On Mon, 22 Jul 2002, Kuntal Chowdhury wrote: > > > > Here are two of the reasons why I think RO will be undesirable: > > > > > > 1. It allows the users to entirely bypass the home IP provider's > network. > > > This will keep the home IP network providers out of added revenue > streams. > > > The situation will be even worse when the AAA clients for accounting are > in > > > the home IP network which will not be in the data path due to RO. > > > > The data does not go to the home IP provider's network so there is > > absolutely zero reason be able to gain revenue from that. > > I don't think I understood your point. Are you agreeing with me or > disagreeing?
Totally disagreeing. Assuming CN is in ISP 1's network, MN is vising ISP 2's network and HA is in ISP 3's network. Your argument was, if I got it right, that route optimizations is bad because traffic is between ISP 1 and ISP 2 so ISP 3 does not get revenue. This seems ridiculous. > > > Here is a reason why I think RO will be meaningless: > > > > > > The core of the internet is managed by large carriers. > > These carriers use > > > (or will be using) Constrained Based Routing (OSPF-TE) > > instead of plain > > > OSPF. > > > > In which world? > > > > Not sure which world it will be :o), but here are some links on TE: > > http://www.ietf.org/internet-drafts/draft-katz-yeung-ospf-traffic-06.txt > http://www.ietf.org/internet-drafts/draft-srisuresh-ospf-te-02.txt > http://www.ietf.org/rfc/rfc3272.txt > http://www.ietf.org/rfc/rfc3209.txt > http://www.ietf.org/rfc/rfc3212.txt Sure, people write about it, but there's fiber in abundance. The problem is who is going to pay for the ISP for using it. This does not change the problem, only makes the problem more complex (like MPLS's TE components). > > If TE is used to route the traffic via such slow paths the difference is > > noticeable (at least, without measurement tools), the network is designed > > and operated badly, period. Nobody would want to pay for that kind of > > service. > > > > What makes you think that the TEed route between the CN and the MN > (i.e. Chicago -> Miami -> Dallas) will be a slow path? The speed of light is a constant. > Do you think the shortest path is ALWAYS the best/fastest path? Almost always, yes. When it's not, it's almost best, which is roughly the same thing. All of this amounts to advantages by route optimization. (I'm disregarding stuff like extremely severe network congestion here, as we're talking about stable scenarios here.) -- Pekka Savola "Tell me of difficulties surmounted, Netcore Oy not those you stumble over and fall" Systems. Networks. Security. -- Robert Jordan: A Crown of Swords -------------------------------------------------------------------- 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] --------------------------------------------------------------------
