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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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Adding Member Interfaces to an Eth-Trunk

Adding Member Interfaces to an Eth-Trunk

Context

You can add member interfaces to an Eth-Trunk in the Eth-Trunk interface view or member interface view.

When adding an interface to an Eth-Trunk, pay attention to the following points:

  • On the CE5810EI, an Eth-Trunk contains a maximum of 8 member interfaces. On the CE6880EI, an Eth-Trunk contains a maximum of 64 member interfaces. On other models, the number of member interfaces in an Eth-Trunk depends on the assign forward eth-trunk mode command. The member interfaces in an Eth-Trunk must have the same type.

  • A member interface cannot be configured with some services or static MAC addresses.
  • When adding an interface to an Eth-Trunk, ensure that the interface uses the default link type.
  • An Eth-Trunk cannot be added to another Eth-Trunk.
  • An Ethernet interface can be added to only one Eth-Trunk. To add the Ethernet interface to another Eth-Trunk, delete it from the Eth-Trunk first.
  • If an interface of the local device is added to an Eth-Trunk, an interface of the remote device directly connected to the interface of the local device must also be added to an Eth-Trunk so that the two ends can communicate.
  • After interfaces are added to an Eth-Trunk, the Eth-Trunk learns MAC addresses and ARP entries but member interfaces do not.
  • Devices at both ends of an Eth-Trunk must use the same number of physical interfaces, interface rate, duplex mode, jumbo, and flow control mode.
  • In a stack scenario, it is recommended that the number of member interfaces added to a LAG be the nth power of 2. Otherwise, unknown unicast traffic may be unevenly load balanced.

Procedure

  • Add member interfaces to an Eth-Trunk in the Eth-Trunk interface view.
    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 trunkport interface-type { interface-number1 [ to interface-number2 ] } &<1-n>

      A member interface is added to the Eth-Trunk.

      When you add member interfaces to an Eth-Trunk in a batch, if one interface cannot be added to the Eth-Trunk, all subsequent interfaces in the batch cannot be added to the Eth-Trunk, either.

      NOTE:

      For the CE5810EI, the value of n is 8. For the CE6880EI, the value of n is 64. For other models, the value of n depends on the assign forward eth-trunk mode command.

    4. Run commit

      The configuration is committed.

  • Add member interfaces to an Eth-Trunk in the member interface view.
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The member interface view is displayed.

    3. Run eth-trunk trunk-id

      The member interface is added to an Eth-Trunk.

    4. Run commit

      The configuration is committed.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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