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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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(Optional) Setting the DR Priority for an OSPF Interface of the Broadcast or NBMA Network Type

(Optional) Setting the DR Priority for an OSPF Interface of the Broadcast or NBMA Network Type

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The OSPF 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 ospf dr-priority priority

    The DR priority of the OSPF interface is set. A larger value indicates a higher priority.

    By default, the DR priority of an interface is 1.

  5. Run commit

    The configuration is committed.

Follow-up Procedure

Restarting or shutting down an interface will interrupt the OSPF neighbor relationships between devices. Therefore, exercise caution when performing the operation.

Reconfiguring the DR priority for a device does not change the DR or BDR on the network where the device is deployed. The DR or BDR can be reelected using the following methods. This, however, will result in the interruption of OSPF adjacency relationships between devices. Therefore, the following methods are used only when necessary.

  • Restart the OSPF processes on all switches.

  • Run the shutdown and then undo shutdown commands on interfaces where OSPF neighbor relationships are established.

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Updated: 2019-04-20

Document ID: EDOC1100074760

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