On 3/1/15 1:26 PM, Owen DeLong wrote: >>> It was the combination of asymmetric, no or few IPs (and NAT), and >>> bandwidth caps. >> >> let's not rewrite history here: IPv4 address scarcity has been a thing >> since the very early 1990s. Otherwise why would cidr have been created? > > CIDR had nothing to do with address scarcity. CIDR was invented for routing > table slot scarcity in Cisco AGS hardware of the era.
nope sorry, both are justifications... https://tools.ietf.org/html/rfc1519#page-6 There are not according to 1993 era RFC's, enough class B and A networks to go around... (there still aren't) We were around then and we got the patch. > Routers running out of BGP table space wasn’t just a fear at the time, it was > a real problem on a number of networks, including, but not limited to SPRINT > and MCI who were the big dogs in the fight at the time. your cisco ags+ wasn't going to make it over the hump. > NAT, OTOH, is an address conservation mechanism which has unfortunately > of late been mistaken for a security tool. If only people would realize how > much > NAT negatively impacts security, manageability, etc. > > Owen > >
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