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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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Disabling an Interface from Sending Update Packets

Disabling an Interface from Sending Update Packets

Context

Routing loops can be avoided by disabling interfaces from sending Update packets.

There are two ways to prevent interfaces from sending Update packets:
  • Suppress an interface in the RIP process view.
  • Disable an interface from sending RIP packets in the interface view.

The configuration in the RIP process view has a higher priority than the configuration in the interface view.

Procedure

  • Configuration in a RIP process view
    1. Run system-view

      The system view is displayed.

    2. Run rip [ process-id ]

      The RIP view is displayed.

    3. Run one of the following commands depending on the site requirements:

      To disable all interfaces from sending Update packets, run silent-interface all

      To disable an interface from sending Update packets, run silent-interface interface-type interface-number

      You can set an interface to silent so that it only receives Update packets to update its routing table. The silent-interface command takes precedence over the undo rip output command in the interface view.

      By default, an interface can receive and send Update packets.

      NOTE:

      If you want a small number of interfaces to send RIP packets in either broadcast or multicast mode, you can run the silent-interface all command first to prevent all interfaces from sending RIP packets in either broadcast or multicast mode and then run the silent-interface disable interface-type interface-number command to restore the capability to send RIP packets in either broadcast or multicast mode for the small number of interfaces.

    4. Run commit

      The configuration is committed.

  • Configuration in the interface view
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The interface view is displayed.

    3. 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.

      The mode switching function takes effect when the interface only has attribute configurations (for example, shutdown and description configurations). Alternatively, if configuration information supported by both Layer 2 and Layer 3 interfaces exists (for example, mode lacp and lacp system-id configurations), no configuration that is not supported after the working mode of the interface is switched can exist. If unsupported configurations exist on the interface, delete the configurations first and then run the undo portswitch command.

      NOTE:

      If many Ethernet interfaces need to be switched to Layer 3 mode, run the undo portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10> command in the system view to switch these interfaces to Layer 3 mode in batches.

    4. Run undo rip output

      The interface is disabled from sending RIP Update packets.

      By running this command, you can specify whether to send RIP Update packets on an interface. The silent-interface command takes precedence over the undo rip output command. By default, an interface is allowed to send RIP Update packets.

    5. Run commit

      The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100074760

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