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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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Configuring Inter-device Link Aggregation (Standalone Device)

Configuring Inter-device Link Aggregation (Standalone Device)

Context

In Figure 3-18, the device or server can be dual-homed to the dual-active networking through the Eth-Trunk in LACP mode. Eth-Trunk members are located on two devices that both forward traffic. By doing this, device-level load balancing is implemented. If one device fails, traffic is switched to the other device, improving reliability of service traffic forwarding.

Figure 3-18 Dual-active networking where a device is dual-homed through the Eth-Trunk in LACP mode
In the scenario where inter-device link aggregation is deployed, to ensure successful negotiation of the Eth-Trunk, Eth-Trunks on member devices should meet the following requirements:
  • They have the same LACP system priority.

  • They have the same Eth-Trunk ID.

  • They have the same LACP system ID.

  • Member interfaces have different numbers in LACP.

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 mode { lacp-static | lacp-dynamic }

    The Eth-Trunk is configured to work in LACP mode.

    By default, an Eth-Trunk works in manual load balancing mode.

  4. Run lacp system-id mac-address

    The LACP system ID of the Eth-Trunk is configured.

    By default, the LACP system ID of an Eth-Trunk is the bridge MAC address.

  5. Run lacp port-id-extension enable

    Numbers of Eth-Trunk member interfaces in LACP mode are configured to increase by 32768.

    By default, the numbers of Eth-Trunk member interfaces in LACP mode are automatically allocated.

    NOTE:

    The numbers of Eth-Trunk member interfaces on two devices must be different. To prevent repeated Eth-Trunk member interface numbers that are automatically allocated by the system, perform this step on one device only so that numbers of its Eth-Trunk member interfaces are increased by 32768.

  6. (For member interfaces with different rates) Run lacp mixed-rate link enable

    Interfaces with different rates are configured to forward data packets after joining an Eth-Trunk in LACP mode.

    By default, after interfaces with different rates join an Eth-Trunk in LACP mode, member interfaces with one rate are selected to forward traffic.

  7. Run quit

    Exit from the Eth-Trunk interface view.

  8. Run lacp priority priority

    The LACP system priority is configured.

    By default, the LACP system or interface priority is 32768.

  9. Run commit

    The configuration is committed.

Follow-up Procedure

Run the display eth-trunk trunk-id command to check whether negotiation of the inter-device Eth-Trunk is successful.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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