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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Get as much IP space as you ever dreamed of, was: Re: Looking to buy IPv4 addresses from class C swamp
Thus spake "Stephen J. Wilcox" <[email protected]> > On Mon, 28 Apr 2003, Jack Bates wrote: > > Actually, IBM confirmed that any announcements from 9/8 were > > guaranteed to be bogus. IBM uses 9/8 internally. They use NAT to > > convert 9/8 addresses back to routed addresses. One can imagine > > that IBM has a large internal network globally with interconnects to > > various partners. Yet many companies have found that utilization of > > NAT when communicating with the public networks is a sound > > addition to security. > > Further to my earlier post.. a large global private network requiring > uniquespace at many sites, they use 9/8 .. why not use 10/8 ??? > (renumbering reasons aside that is!) Because they expose subnets of 9/8 to customers of their data-processing services and assign 9/8 addresses to customers as well if needed. Those customers are likely to be using 10/8 themselves, so a different block is the only scalable solution not involving double NAT. > Recall the counter argument from Stephen Sprunk was that it needed > a per site allocation from a registry, and yet these guys are managing > just fine without it! Read my post again; IBM is a perfect example of using public addresses for private purposes, which I found to be the preferred option (vs NAT). S Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
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