Re: [NANOG] RFC1918 conformance

["Jeffrey C. Ollie" <jeff () ollie clive ia us>]

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On Tue, 11 Feb 1997 22:04:19 +0300 (MSK), alex () relcom eu net writes:
> Sorry, but while I was looking to this list, I just reminded interesting 
> issue. Why IANA did not reserved 223.255.0.0/16 or something simular; by 
> other words, I'd like to have short (256, 512, 1024) private address 
> space in the END of total address space for the normal IP (excluding D 
> class etc).
>
> For example. I have a lot of CISCO routers with OSPF protocol. Thnis 
> crazy IOS use highest loopback interface address as router-ID address; I 
> use loopbacks to install load balancing etc. and I can't prevent 
> loopbacks from being equal on the different routers. That's why I hardly 
> need some IP addresses for 'Loopback 98' interface to use it as 
> router-ID; and this have to be higher than any user's addresses. I use 
> 233.255.254.0/24 for this purposes, but it's not reserved address.
>
> This is one, simple, example why it's nessesary to reserve some short 
> address space in the begin and in the end of total addresses.

No, that's an example of a poorly designed protocol
implementation. One ought to be able to specify an arbitrary router id
for OSPF (heh - even Bay routers can do that :) rather that relying on
such an odd algorithm. I was so surprised by this that I just had to go
look it up:

<http://www.cisco.com/univercd/data/doc/software/11_2/cnp1/5ciprout.htm#REF38888>

The equivalent Bay reference:

<http://support.baynetworks.com/Library/tpubs/content/114065A/J_55.HTM#HEADING55-6>


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Date: Tue, 11 Feb 1997 14:23:20 -0600
From: "Jeffrey C. Ollie" <jeff () ollie clive ia us>
In-reply-to: Your message of "Tue, 11 Feb 1997 22:04:19 +0300."
             <Pine.SUN.3.91.970211213356.1420T-100000@virgin> 
Subject: Re: [NANOG] RFC1918 conformance 
To: nanog () merit edu

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-- 
Jeffrey C. Ollie                     |            Should Work Now (TM)
Python Hacker, Mac Lover             |
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