

CloudEngine 12800 and 12800E V200R005C00

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DNS, IP performance optimization, IPv6, DHCPv6, and IPv6 DNS.
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Configuring the Packet Forwarding Mode

Configuring the Packet Forwarding Mode

Context

When low packet delay is required, run the assign forward mode cut-through command to set the packet forwarding mode to cut-through to speed up packet forwarding.

NOTE:

Only the CE12800E configured with FD-X series cards supports the packet forwarding mode.

When the packet forwarding mode is set to cut-through:
  • In cut-through mode, CRC error packets are also forwarded but not discarded.

  • After you configure the packet forwarding mode or restore the default packet forwarding mode, restart the card to make the configuration take effect.
  • In cut-through mode, if network congestion occurs, the system forwards packets in store-and-forward mode. After network congestion is eliminated, the system forwards packets in cut-through mode.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run assign forward mode { store-and-forward | cut-through }

    The packet forwarding mode is configured.

    By default, the packet forwarding mode is store-and-forward mode.

    NOTE:
    After you configure the packet forwarding mode or restore the default packet forwarding mode, restart the card to make the configuration take effect.

  3. Run commit

    The configuration is committed.

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Updated: 2019-04-18

Document ID: EDOC1100039535

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