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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 Timeout Interval for Receiving LACPDUs

(Optional) Setting the Timeout Interval for Receiving LACPDUs

Context

If the Eth-Trunk on the local device cannot detect a self-loop or fault that occurred on a member interface in the LAG on the remote device, data on the local device is still load balanced among original active interfaces. As a result, data traffic on the faulty link is discarded.

After the timeout interval at which LACPDUs are received is set, if a local member interface does not receive any LACPDUs within the configured timeout interval, the local member interface becomes Down immediately and no longer forwards data.

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 lacp timeout { fast [ user-defined user-defined ] | slow }

    The timeout interval at which LACPDUs are received is set.

    By default, the timeout interval at which an Eth-Trunk receives LACPDUs is 90 seconds.

    • After you run the lacp timeout command, the local end notifies the remote end of the timeout interval by sending LACPDUs. When fast is specified, the interval for sending LACPDUs is 1 second. When slow is specified, the interval for sending LACPDUs is 30 seconds.

    • The timeout interval for receiving LACPDUs is three times the interval for sending LACPDUs. When fast is specified, the timeout interval for receiving LACPDUs is 3 seconds. When slow is specified, the timeout interval for receiving LACPDUs is 90 seconds.

    • You can use different modes of the timeout interval at the two ends. However, to facilitate maintenance, you are advised to use the same mode at both ends.

    • Each member interface in an Eth-Trunk processes a maximum of 20 LACPDUs every second; a switch processes a maximum of 100 LACPDUs every second. Extra LACPDUs are droped.

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Updated: 2018-12-24

Document ID: EDOC1100038339

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