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Configuration Guide - VXLAN

CloudEngine 12800 and 12800E V200R003C00

This document describes the configurations of VXLAN.
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(Optional) Optimizing ACL Resource Usage on the VXLAN

(Optional) Optimizing ACL Resource Usage on the VXLAN

Context

If you configure other ACL resource-consuming services, such as MQC, simplified ACL, traffic policing, BD traffic statistics collection, and DHCP on a switch deployed with VXLAN services, there is a high probability that the other services fail to be configured. In this case, use either of the following methods to reduce the probability of service deployment failures.
  • Enabling the VXLAN service extension function:

    This function takes effect only on EC (except the CE-L48GT-EC and CE-L48GS-EC cards), ED, EF, and EG series cards configured with the VXLAN service.

    NOTE:

    Only the CE12800 supports this function.

    After this function is enabled, packets with lengths ranging from 230 bytes to 294 bytes and transmitted over NVO3 tunnels on EC (except the CE-L48GT-EC and CE-L48GS-EC cards), ED, EF, and EG series cards cannot be sent to EA, EB, CE-L48GT-EC, and CE-L48GS-EC cards.

  • Disabling an Eth-Trunk from load balancing VXLAN packets in optimized mode:
    • You are advised to disable load balancing of VXLAN packets in optimized mode when neither the user side nor the network side of a VXLAN tunnel is an Eth-Trunk.
    • You can disable load balancing of VXLAN packets in optimized mode when either the user side or the network side of a VXLAN tunnel is an Eth-Trunk. After this function is disabled, an Eth-Trunk does not evenly load balance VXLAN packets or does not perform load balancing.
    NOTE:
    • When the card interoperability mode is non-enhanced mode, both EA/EC/ED/EF/EG/BA/CE-FWA/CE-IPSA series interface cards and FD/FDA/FD1/FG/FG1 series interface cards can be installed on the switch, that is, interface cards of any series can be installed on the switch.

    • This function is not supported if the card works in enhanced mode. Run the display forward capability command to check the working mode of the card.

    • Only the CE12800 supports this function.

Procedure

  1. Enable the VXLAN service extension function.

    1. Run system-view

      The system view is displayed.

    2. Run assign forward nvo3 service extend enable

      The VXLAN service extension function is enabled.

      By default, the VXLAN service extension function is disabled.

    3. Run commit

      The configuration is committed.

  2. Disable an Eth-Trunk from load balancing VXLAN packets in optimized mode.

    1. Run system-view

      The system view is displayed.

    2. Run assign forward nvo3 eth-trunk hash disable

      An Eth-Trunk is disabled from load balancing VXLAN packets in optimized mode.

      By default, an Eth-Trunk load balances VXLAN packets in optimized mode.

    3. Run commit

      The configuration is committed.

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Updated: 2019-05-05

Document ID: EDOC1100004207

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