Re: When IPv4 will exhaust?

Hi Nadeem,

IPv4 will exhaust, there is no question about this. It does not really
matter if it happens 2011 or 2012, it is soon.

 From my experience the problem is not turning on IPv6 on an
interface. Even getting OSPF running is not compliated. But there are a
few missing parts. On some plattforms OSPF authentication is not
implemented. There is no IPV6 loadbalancing.

DHCP (address, DNS, etc.) and router advertisements (prefix, default
gateway) have both to be used to get all needed information to a client
in your network. So you get two protocols for the price of one. The
client can change its IPv6 address (privacy extensions). Does this
affect your firewall and access lists? Or the client get 2 IPV6 global
unicast addresses, one from DHCP, one from RA.

IPv6 works without NAT, so you have public IPv6 addresses on your
clients in the network. Does this chance anything on the firewall?

All applications need to be checked. For example you web server
statistics. What do your scripts do with mixed log files? Is there GEO
ip for IPv6? Have you IPv4 addresse hard coded somewhere in your code?
Did you use Pv4 addresses as database index?

The company I work for moves to IPv6, slowly, but we see the many bigger
and smaller tasks that come with IPv6.

I think Cisco should make IPV6 an important part of the CCIE lab. It is
the protocol we all have to use in the comming years.

Greetings,

Wilhelm
CCIE #25603 (R&S)

> i have come across one interesting counter about IPv4, link
> http://inetcore.com/project/ipv4ec/index_en.html
>
> What experts have views about depletion of IPv4?
>
> Best Regards,
>
> Nadeem Rafi
>
>
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Received on Sat Oct 24 2009 - 07:22:45 ART