From: John Matus (john_matus@hotmail.com)
Date: Fri Feb 18 2005 - 22:53:20 GMT-3
...but how is 210:7BFF:FE35:CC72 the same as 0000:0000:0000:0001. seems to
me that they are 2 completely different host addresses. i under stand that
you could use one or the other just like 10.1.1.1 or 10.1.1.2, but to me
they seem to represent to distinctly different addresses :-0
am i missing something?
>From: Matt Mullen <mullenm@gmail.com>
>Reply-To: Matt Mullen <mullenm@gmail.com>
>To: John Matus <john_matus@hotmail.com>
>CC: ccielab@groupstudy.com
>Subject: Re: ipv6 eui 64 address
>Date: Fri, 18 Feb 2005 20:30:21 -0500
>
>The difference is in the way the host part of the address is
>represented. Without eui-64, in your example the host ID is 1. Or
>to be more specific it is 0000:0000:0000:0001. With eui-64, the
>host-id gets generated based on a mac address. So in the case where I
>enabled eui-64 the host-id is 210:7BFF:FE35:CC72. Functionally they
>are the same. It's just two different ways of representing the host
>portion of the IPv6 address. I can't think of any other good reason
>to use eui-64 except for that it could help to reduce the chance of
>duplicate IP addresses being created. Question for the group: what
>would be some reasons to use eui-64 addresses? Personally, I would
>rather not use eui-64 because to me an address like 2000::1 is more
>recognizable than 2000::210:7BFF:FE35:CC72.
>
>
>On Fri, 18 Feb 2005 23:01:09 +0000, John Matus <john_matus@hotmail.com>
>wrote:
> > so.....i'm a bit confused. what is the functional difference between an
> > ipv6 address w/out eui-64 and one w/ eui-64?
> >
> > >From: Matt Mullen <mullenm@gmail.com>
> > >Reply-To: Matt Mullen <mullenm@gmail.com>
> > >To: John Matus <john_matus@hotmail.com>
> > >CC: ccielab@groupstudy.com
> > >Subject: Re: ipv6 eui 64 address
> > >Date: Fri, 18 Feb 2005 15:46:55 -0500
> > >
> > >Hi John,
> > >
> > >It won't use eui-64 unless you tell it to:
> > >
> > >R2#conf t
> > >Enter configuration commands, one per line. End with CNTL/Z.
> > >R2(config)#int lo100
> > >R2(config-if)#ipv6 address 2000::1/64
> > >R2(config-if)#do sh ipv6 int brie lo100
> > >Loopback100 [up/up]
> > > FE80::210:7BFF:FE35:CC72
> > > 2000::1
> > >R2(config-if)#
> > >
> > >R2#conf t
> > >Enter configuration commands, one per line. End with CNTL/Z.
> > >R2(config)#int lo100
> > >R2(config-if)#ipv6 address 2000::1/64 eui-64
> > >R2(config-if)#do sh ipv6 int brie lo100
> > >Loopback100 [up/up]
> > > FE80::210:7BFF:FE35:CC72
> > > 2000::210:7BFF:FE35:CC72
> > >
> > >HTH,
> > >
> > >Matt
> > >
> > >
> > >On Fri, 18 Feb 2005 20:39:23 +0000, John Matus <john_matus@hotmail.com>
> > >wrote:
> > > > is eui-64 the default ipv6 address type.........meaning if i do a:
> > > >
> > > > ipv6 address 2000::1/64, will that show up in the config as
>2000::1/64
> > > > eui-64? <i don't have a router in front of me>
> > > >
> > > > _________________________________________________________________
> > > > On the road to retirement? Check out MSN Life Events for advice on
>how
> > >to
> > > > get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
> > > >
> > > >
>_______________________________________________________________________
> > > > Subscription information may be found at:
> > > > http://www.groupstudy.com/list/CCIELab.html
> > > >
> >
> > _________________________________________________________________
> > Express yourself instantly with MSN Messenger! Download today - it's
>FREE!
> > http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
> >
> >
This archive was generated by hypermail 2.1.4 : Thu Mar 03 2005 - 08:51:23 GMT-3