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Configuration Guide - IP Unicast Routing

S7700 and S9700 V200R010C00

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 PrefVal Attribute

Configuring the PrefVal Attribute

Context

The PrefVal attribute is a Huawei proprietary attribute and is valid only on the device where it is configured. When a BGP routing table contains multiple routes to the same destination, BGP prefers the route with the highest PrefVal.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

  3. Enter the corresponding address family view based on network type to configure BGP devices on networks.

    • Run:

      ipv4-family { unicast | multicast }

      The IPv4 address family view is displayed.

    • Run:

      ipv6-family [ unicast ]

      The IPv6 address family view is displayed.

  4. Run:

    peer { group-name | ipv4-address | ipv6-address } preferred-value value

    The PrefVal attribute is configured for all the routes learned from a specified peer.

    By default, the PrefVal of a route learned from a peer is 0.

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Updated: 2019-08-21

Document ID: EDOC1000141900

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