RE: IPv6 -- about Compatible address

From: Scott Morris (swm@emanon.com)
Date: Sun Sep 18 2005 - 10:12:59 GMT-3


Compatible addressing is deprecated anyway!

But convert to hex.

172 = AC
16 = 10
24 = 18
2 = 02

Ipv6 address ::AC10:1802/120

But the router will say it is no longer a supported method of addressing.

RFC 3513 still lays out the mechanism (transparent addressing)

According to the latest forum information though:

"0000::/96 was previously defined as the "IPv4-compatible IPv6 address"
prefix. This definition has been deprecated by
[RFC-ietf-ipv6-addr-arch-v4-04.txt]."

Scott

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Hinet--???
Sent: Sunday, September 18, 2005 4:45 AM
To: GroupStudy CCIE-Lab
Subject: IPv6 -- about Compatible address

Hi, groups

If we were told to configure ipv6 address using compatible addressing with
the ipv6 network .
How should we do ?

Eg: if we have a ipv4 address on a serial intf 172.16.24.2/24

I tried to config it as following

r2(config-subif)#ipv6 address ::172.16.24.2/96 % Invalid address
r2(config-subif)#ipv6 address ::172.16.24.2/120 % Invalid address
r2(config-subif)#ipv6 address ::ac10:1802/120 % Invalid address
r2(config-subif)#ipv6 address ::ac10:1802/96 % Invalid address

As you can see , all of them were denied by IOS with "%Invalid address" .

Can someone help me ?
TIA.

Easyman



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