CIDR,Sprint and the Big Guys.
Marc E. Hidalgo
mhidalgo at sprint.net
Fri Apr 5 10:14:12 UTC 1996
On Thu, 4 Apr 1996, Christian Nielsen wrote:
> I think we all agree that CIDR is a good thing, I have no
> problems with it and feel that we should use it as best we can.
We all agree there.
> problems that I see, yes I know this has been said before, it is getting
> harder and harder for the little guy to get IPs from the Nic.
We have the same harder and harder time getting addresses too.
> Now that
> Sprint is saying that you now need a /16 to route over their network,
wrong. it is /18 in 207/8
> I don't see the nic just handing out /16s like they did with the /19 or
> before that the /20s etc..
That is true, but with a good network plan and swib your current addresses
you should be able to get a /18 on a new allocation if you can justify it.
else get from an already aggregated block
> And Just because I have nothing else to do, except work, sleep,
> work, internet, eat, work, sleep, I did some looking around.
me too, just none of that sleep stuff these daze ;-)
> /export/home/c/cnielsen> whois 220.127.116.11
> Sprint (NETBLK-SPRINTLINK-BLKS)
> Netname: SPRINTLINK-BLKS
> Netblock: 18.104.22.168 - 22.214.171.124
> Here now shows that Sprint is getting a /15 from the nic and that
> they can now server more customers, move their ips around with little
> problem, etc. But what about some other ISP? Can they get a /15? Nope.
> But I bet you that if Sprint wanted to or even MCI for that matter, they
> could get a /14 or a /13 from the nic.
We have to justify all ip blocks just like anyone else. We maintain an
excess of 90% utilization before asking for more.
> How can we solve this problem? How can we make sure that everyone
> has equal access to IP addresses to make IP addresses usable around the
> Net, save on router memory etc? This is how I would do it.
> Move into the 126.96.36.199 - 188.8.131.52
> Any ISP/NSP that can provide a good network outline, showing not
> only how they plan to put into pratice but show their current setup,
> locations, etc. will be assigned a /16 in the range above. That would
> give about 1200 ISPs /16s.
Guess what. that is exactly how you get what you are asking for from the
registry. In fact even if you can only justify a /19 now but have a good
plan, a /18 or better is usually reserved for you and the /19 allocated.
If you make good on your plan your /19 becomes a /18 etc.
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