No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - IP Service

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DNS, IP performance optimization, IPv6, DHCPv6, and IPv6 DNS.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
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:

The CE6875EI, CE6870EI, and CE5800 series switches do not support 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 device 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.
  • When the packet forwarding mode is set to cut-through, the CE6850HI, CE6850U-HI, CE6851HI, CE6855HI, CE6856HI, CE6860EI, CE7850EI, CE7855EI, CE8850EI, and CE8860EI do not support PFC, ETS, interface-based rate limiting in the outbound direction, queue-based traffic shaping, traffic policy defining car, interface-based rate limiting in the inbound direction, and flow control function.
  • On the CE7850EI and CE7855EI, converted interfaces do not support the packet forwarding mode set to cut-through.

  • If the packet forwarding mode on the CE6810LI, CE6810EI, and CE6850EI is set to cut-through, the traffic policy containing car cannot be applied to the outbound direction.

  • For the CE6880EI, when the packet forwarding mode is set to cut-through, the device does not support QoS, ACL, VLAN traffic statistics, or NetStream.
  • After the assign forward mode cut-through command is configured on the CE8860EI, CE6860EI, or CE8850EI, outbound and inbound port mirroring or VLAN mirroring cannot be configured on the same observing port.
  • 10GE interfaces on the CE8850EI do not support the cut-through packet forwarding 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 device to make the configuration take effect.

  3. Run commit

    The configuration is committed.

Translation
Download
Updated: 2019-05-08

Document ID: EDOC1100004354

Views: 72315

Downloads: 147

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next