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Configuration Guide - Ethernet Switching

S1720, S2700, S5700, and S6720 V200R012(C00 and C20)

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Associating the Secondary Member Interface of an Eth-Trunk in LACP Mode with Its Primary Member Interface

Associating the Secondary Member Interface of an Eth-Trunk in LACP Mode with Its Primary Member Interface

Prerequisites

NOTE:

Only the S5720HI, S5730HI, and S6720HI support this configuration.

  • Link aggregation in LACP mode has been configured, the maximum number of active links at both ends is 1, and two member interfaces have been added to the Eth-Trunk at both ends. For details, see Configuring Link Aggregation in LACP Mode.
  • Basic Y.1731 configurations have been completed, including the Maintenance Association (MA), Maintenance Domain (MD), Maintenance Association End Point (MEP), and test instance. For details, see Y.1731 Configuration in S1720, S2700, S5700, and S6720 V200R012(C00&C20) Configuration Guide - Reliability. In this scenario, note the following points:
    • The map vlan vlan-id command cannot be used to bind an MA to a VLAN.
    • Only the outward-facing MEP can be created.

Context

In a port connectivity check (port CC) scenario (no service is bound), an Eth-Trunk in LACP mode is configured on two devices. To ensure that services are not interrupted, associate the secondary member interface of the Eth-Trunk in LACP mode with its primary member interface. If the primary link has poor quality, traffic is promptly switched to the secondary link.

As shown in Figure 3-20, when no service is bound to the MA, an Eth-Trunk in LACP mode is configured on two devices. Interface1 where the MEP resides is the interface of the Eth-Trunk's primary link. Configure thresholds for the delay and frame loss ratio on Interface1. If Y.1731 detects that the primary link has poor quality, Interface1 is triggered to go ETHOAM down. To ensure that services are not interrupted, associate the secondary member interface of the Eth-Trunk in LACP mode with its primary member interface. The secondary link then preempts the primary state, implementing an automatic primary/secondary link switchover.

When the primary link's quality recovers, you can manually enable forcible switching if no preemption is configured or preemption is enabled but the delay is not reached.

Figure 3-20  Eth-Trunk in LACP mode

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The primary member interface view of an Eth-Trunk's Actor is displayed.

  3. Run the one of following commands to configure the interface according to your network requirements:
    1. Run delay-measure two-way { delay-threshold | variation-threshold } test-id test-id trigger if-down

      The interface is triggered to go ETHOAM down when the delay or delay variation based on a test instance ID exceeds a specified threshold.

    2. Run loss-measure single-ended-synthetic { local-ratio-threshold | remote-ratio-threshold } test-id test-id trigger if-down

      The interface is triggered to go ETHOAM down when the near- or far-end frame loss ratio based on a test instance ID exceeds a specified threshold.

  4. Run quit

    Return to the system view.

  5. Run interface interface-type interface-number

    The secondary member interface view of an Eth-Trunk's Actor is displayed.

  6. Run lacp track interface interface-type interface-number priority-reduced value

    The secondary member interface is associated with the primary member interface, and the priority of the secondary member interface is dynamically changed.

    When the primary link's quality recovers, run the lacp force-switch command in the Eth-Trunk interface view to enable forcible switching if no preemption is configured or preemption is enabled but the delay is not reached.

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Updated: 2018-12-24

Document ID: EDOC1100038339

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