IANA reserved Address Space

Fri May 30 14:26:47 UTC 2003

If your net 1 and your net 100 talk to each other in your lab, what sort
of NAT plan would allow your net 1 to distinguish between your net 100
and the real net 100?

Really... There are three different zones of RFC-1918 space, so your routing
tables should still be pretty easy to visually parse.

Owen

--On Friday, May 30, 2003 5:49 AM -0700 Brennan_Murphy at nai.com wrote:

>
> Others have pointed out that I should stick to
> RFC 1918 address space. But again, this is a
> lab network and to use the words of another,
> one of the things I want to do is make it much
> easier to "parse visually" my route tables.
> Think of it as a "metric system" type of numbering
> plan.  The 1 and 100 nets would not be advertised
> via BGP obviously...not a hijack situation at all.
>
> If I take into account the possibility that this
> lab will have later requirements to connect to
> the internet, all I have to do is have a NAT plan
> in place...one that even takes into account that
> the 1 and 100 nets could become available some
> day, correct?
>
> Thanks to those who have responded so far.
>
> -----Original Message-----
> From: bmanning at karoshi.com [mailto:bmanning at karoshi.com]
> Sent: Friday, May 30, 2003 8:08 AM
> To: Murphy, Brennan
> Cc: nanog at merit.edu
> Subject: Re: IANA reserved Address Space
>
>
>
> networks 1 and 100 are reserved for future delegation.
> network 10 is delegated for private networks, such as your
> lab.
>
> if you use networks 1 and 100, you are hijacking these
> numbers.
>
> that said, as long as your lab is never going to connect
> to the Internet,  you may want to consider using the following
> prefixes:
>
> 4.0.0.0/8
> 38.0.0.0/8
> 127.0.0.0/8
> 192.0.0.0/8
>
>
>
>>
>>
>> I'm tasked with coming up with an IP plan for an very large lab
>> network. I want to maximize route table manageability and
>> router/firewall log readability. I was thinking of building this lab
>> with the following address space:
>>
>> 1.0.0.0 /8
>> 10.0.0.0 /8
>> 100.0.0.0 /8
>>
>> I need 3 distinct zones which is why I wanted to separate them out. In
>
>> any case, I was wondering about the status of the 1 /8 and the 100 /8
>> networks. What does it mean that they are IANA reserved? Reserved for
>> what? http://www.iana.org/assignments/ipv4-address-space
>>
>> Anyone else ever use IANA reserved address spacing for
>> lab networks? Is there anything special I need to know?
>> I'm under the impression that as long as I stay away
>> from special use address space, I've got no worries.
>> http://www.rfc-editor.org/rfc/rfc3330.txt
>>
>> Thanks,
>> BM
>>
>
>