To:
Jim Bound <seamus@bit-net.com>
CC:
Randy Bush <randy@psg.com>, Keith Moore <moore@cs.utk.edu>, ngtrans@sunroof.eng.sun.com, users@ipv6.org, dnsop@cafax.se
From:
Brian E Carpenter <brian@hursley.ibm.com>
Date:
Fri, 19 Jan 2001 13:21:27 -0600
Sender:
owner-dnsop@cafax.se
Subject:
Re: (ngtrans) Re: IPv6 dns
Well, as I recall the earlier discussion, this rather depends on the expected frequency and overhead of renumbering. If the (frequency*overhead) of renumberings is comparable to the (frequency*overhead) of lookups, we have to optimize for both. Renumbering frequency depends on whether we believe that sites will indeed be renumbered whenever they change ISP (or upstream ISP). That was certainly Plan A and lies behind the whole concept of TLA addressing. On that assumption we could certainly expect hundreds of renumberings per day. (Which is of course a lot less than millions of lookups per second.) Renumbering overhead is presumably measured in units of zone transfers. Brian Jim Bound wrote: > > this is an excellent point!! optimizing the lookups seems prudent. > > /jim > > On Fri, 19 Jan 2001, Randy Bush wrote: > > > > given that renumbering events are unlikely to be entirely automatic anyway > > > > as fred succintly said, how often does renumbering occur? how often do > > lookups occur? so, for which should we optimize? > > > > randy > > > > --------------------------------------------------------------------- > > The IPv6 Users Mailing List > > Unsubscribe by sending "unsubscribe users" to majordomo@ipv6.org > > -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Brian E Carpenter Program Director, Internet Standards & Technology, IBM On assignment for IBM at http://www.iCAIR.org Board Chairman, Internet Society http://www.isoc.org Non-IBM email: brian@icair.org