----- Original Message ----- From: "Pekka Savola" <[EMAIL PROTECTED]> To: "JINMEI Tatuya / ????" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Thursday, January 17, 2002 6:28 AM Subject: Re: IPv6 w.g. Last Call on "IPv6 Host to Router Load Sharing"
> On Thu, 17 Jan 2002, JINMEI Tatuya / [ISO-2022-JP] 神明達哉 wrote: > > I agre with Francis. And, actually, our implementation (i.e. all *BSD > > variants) basically keeps the same router (of the same priority), so > > it will be non-compliant with the SHOULD. I believe our > > implementation is not the only example of this "non-compliant" behavior. > > True. > > > If the SHOULD is really the consensus, I'll change the implementation > > so that it will be compliant again. However, I'm still not fully > > convinced that the change is worth making (perhaps many) existing > > applications non-compliant. > > > > As Francis pointed out, there are many cases of "several default > > routers with a better one." In this case, picking up random routers > > (without the knowledge of router preference) will just be meangless, > > because we'll eventually converge on the better router with redirect > > messages. > > I agree, as I commented on this when the draft first appeared. > > IMO it's _much_ better practise have predictable behaviour. > Load-distribution is not that. When there are two default routes of equal > weight, I want to only use one, and if the one I use fails, failover > nicely to the other. > With RIFRAF Routing, people can use both links with 50/50 (coin-toss) selection for traffic when the links are working. If one link fails, then all of the traffic has to go to the other link. If that link fails, they are out of luck. RIFRAF could be easily extended to 3, 4, or more links, with the traffic distributed 33%, 25%, etc. Since the current implementation does a 50/50 coin toss, and selects 4 bits for the packet marking, one can also build a 50/50 system with 16 traffic flows. Couple that with the 16 QoS classes and you have lots of ways to go. Jim Fleming 2002:[IPv4]:000X:03DB http://www.IPv8.info -------------------------------------------------------------------- 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] --------------------------------------------------------------------
