Jason Gao wrote:
Jason Gao wrote:
...
--- IPv6 flow label assignment
Transport layer may set a 'control' bit in the IPv6 Traffic Class octet
of the initiating packet
during the setup phase of a connection.
The edge router inspects the control bit. If it is set, the edge router
can further inspect the
packet, and reserve resource as required by the piggybacked resource
reservation header in the
transport layer packet, allocate and/or assign a flow label to the
expected connection, put the flow
label in the flow label field of the initiating acknowledgement packet.
No. There is no such usage of the traffic class octet. See RFC 2474.
Also, only the source host of a packet may set the flow label.
See draft-ietf-ipv6-flow-label-03.txt
Brian
Well, both the draft and RFC 2474 are not the final standard.
RFC 2474 is a Proposed Standard, which means that fundamental
changes are extremely unlikely. The flow label draft is indeed
still a draft, but there is very strong WG consensus that flow
labels must be immutable.
And both the traffic class octet and the flow label field are subject to
further discuss.
If you are referring to the text in RFC 2460, the traffic class is
definitively specified by RFC 2474. The flow label draft is intended
to be definitive, as soon as it's agreed.
Brian