pyungsoo wrote : > As i know, APs are acting as link-layer relays, which means that they transport > Ethernet-layer frames between the wireless medium and the subnet. > In other words, APs don't provide the IP functionality.
Ok. I see. > Do you mean that APs should provide the IPv6 functionality to "cache RAs"? I am telling about an advanced MIPv6 issue "Eliminsation of the random delay before sending an RA." Brett Pentland said that the followings are a number of MIPv6-optimization discussed on the mailing list. Optimistic DAD - <http://www.ietf.org/internet-drafts/draft-moore-ipv6-optimistic-dad-00.txt> Fast router advertisements - <http://www.ietf.org/internet-drafts/draft-mkhalil-ipv6-fastra-02.txt> Fast router discovery with AP notification - <http://www.ietf.org/internet-drafts/draft-jinchoi-l2trigger-fastrd-01.txt> Duplicate Address Detection Optimization using IPv6 Multicast Listener Discovery - <http://www.ietf.org/internet-drafts/draft-daley-ipv6-mcast-dad-01.txt> I think that the above documents are worth discussing in the next step of mobileip WG. The second document is related to *Fast RA*, and the third document is related to *Cached RA*. In my opinion, the Kempf's *Fast RA* is a good idea because it only requires the change of router, IP device. However, I don't want to combine the idea with the current MIPv6 spec , since many MIPv6 guys urge MIPv6 to be a standization. As a seperate draft, we had better discuss the idea. The third document is a good idea, too. 'AP cached RA' is a simple and easy-deployable method which can reduce the L3 handover time of mobile nodes. Yes. The idea is to insert the small part of IPv6 functionality into APs. As far as I understand, the idea can be an alternative to fast RAs in another separate draft. > as i know, there are two 802.11 deployments : with relays APs and with integrated >AP/AR. > thus, i think this proposal(APs cache RAs) can be considered in IETF if 802.11 > deployments with "integrated AP/AR" is considered. what do you think? I agree with James Kempf. In an integrated AP/AR, 'AP cached RA' is no different than having the router send the RA after the MN has done the reassociation. Youn-Hee Han. ----- Original Message ----- From: "Pyungsoo Kim" <[EMAIL PROTECTED]> To: "Youn-Hee Han" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Thursday, November 21, 2002 8:28 AM Subject: Re: MIPv6 and ND value changes > Han wrote: > > > I agree with Richard. > > The AP cahed RAs can be esaily implemented and an alternative to fast RAs. > > IMHO, The AP which cache RAs and sends them to an MN at its association with the >AP, > > is more deployable approach than router supporting fast RA. > > The change of AP is easier than the change of router. > > > > As i know, APs are acting as link-layer relays, which means that they transport > Ethernet-layer frames between the wireless medium and the subnet. > In other words, APs don't provide the IP functionality. > Do you mean that APs should provide the IPv6 functionality to "cache RAs"? > > Rgds, > -pyungsoo > -------------------------------------------------------------------- > 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] --------------------------------------------------------------------
