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Configuration Guide - Ethernet Switching

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, MUX VLAN, 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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(Optional) Setting the Upper and Lower Thresholds for the Number of Active Interfaces

(Optional) Setting the Upper and Lower Thresholds for the Number of Active Interfaces

Context

The number of Up member links affects the status and bandwidth of an Eth-Trunk. To ensure that the Eth-Trunk functions properly and is less affected by member link status changes, set the following thresholds.

  • Lower threshold for the number of active interfaces: When the number of active interfaces falls below this threshold, the Eth-Trunk goes Down. This guarantees the Eth-Trunk a minimum available bandwidth.
  • Upper threshold for the number of active interfaces: When the number of active interfaces reaches this threshold, you can add new member interfaces to the Eth-Trunk, but excess member interfaces enter the Down state. This improves network reliability with assured bandwidth.
The upper threshold for the number of active interfaces at the local end can be different from that at the remote end. If the two values are different, the smaller one is used.
NOTE:

After the upper and lower thresholds for the number of active interfaces are set, the range of the active interface quantity is specified. Depending on the negotiation result of the local and remote ends on a link, the number of active interfaces can reach the upper threshold at most. The active interface is selected as follows: select an Actor based on the system priority and system ID, and then select the active interface based on the port priority and port ID of the Actor. To configure a specific interface as the active interface, run the lacp priority command in the interface view to increase the interface priority.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface eth-trunk trunk-id

    The Eth-Trunk interface view is displayed.

  3. Run least active-linknumber link-number

    The lower threshold for the number of active interfaces is set.

    By default, the lower threshold for the number of active interfaces is 1.

    The lower threshold for the number of active interfaces on the local device can be different from that on the remote device. If the two values are different, the larger one is used.

  4. Run lacp max active-linknumber link-number

    The upper threshold for the number of active interfaces is set.

    By default, the upper threshold for the number of active interfaces is 8 on the CE5810EI, for CE6880EI, the upper threshold for the number of active interfaces is 64, for other models, the upper threshold for the number of active interfaces depends on the assign forward eth-trunk mode command:

    For the CE6870EI and CE6875EI:
    • When 256 is specified, the maximum number of active interfaces is 64.
    • When 512 is specified, the maximum number of active interfaces is 32.
    • When 1024 is specified, the maximum number of active interfaces is 16.
    For other models except the CE6870EI and CE6875EI:
    • When 64 is specified, the maximum number of active interfaces is 32.
    • When 128 is specified, the maximum number of active interfaces is 16.
    • When 256 is specified, the maximum number of active interfaces is 8.
    • When 512 is specified, the maximum number of active interfaces is 4.
    • When 1024 is specified, the maximum number of active interfaces is 2.

    The upper threshold for the number of active interfaces must be greater than or equal to the lower threshold for the number of active interfaces.

  5. Run commit

    The configuration is committed.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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