While the concept of classes has changed, I'm not so sure that I agree with the complaint here...
Everything I've seen about the multi TLA/SLA concepts always seem to leave 64 bits at the end for the actual host address, so it would be a logical step at that point to have the ASICs spun so that 64 bits was the limit for routing tables. Perhaps I have had the same assumption/misunderstanding that the programmer guys have had then?!?!? Scott -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Saturday, November 20, 2004 9:56 PM To: Kevin Oberman Cc: [EMAIL PROTECTED]; Lars Erik Gullerud; Stephen Sprunk; North American Noise and Off-topic Gripes Subject: Re: Stupid Ipv6 > Just to introduce a touch of practicality to this discussion, it might > be worth noting that Cisco and Juniper took the RFC stating that the > smallest subnet assignments would be a /64 seriously and the ASICs > only route on 64 bits. I suspect that they influenced the spec in this > area as expending them to 128 bits would have been rather expensive. darn... and we fought so hard last time we had to expunge classfull addressing asics/hardware in the late 1990s. looks like it crept back into vendor gear. IPv6 was -never- supposed to be classful. --bill
