On 2010-07-29 00:32, Bob Hinden wrote: > Lucy, > > On Jul 28, 2010, at 1:58 PM, Yong Lucy wrote: > >> >> What is flow label usage? >> >> IMO: it enforces that a set of packets with the same flow label has to be >> carried through the networks in the same path or belong to the same >> application at host. Is that correct? Is there other usage of flow label? > > RFC 3697 defines it as: > > A flow is a sequence of packets sent from a particular source to a > particular unicast, anycast, or multicast destination that the source > desires to label as a flow. A flow could consist of all packets in a > specific transport connection or a media stream. However, a flow is > not necessarily 1:1 mapped to a transport connection. > > It is intended to label a flow. It does not specify a path.
And that was *not* an oversight by the authors or the WG. On the contrary, RFC 3697 intentionally did not define any usage model for the flow label, or even a purpose. It was limited to defining the behaviour of source hosts. Brian -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
