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| Sun Ethernet Fabric Operating System ### OSPFv3 Administration Guide

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## Re-Enable Demand Extensions

You can re-enable the demand circuit after it has been disabled.

This example enables demand extensions on SEFOS1 (router `10.0.0.1`).

1. Enter Global Configuration mode in SEFOS1.

       SEFOS# configure terminal

2. Enable OSPF globally in the switch SEFOS1.

       SEFOS(config)# ipv6 router ospf

3. Configure the OSPF router ID.

       SEFOS(config-router)# router-id 10.0.0.1

4. Enable demand extensions.

       SEFOS(config-router)# demand extensions

5. Exit Router Configuration mode.

       SEFOS(config-router)# end

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