Re[4]: IPv6 enable command

From: cadet (cadet22@gmail.com)
Date: Wed Oct 11 2006 - 11:15:29 ART


Thank you, Scott !
I think that we with Andras same opinion as you, but Cisco docs - another
;)))
Max.

Wednesday, October 11, 2006, 5:04:38 PM, you wrote:

> Two different things:

> "ipv6 enable

> To enable IPv6 processing on an interface that has not been configured with
> an explicit IPv6 address, use the ipv6 enable command in interface
> configuration mode. To disable IPv6 processing on an interface that has not
> been configured with an explicit IPv6 address, use the no form of this
> command.

> The ipv6 enable command automatically configures an IPv6 link-local unicast
> address on the interface while also enabling the interface for IPv6
> processing. The no ipv6 enable command does not disable IPv6 processing on
> an interface that is configured with an explicit IPv6 address."

> So if you type an IPv6 address onto an interface, it is NOT necessary to use
> the "ipv6 enable" command. If you want to use the link-local only, and
> don't type anything in particular you can do that by using the enable
> command here.

> HTH,

>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
> #153, CISSP, et al.
> CCSI/JNCI-M/JNCI-J
> IPExpert VP - Curriculum Development
> IPExpert Sr. Technical Instructor
> smorris@ipexpert.com
> http://www.ipexpert.com
>

> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> cadet
> Sent: Wednesday, October 11, 2006 9:31 AM
> To: Kulcsar Andras Benjamin
> Cc: ccielab@groupstudy.com
> Subject: Re[2]: IPv6 enable command

> Andras,
>
> As far as old version ?
> Because in Configuration guide for IOS v12.3 I saw same sample ;)

> Regards,
> Max.

>> Hello Max,

>> AFAIK in older software versions you had to use both commands.
>> Now I think if you have to configure an explicit IPv6 address on an
>> interface, you do not need ipv6 enable.

>> Regards,
>> Andras
>>

>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>> Of cadet
>> Sent: Wednesday, October 11, 2006 3:01 PM
>> To: ccielab@groupstudy.com
>> Subject: IPv6 enable command

>> Hi ALL !

>> I have next question about configuration IPv6:
>> When I make ipv6 configuration on the interface I need enter ipv6
>> address and ipv6 enable commands or enough only ipv6 address and it will
> not mistake on the lab ?

>> Because as I read using ipv6 enable command:
>> ... To enable IPv6 processing on an interface that has not been
>> configured with an explicit IPv6 address ....

>> ... The ipv6 enable command automatically configures an IPv6
>> link-local unicast address on the interface while also enabling the
> interface for IPv6 processing ...

>> But also there are link with opposite configuration:

>> (http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_confi
>> guration_guide_chapter09186a00801d660d.html)

>> Defining an OSPF for IPv6 Area Range: Example The following example
>> specifies an OSPF for IPv6 area range:

>> interface Ethernet7/0

>> ipv6 address 2001:0DB8:0:0:7::/64 eui-64
>> ipv6 enable
>> ipv6 ospf 1 area 1

>> interface Ethernet8/0
>> ipv6 address 2001:0DB8:0:0:8::/64 eui-64
>> ipv6 enable
>> ipv6 ospf 1 area 1

>> interface Ethernet9/0
>> ipv6 address 2001:0DB8:0:0:9::/64 eui-64
>> ipv6 enable
>> ipv6 ospf 1 area 1

>> So, if I have explicit ipv6 address, WHICH VARIANT WILL BE CORRECT ON THE
> LAB ?

>> Thank you.
>> Max.

> _______________________________________________________________________



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