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Configuration Guide - IP Unicast Routing

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP Unicast Routing, including IP Routing, Static Route, RIP, RIPng, OSPF, OSPFv3, IPv4 IS-IS, IPv6 IS-IS, BGP, Routing Policy, and PBR.
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Setting the Maximum Number of Equal-Cost Routes

Setting the Maximum Number of Equal-Cost Routes

Context

A CloudEngine 8800, 7800, 6800, and 5800 series switches supports load balancing among equal-cost routes. That is, you can configure multiple routes, which have the same destination and preference.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run ospf [ process-id ]

    The OSPF process view is displayed.

  3. Run maximum load-balancing number

    By default, load balancing is supported and a maximum of 32 equal-cost routes on the CE5800 series switches excluding CE5880EI and CE6810LI, 128 equal-cost routes on the other modules can participate in load balancing.

    NOTE:
    When the number of equal-cost routes is greater than the number specified in the maximum load-balancing command, OSPF selects valid routes for load balancing according to the following criteria:
    1. Route preference: Routes with higher preferences are selected for load balancing.
    2. Interface index: If routes have the same preference, routes with larger interface indexes are selected for load balancing.
    3. Next-hop IP address: If routes have the same preference and same interface index, routes with larger next-hop IP addresses are selected for load balancing.

  4. Run commit

    The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100074760

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