From: Scott Morris (swm@emanon.com)
Date: Fri Feb 18 2005 - 22:19:08 GMT-3
The archives are always a great place to search!
The EUI-64 addressing scheme is something simply designed to make IPv6 more
"automagical" (in other words trying to sugar coat what a pain in the ass
it's going to be!)
The address is still the address. The netmask is still the netmask. But
you have some auto-learn functions in IPv6 and you can derive your own host
address since you already have a MAC (anyone feel like IPX all over again?).
But you can do it any way you want to. One method is more a controlled
method where you assign things. The other is more magical where things just
happen.
HTH,
Scott Morris, MCSE, CCDP, CCIE4 (R&S/ISP-Dial/Security/Service Provider)
#4713, JNCIP, CCNA-WAN Switching, CCSP, Cable Communications Specialist, IP
Telephony Support Specialist, IP Telephony Design Specialist, CISSP
CCSI #21903
swm@emanon.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of John
Matus
Sent: Friday, February 18, 2005 6:01 PM
To: mullenm@gmail.com
Cc: ccielab@groupstudy.com
Subject: Re: ipv6 eui 64 address
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>
> >
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