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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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Configuring BGP Auto FRR

Configuring BGP Auto FRR

Context

On a traditional IP network, it often takes the routing system several seconds to complete route convergence after a link fault is detected. This convergence speed cannot meet requirements of the services that require a low delay and low packet loss rate because it may lead to service interruption. For example, Voice over Internet Protocol (VoIP) services are only tolerant of millisecond-level interruption. BGP Auto Fast Reroute (FRR) implements route convergence at the millisecond level after a fault is detected at the physical layer or link layer. BGP Auto FRR reduces the impact of link faults on services.

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

      The BGP-IPv4 unicast address family view is displayed.

    • Run ipv4-family vpn-instance vpn-instance-name

      The BGP-VPN instance IPv4 address family view is displayed.

    • Run ipv6-family [ unicast ]

      The BGP-IPv6 unicast address family view is displayed.

    • Run ipv6-family vpn-instance vpn-instance-name

      The BGP-VPN instance IPv6 address family view is displayed.

  4. Run auto-frr

    BGP Auto FRR is enabled for unicast routes.

    By default, BGP Auto FRR is disabled for unicast routes.

  5. Run commit

    The configuration is committed.

Verifying the Configuration

  • Run the display ip routing-table [ vpn-instance vpn-instance-name ] [ ipv4-address [ mask | mask-length ] [ longer-match ] ] verbose command to check backup forwarding information about routes in the IP routing table.

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Updated: 2019-04-20

Document ID: EDOC1100074760

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