Without managing protocols like icmp or mibs or something to use this then its still a virtual abstraction in the code that must be understoond. the room for error or isolating nodes incorrectly in a network design is very bad. In my role as consultant to several large deployers of IPv6 with mission critical networks where lives are at stake I strongly advise to not even use them. anycast as I said before is close to being a bad idea too but that maybe is workable.
Read the latest architectural Internet doc by Bush et al. Lets keep it simple. site-locals IMO kill that Internet principle completely. Good diagram too. /jim > -----Original Message----- > From: Bill Fenner [mailto:[EMAIL PROTECTED]] > Sent: Monday, June 10, 2002 4:01 PM > To: [EMAIL PROTECTED] > Subject: Re: Fwd: IPv6 Scoped Addresses and Routing Protocols > > > > An example that may be a little too contrived: > > H1 > | > |// > B-------A > / // \ > / | > | | > C D > | | > | | > \ \\ / > E--------F > |\\ > | > H2 > > A,B,C,E,F are in one site (on the left); A, D, and F are in > another site (or > no site). H1 is connected to A, and H2 is connected to F. > > It's fairly clear how to allow A and F to not advertise site-local > addresses across the boundary (at least, as long as it > coincides with a > routing protocol boundary, e.g. OSPF area). However, if H1 knows that > H2 is witchin the same site, H1 is allowed to use its > site-local source > address to send to H2's global address. However, along the > H1-A-D-F-H2 > path, A would have to drop the packet because it has a > site-local address > and is trying to cross a site boundary. > > > Although this example is a bit contrived, it comes close to describing > the topology at AT&T, with Research split between the coasts and both > a private link (e.g. the internal site link) and links to the AT&T > internal network (which is still organizational-internal, so it's > reasonable to speak an IGP). > > Bill > -------------------------------------------------------------------- > IETF IPng Working Group Mailing List > IPng Home Page: http://playground.sun.com/ipng > FTP archive: ftp://playground.sun.com/pub/ipng > Direct all administrative requests to [EMAIL PROTECTED] > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
