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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 NBMA Network Attributes

Configuring NBMA Network Attributes


  1. (Optional) Set the network type to NBMA.

    An NBMA network must be fully meshed. Any two switches on the NBMA network must be directly reachable. In most cases, however, this requirement cannot be met. To resolve this problem, run specific commands to forcibly change the network type to NBMA. For details, see Configuring Network Types for OSPF Interfaces.

    1. Run:


      The system view is displayed.

    2. Run:

      interface interface-type interface-number

      The interface view is displayed.

    3. (Optional) On an Ethernet interface, run undo portswitch

      The interface is switched to Layer 3 mode.

      By default, an Ethernet interface works in Layer 2 mode.

    4. Run:

      ospf network-type nbma

      The network type of the OSPF interface is set to NBMA.

  2. (Optional) Set the interval at which Hello packets for polling are sent on the NBMA network.

    On the NBMA network, after the neighbor relationship becomes invalid, the switch sends Hello packets at an interval defined in the polling mechanism.

    1. Run:

      ospf timer poll interval

      The interval at which Hello packets for polling are sent by an NBMA interface is set.

      The default value is 120, in seconds.

  3. Configure a neighboring switch on the NBMA network.

    If the network type of an interface is NBMA, the interface cannot broadcast Hello packets to discover neighboring switches. Therefore, the IP address of a neighboring switch must be configured on the interface and whether the neighboring switch can participate in DR election must be determined on the interface.

    1. Run:


      Exit from the interface view.

    2. Run:

      ospf [ process-id ]

      The OSPF process view is displayed.

    3. Run:

      peer ip-address [ dr-priority priority ]

      A neighboring switch is configured on the NBMA network.

Updated: 2019-08-21

Document ID: EDOC1000141900

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