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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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(Optional) Setting the Maximum Number of LAGs and the Maximum Number of Member Interfaces in Each LAG

(Optional) Setting the Maximum Number of LAGs and the Maximum Number of Member Interfaces in Each LAG

Context

Generally, a switch supports a fixed maximum number of LAGs and a fixed maximum number of member interfaces in each LAG. On the S6720EI and S6720S-EI, you can run the assign trunk command to set the maximum number of LAGs and the maximum number of member interfaces in each LAG, implementing flexible networking and meeting various service requirements.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run assign trunk { trunk-group group-number | trunk-member member-number }*

    The maximum number of LAGs and the maximum number of member interfaces in each LAG are set.

    By default, the device supports a maximum of 128 LAGs and 8 member interfaces in each LAG. member-number can be 8, 16, 32, or 64, and member-number multiplied by group-number cannot exceed 2048.

    • When more than 128 Eth-Trunks or 16 member interfaces are configured using the assign trunk { trunk-group group-number | trunk-member member-number } * command, the enhanced mode is used for load balance known unicast packets by default. If the enhanced mode is not used, problems such as packet loss and uneven load balancing may occur. The switch load balances non-known unicast packets based on source and destination MAC addresses by default.
    • If you use the assign trunk command to modify Eth-Trunk specifications, the existing Eth-Trunk configuration will become invalid or be lost. Exercise caution when you run the assign trunk command.

      • When the configured Eth-Trunk specifications are reduced and the Eth-Trunks that exceed the specifications are configured, the configuration of excess Eth-Trunks is invalid.

      • When the configured value of group-number is larger than 128 or the configured value of member-number is larger than 16, the switch can only use the enhanced mode to load balance known unicast packets. The common mode is invalid for the known unicast packets.

    • After the Eth-Trunk specifications are modified, save the configuration and restart the switch to make the modification take effect.

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Updated: 2018-12-24

Document ID: EDOC1100038339

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