My concern with the first option is that it requires new functionality on the host joining an anycast group, namely running a routing protocol. Generally, hosts already support MLD/IGMP in order to join multicast groups, so why require them to run a routing protocol?
Brian [EMAIL PROTECTED] wrote: > > >All, > > Just to give everyone the ability to review the draft, here is > >the announcement of the draft outlining changes to MLD to support > >hosts announcing their membership in anycast groups. Ideally, these > >changes will get incorporated into the MLDv2 spec at some point. > > i believe we don't have consensus on how we should deal with anycast > route injection. there are at least several ways. my preference is > with the first option below. as anycast address is being be treated > in similar ways as unicast address, i think it most natural option. > > itojun > > - node with anycast address(*) participating routing exchange > pros: deployable now, routing protocol has mechanisms for > protecting against malicious route injection (sometimes > they are just "use IPsec"...) > cons: some hates it when the node is a host > - node with anycast address(*) sending MLD packet, adjacent router injects > a route to the cloud > pros: less entity speaking routing protocol > cons: deployment delay, protection mechanism not really there > > (*) must be a router based on RFC2460 > -------------------------------------------------------------------- > 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] --------------------------------------------------------------------
