Hi all, Joe, Thanks very much! Please see comments inline... Joe Abley schrieb:
Hi Deguang, On 16-Jun-2006, at 12:18, Deguang Le wrote:To my understanding, in Shim6 protocol sepcifications, it specifies that the host is within a multihomed site, so it is regarded as a site multihoming solution.However, no matter the host is within a multihomed site or not, if only the host is multihomed and the given solution for solving the multihoming is a host-based solution. I think it belongs to a host multihoming solution.Besides, there is no fundamental reason why the shim6 solution could not support the host multihoming."Host multihoming" usually refers to a host which has multiple network interfaces. Since this is an issue of lexical convention and not technology, I did a quick google to try and survey common usage of the phrase. I found many references which support this definition, e.g.http://foldoc.org/?multihomed+host http://www.slac.stanford.edu/comp/net/policy/multi-homed.html http://docs.sun.com/app/docs/doc/806-0916/6ja853998?a=view RFC 1123 section 6.1.3.4 RFC 2205 section 3.9Clearly this is not an exhaustive review, but I will run with it for now :-)
According to your above definition, a host that is within a multihmed site has also multiple network interfaces. From this point of view, this situation descirbed in shim6 could also be regarded as host multihoming. right? :-)
I think these issues that you point out(e.g. the choice of egress interface and next-hop router that the host uses for a particular outbound datagram) should also be considered in shim6 since shim6 is a host-based approach. right? :-)There are aspects of host multihoming which are not part of the shim6 specification (e.g. the choice of egress interface and next-hop router that the host uses for a particular outbound datagram). In this sense, shim6 as it stands provides an inadequate specification for host multihoming.
Cheers, Deguang
It seems to me that, for this reason, "site multihoming" is a better phrase than "host multihoming". However, given the host-centric approach that shim6 takes to site multihoming, additional text to this effect would quite possibly lend clarity to the document in question.Thoughts? Joe