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Configuration Guide - DCN and Server Management

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configurations of Trill, FCoE, DCB, and NLB Server Cluster Association.
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Configuring an ETS Profile

Configuring an ETS Profile

Context

Enhanced transmission selection (ETS) provides two-level flow control:
  • Flow control based on the priority group: congestion management and traffic shaping based on the priority group
  • Flow control based on the priority: queue congestion management, queue shaping, and queue congestion avoidance

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run dcb ets-profile profile-name

    An ETS profile is created and the ETS profile view is displayed.

    The system provides a default ETS profile default. This profile can be modified but cannot be deleted. You can create an ETS profile or modify the default ETS profile according to service requirements.

  3. (Optional) Run priority-group pg-value

    A priority group is created.

    By default, an ETS profile defines three priority groups: PG0, PG1, and PG15.

  4. Run priority-group pg-value queue { start-queue [ to end-queue ] } &<1-8>

    The specified interface queues are added to a priority group.

    By default, queues 0, 1, 2, 4, and 5 belong to PG0, queue 3 belongs to PG1, and queues 6 and 7 belong to PG15.

  5. Configure flow control based on the priority group.

    • Run priority-group pg-value drr weight weight-value (excluding CE6870EI and CE6875EI)

      The Deficit Round Robin (DRR) weight of a priority group is set.

      By default, the weights of PG0 and PG1 are both 50.

      NOTE:
      • When there are more than three priority groups, multiple priority groups share system resources. When a priority group has the remaining bandwidth, scheduling of the remaining bandwidth may be inaccurate.

      • When there are more than three priority groups, number of queues in only one priority group can be more than one.

    • Run priority-group pg-value wfq weight weight-value (CE6870EI and CE6875EI)

      The Weighted Fair Queue (WFQ) weight of a priority group is set.

      By default, the weights of PG0 and PG1 are both 50.

      NOTE:
      • If there are multiple queues in a priority group, when traffic in queues all exceeds the bandwidth, scheduling is accurate. When some traffic in queues exceeds the bandwidth and the total traffic exceeds the interface bandwidth, scheduling is inaccurate.

      • When there are more than three priority groups, number of queues in only one priority group can be more than one.

    • Run priority-group pg-value shaping cir cir-value pir pir-value [ cbs cbs-value pbs pbs-value ] (excluding CE6870EI and CE6875EI)

      Traffic shaping is enabled for a priority group and shaping parameters are set.

      By default, traffic shaping is disabled for a priority group.

    • Run priority-group pg-value shaping cir cir-value [ cbs cbs-value ] (CE6870EI and CE6875EI)

      Traffic shaping is enabled for a priority group and shaping parameters are set.

      By default, traffic shaping is disabled for a priority group.

      NOTE:

      During scheduling, traffic within the CIR in PG15 is preferentially scheduled, and then traffic in other priority groups is scheduled.

  6. Configure flow control based on the priority.

    • Run queue { start-queue [ to end-queue ] } &<1-8> { pq | drr [ weight weight-value ] }

      A scheduling mode is set for interface queues.

      By default, an interface queue uses priority queuing (PQ).

    • Run queue { start-queue [ to end- queue ] } &<1-8> shaping cir cir-value pir pir-value [ cbs cbs-value pbs pbs-value ] (excluding CE6870EI and CE6875EI)

      Traffic shaping is enabled for interface queues and shaping parameters are set.

      By default, traffic shaping is disabled for an interface queue.

    • Run queue { start-queue [ to end-queue ] } &<1-8> shaping cir cir-value [ cbs cbs-value ] (CE6870EI and CE6875EI)

      Traffic shaping is enabled for interface queues and shaping parameters are set.

      By default, traffic shaping is disabled for an interface queue.

    • Run queue { start-queue [ to end-queue ] } &<1-8> wred drop-profile-name

      A drop profile is bound to interface queues.

      By default, no drop profile is bound to an interface queue.

  7. Run commit

    The configuration is committed.

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Updated: 2019-05-08

Document ID: EDOC1100004349

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