Hi Tom, > -----Original Message----- > From: Tom Herbert [mailto:t...@herbertland.com] > Sent: Saturday, May 21, 2016 12:14 AM > To: Ted Lemon > Cc: Xuxiaohu; int-area@ietf.org > Subject: Re: [Int-area] Call for adoption of draft-xu-intarea-ip-in-udp-03 > > On Fri, May 20, 2016 at 5:31 AM, Ted Lemon <mel...@fugue.com> wrote: > > On Fri, May 20, 2016 at 6:13 AM, Xuxiaohu <xuxia...@huawei.com> wrote: > >> > >> Thanks for your comment. Note that it’s WG adoption call rather than > WGLC. > >> If I understand it correctly, as long as it’s worthwhile to provide > >> fine-grained load-balancing of Softwire service traffic by leveraging > >> the UDP tunnels, the WG should adopt it and then work on it, e.g., > >> addressing those issues as you mentioned. > > > > > > The WG shouldn't adopt it unless there is a clear motivation for doing so, > > and no existing solutions to the same problem. That is the case you need > > to make. What various people are saying is that they don't believe you > > have made that case. That is how it appears to me as well. > > > There is an existing solution to the same problem. GUE allows encapsulation of > IPv4 and IPv6, as well as other IP protocols (the GUE header indicates > encapsulated protocol by IP number). The only material between GUE > encapsulation of IP and IP in UDP is additional four byte header and > associated > processing of that. I don't think we've seen a use case where avoiding that > overhead is critical motivation.
Before comparing GUE and IP-in-UDP (Note that both of them are built on UDP tunnels), it seems necessary to reach a rough WG consensus on the motivation of leveraging UDP tunnel for carrying softwire traffic firstly. Once the consensus is reached, we can then discuss whether we need a simple UDP tunnel header, a powerful UDP tunnel header (i.e., GUE header+UDP header) or both. Best regards, Xiaohu > Tom > > > > > _______________________________________________ > > Int-area mailing list > > Int-area@ietf.org > > https://www.ietf.org/mailman/listinfo/int-area > > _______________________________________________ Int-area mailing list Int-area@ietf.org https://www.ietf.org/mailman/listinfo/int-area
