[address-policy-wg] Source of routing table growth
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Sascha Lenz
slz at baycix.de
Fri Jul 1 13:23:33 CEST 2011
Hi, > Hello, > > On Thu, Jun 30, 2011 at 11:04 AM, Sascha Lenz <slz at baycix.de> wrote: > Hi, > > [...] > > > why do you expect a "sudden spike"? You know, IPv6 adoption is painfully slow. > And actually, that's one of the points why some (most?) support the proposal, to speed that up! > > > Not the IPv4 PI address space holders create the real problems... > <?> I beg to differ, IPv4 is the problem, completely independent of "PI" and "PA" or anything we do with IPv6, by design. > So, i'm a little confused now why this is bad. > > I don't know if this few (yes, it's "few" for me) more IPv6 prefixes will cause any problems at all, > or if bugs are trigged, no one knows. We'll have to see, or someone might want to write a paper about it indeed :-) > > And why should THIS be a money issue? If you don't plan for 20k IPv6 prefixes when buying new border routers nowadays, what the hell are you doing? > And what "border-router-grade" hardware doesn't support this few prefixes? > > I'm FAR more concerned about IPv4 table growth/deaggregation after exhaustion... > > We are concerned as well! However, the two tables share the same phisical memory! > > And why do you have gear that got no problem with an exploding IPv4 table after exhaustion, but can't cope with 20k IPv6 prefixes? I still don't get that. Please, someone finally explain to me why 20k or even 100k IPv6 Prefixes in the DFZ is a problem, my lab says, even my 5year old Ciscos and Junipers have no problems with that right now. The default for an old Sup720 is 500k IPv4 + 250k IPv6 prefixes or so for example (IIRC, was some time ago i tested that). Are you saying that we should not deploy IPv6? Guys, really, cope with the reality. Don't be like politicians and create FUD. -- Mit freundlichen Grüßen / Kind Regards Sascha Lenz [SLZ-RIPE] Senior System- & Network Architect
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