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Configuring Switches

To configure a lossless network, you need to configure switches. This section uses the HUAWEI CE6863-48S6CQ switch as an example to describe how to execute a flow control policy.

  1. Log in to the switch and enable priority-based flow control (PFC).
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    system-view
dcb pfc
priority 0
commit
quit
  2. Check whether PFC is enabled.
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    display dcb pfc-profile

    If 0 is returned, the configuration in 1 takes effect.

  3. Configure Explicit Congestion Notification (ECN).
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    system-view
drop-profile ecn
color green buffer-size low-limit 247520 high-limit 18000000 discard-percentage 100
commit
quit
  4. Check the ECN profile.
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    display drop-profile ecn

    If the following information is displayed, the configuration in 3 takes effect.

  5. Configure flow control for each traffic interface. A 25GE interface 1/0/5 is used as an example.
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    interface 25GE 1/0/5
qos queue 0 wred ecn
qos queue 0 ecn
dcb pfc enable mode manual
dcb pfc buffer 0 xoff static 1500 cells
commit
quit
  6. Check whether the configuration takes effect.
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    interface 25GE 1/0/5
display this

    If the information in 5 is returned, the flow control is configured.