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Forum Replies

  1. Hello RENE,
    Thank you for your nice posts.
    I have some questions about adressing a network in IPv6:
    Is there any rules to address an IPv6 network?
    Can we for example use some small subnets such as /120 or should we always work with /64?
    And if we are using stateful, shoud we use /64?
    Thank you for your help

  2. Hi Ahammad,

    With DHCPv6, we don’t advertise a default gateway. We use the router advertisements to figure out what router to use as the default gateway.

    DHCPv6 is only used to supply IPv6 addresses and things like DNS, domain names, NTP servers, etc.




  3. I managed to get this lab to work correctly with GNS3 1.5.2 and below IOS´s

    BOOTLDR: 7200 Software (C7200-ADVIPSERVICESK9-M), Version 15.2(4)S5, RELEASE SOFTWARE (fc1)

    BOOTLDR: 7200 Software (C7200-ADVENTERPRISEK9-M), Version 12.4(24)T5, RELEASE SOFTWARE (fc3)

    BOOTLDR: 7200 Software (C7200-ADVIPSERVICESK9-M), Version 15.2(4)S5, RELEASE SOFTWARE (fc1)

  4. Hello Abey.

    Others have had similar problems. It all depends on the version of IOS you’re using and the platform. Take a look at this post which includes some IOS versions and platforms on which it has been successfully implemented.

    However, using your version it is possible to implement the same thing using the prefix-delegation command. If you’re interested, you can find out more information about that here.

    I hope this has been helpful!


  5. Thank you Laz. Your reply is most appreciated. Have a Great Day !!

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