Can not enable ipv6 unicasting

Answered Question
Jul 31st, 2012
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I have cisco catalyst Model WS-C3560X-48, SW Version 15.0(1)SE2, SW Image C3560E-UNIVERSALK9-M


Switch Ports Model              SW Version            SW Image                

------ ----- -----              ----------            ----------              

*    1 54    WS-C3560X-48       15.0(1)SE2            C3560E-UNIVERSALK9-M    


I want to enable ipv6 but I can't


Switch(config)#ip?

ip  ipc 


I search on cisco Feature Navigator it tell that this image can support ipv6.

Correct Answer by Andre Albuquerque about 5 years 2 weeks ago
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Ivan Krimmel Tue, 07/31/2012 - 06:36
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Have you enabled 'ipv6 unicast-routing' enabled in the global config mode?

Eakapong Gomonsing Wed, 08/01/2012 - 00:11
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Thank you for your reply and I can not open the link because of Forbidden.

I type the command ipv6 unicasting but it can not.

Eakapong Gomonsing Tue, 08/07/2012 - 01:05
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Wonderful, after i configure command

Switch(config)#sdm prefer dual-ipv4-and-ipv6 default

i can use IPv6 features.


Thank, Andre.

jstuxuhu0816 Tue, 08/07/2012 - 08:15
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Why we need to configure this command for the switch?

Any special reason?


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