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Configuration Guide - IP Unicast Routing

S1720, S2700, S5700, and S6720 V200R011C10

This document describes IP Unicast Routing configurations supported by the switch, including the principle and configuration procedures of IP Routing Overview, Static Route, RIP, RIPng, OSPF, OSPFv3, IS-IS(IPv4), IS-IS(IPv6), BGP, Routing Policy ,and PBR, and provides configuration examples.
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Configuring the ECMP Load Balancing Mode

Configuring the ECMP Load Balancing Mode

Equal-Cost Multi-Path routing (ECMP) implements load balancing and link backup.


ECMP applies to the network where multiple links to the same destination are available. In the traditional routing technology, packets are forwarded to the destination through one link only; the other links are in backup or inactive state; switching between these links requires a certain period when dynamic routes are used. Different from the traditional routing technology, ECMP can use multiple links to increase transmission bandwidth and transmit data on a faulty link without any delay or packet loss.


  1. Run system-view

    The system view is displayed.

  2. Run ecmp load-balance sip [ dip ] [ port ]

    The ECMP load balancing mode is set.

    By default, ECMP load balancing is performed on packets based on the source IP address, destination IP address, transport-layer source port number and destination port number.


    Only the S5720EI, S5720HI, S6720S-EI and S6720EI support the ECMP load balancing mode.

Updated: 2019-10-21

Document ID: EDOC1000178171

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