IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ? - TCP-IP

This is a discussion on IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ? - TCP-IP ; Hello, I don't quite understand ipv6 scopes and multicast scopes and such... pretty confusing. With ipv4 the following multicast address works for loopback, local area network and probably internet too: 234.56.78.90 Is there an ipv6 multicast equivalent ? I am ...

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Thread: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

  1. IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Hello,

    I don't quite understand ipv6 scopes and multicast scopes and such... pretty
    confusing.

    With ipv4 the following multicast address works for loopback, local area
    network and probably internet too:

    234.56.78.90

    Is there an ipv6 multicast equivalent ?

    I am looking for a single ipv6 multicast address which can be used to test
    pretty much everything: loopback, lan, internet ?!?

    Bye,
    Skybuck.



  2. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    > Hello,
    >
    > I don't quite understand ipv6 scopes and multicast scopes and such...
    > pretty confusing.
    >
    > With ipv4 the following multicast address works for loopback, local area
    > network and probably internet too:
    >
    > 234.56.78.90
    >
    > Is there an ipv6 multicast equivalent ?
    >
    > I am looking for a single ipv6 multicast address which can be used to test
    > pretty much everything: loopback, lan, internet ?!?
    >
    > Bye,
    > Skybuck.


    Also if a single address is not possible... then multiple are welcome too...

    Please advice...

    Bye,
    Skybuck.



  3. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Oh well I am just gonna add a couple and hope for the best

    Maybe later I add a little embedded tool to make such addressess but not for
    now :P*

    Bye,
    Skybuck.



  4. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Me gonna try these later on:

    FF11:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    FF12:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    FF15:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    FF18:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    FF1E:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E

    Scope 1: Node
    Scope 2: Link
    Scope 5: Site
    Scope 8: Organization
    Scope E: Global

    Me wonders about the other scopes ?

    Bye,
    Skybuck.



  5. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Hmm so far winsock/windows doesn't seem to accept these.. Hmmm.

    Bye,
    Skybuck.

    "Skybuck Flying" wrote in message
    news:280dc$48ae73a3$54198363$32149@cache5.tilbu1.n b.home.nl...
    > Me gonna try these later on:
    >
    > FF11:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    > FF12:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    > FF15:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    > FF18:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    > FF1E:01:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E
    >
    > Scope 1: Node
    > Scope 2: Link
    > Scope 5: Site
    > Scope 8: Organization
    > Scope E: Global
    >
    > Me wonders about the other scopes ?
    >
    > Bye,
    > Skybuck.
    >





  6. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Apperently GetAddrInfo fails... while trying to resolve the string to
    SocketAddress.

    Hmm not sure why it's failing me go investigate...

    Maybe it just needs some option/parameter set... maybe it needs sock_dgram
    to be set or so.

    Bye,
    Skybuck.



  7. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    I also tried:

    FF:15:00:00:Etc
    FF:05:00:00:Etc

    GetAddrInfo not working yet...

    Hmm.

    Well maybe I could circumvent it and see if it's gonna work at all.

    Maybe I need my own 'string' to socket address function for now...

    Yeah but not gonna make that now... first I am gonna screw around with the
    memory during debug to see if it's gonna work at all

    Bye,
    Skybuck.



  8. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Yes,

    Modieifing the memory proves everything else is working just fine.

    The problem is with GetAddrInfo.

    It chokes on:

    FF:15:00:00:00:00:00:00:00:00:00:00:00:00:00:01

    Hmmm sucky.

    Don't know why it's chocking.

    Maybe I made some programming mistake or maybe the return is just crappy.

    It's crappy anyway hehehe.

    Bye,
    Skybuck.



  9. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Seems like GetAddrInfo is simply bugged for full ipv6 multicast addresses
    maybe even unicast addresses or so...

    Bye,
    Skybuck.

    "Skybuck Flying" wrote in message
    news:185d9$48ae7c98$54198363$7868@cache5.tilbu1.nb .home.nl...
    > Yes,
    >
    > Modieifing the memory proves everything else is working just fine.
    >
    > The problem is with GetAddrInfo.
    >
    > It chokes on:
    >
    > FF:15:00:00:00:00:00:00:00:00:00:00:00:00:00:01
    >
    > Hmmm sucky.
    >
    > Don't know why it's chocking.
    >
    > Maybe I made some programming mistake or maybe the return is just crappy.
    >
    > It's crappy anyway hehehe.
    >
    > Bye,
    > Skybuck.
    >




  10. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Yeah,

    I tried microsoft's (notice no capital letter lol) example at the bottom of
    this page:

    http://msdn.microsoft.com/en-us/libr...20(VS.85).aspx

    It doesn't work for:

    FF:15:00:00:00:00:00:00:00:00:00:00:00:00:00:01

    Or anything like that.

    Bye,
    Skybuck.



  11. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Ok,

    Thanks to wikipedia now I see the problem... actually it's not really my
    problem.. it's just stupidly designed...

    Apperently my notation is not valid.

    It must be:

    FF15:0000:0000:0000:0000:0000:0000:0001

    Now the microsoft example is working.

    Bye,
    Skybuck.



  12. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Oh well...

    Maybe 00:00:00:00:etc was reserved for ethernet or so...

    So maybe not so stupid... but just unfortunate

    Bye,
    Skybuck.



  13. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Ok,

    Next version of UDP Speed Test will use these ip addressess for testing
    multicast:

    ipv4:
    234.56.78.90
    ipv6:
    FF11:0102:0304:0506:0708:090A:0B0C:0D0E
    FF12:0102:0304:0506:0708:090A:0B0C:0D0E
    FF15:0102:0304:0506:0708:090A:0B0C:0D0E
    FF18:0102:0304:0506:0708:090A:0B0C:0D0E
    FF1E:0102:0304:0506:0708:090A:0B0C:0D0E

    So far it's working...

    However ipv6 multicast performance is slow or limited to 10 MByte/sec ?

    ^^ Weird, but it's ok for now

    Bye,
    Skybuck.



  14. Re: IPv6 multicast address equivalent of IPv4 multicast address:234.56.78.90 ?

    Skybuck Flying wrote:
    > Thanks to wikipedia now I see the problem... actually it's not really my
    > problem.. it's just stupidly designed...
    >
    > Apperently my notation is not valid.
    >
    > It must be:
    >
    > FF15:0000:0000:0000:0000:0000:0000:0001


    So in other words it *was* your problem: it's your notation that was
    stupid. Not GetAddrInfo(), the design of IPv6, etc ...

    Mildly entertaining to see how far you would go, reporting meanwhile on
    your non-progress, and blaming everything in sight, before you found it
    necessary to look up a specification.

  15. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    One example showed:

    ff15::1

    So it would seem ff15:4:3:2:1:etc:etc:etc:etc:etc is allowed etc but it's
    not.

    :: has special meaning.

    One must happen to know that

    It's easy to see how a newby or somebody who forgot how it works might go
    wrong and that's unfortunate !

    Bye,
    Skybuck.



  16. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    Concerning the speed it might depedent on the interface... or if something
    is online or local etc.

    I don't know yet why speeds are sometimes different.

    Fastest ipv6/udp multicast speed I saw so far was 180 megabyte/sec.

    (Soon udp speed test 3 will be released )

    Bye,
    Skybuck.



  17. Re: IPv6 multicast address equivalent of IPv4 multicast address:234.56.78.90 ?

    Hello,

    Skybuck Flying a écrit :
    > One example showed:
    >
    > ff15::1


    This is a valid IPv6 address notation. Equivalent to ff15:0:0:0:0:0:0:1.

    > So it would seem ff15:4:3:2:1:etc:etc:etc:etc:etc is allowed etc but it's
    > not.


    This is not a valid IPv6 address notation. IPv6 addresses are 128-bit
    long, so the notation contains 8 hex 16-bit groups separated by colons.

  18. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?


    "Pascal Hambourg" wrote in message
    news:g8s15f$1vb6$1@biggoron.nerim.net...
    > Hello,
    >
    > Skybuck Flying a écrit :
    >> One example showed:
    >>
    >> ff15::1

    >
    > This is a valid IPv6 address notation. Equivalent to ff15:0:0:0:0:0:0:1.
    >
    >> So it would seem ff15:4:3:2:1:etc:etc:etc:etc:etc is allowed etc but it's
    >> not.

    >
    > This is not a valid IPv6 address notation. IPv6 addresses are 128-bit
    > long, so the notation contains 8 hex 16-bit groups separated by colons.


    The IPv4 Address notation was 4 decimal 8 bit groups separated by dots.

    Why now the sudden change to 16 bit groups ?

    Bye,
    Skybuck.




  19. Re: IPv6 multicast address equivalent of IPv4 multicast address:234.56.78.90 ?

    Skybuck Flying a écrit :
    >>
    >>IPv6 addresses are 128-bit
    >>long, so the notation contains 8 hex 16-bit groups separated by colons.

    >
    > The IPv4 Address notation was 4 decimal 8 bit groups separated by dots.
    >
    > Why now the sudden change to 16 bit groups ?


    The address length was multiplied by 4. Would you have preferred a
    notation with *16* 8-bit groups ?

  20. Re: IPv6 multicast address equivalent of IPv4 multicast address: 234.56.78.90 ?

    On 2008-08-23 06:28:38 -0400, "Skybuck Flying" said:

    > Concerning the speed it might depedent on the interface... or if something
    > is online or local etc.


    Having done a lot of work in this space myself, multicast "speed" is a
    complex thing and not trivial. How "fast" multicast "goes" from a host
    perspective is a complicated mix of OS resources, the hardware
    underneath it, and the forwarding rates offered by the network
    equipment in the path of the multicast tree.

    If you can consistently get rates reliably between ~ +/i 1Mb/s at
    specific frame / packet sizes, you're doing quite well.

    /dmfh

    --
    _ __ _
    __| |_ __ / _| |_ 01100100 01101101
    / _` | ' \| _| ' \ 01100110 01101000
    \__,_|_|_|_|_| |_||_| dmfh(-2)dmfh.cx


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