Re: Flow Label: 12 bits mutable and 8 bits immutable

2010-08-11 Thread Rémi Després
Le 10 août 2010 à 18:09, Michael Richardson a écrit : Rémi == Rémi Després remi.desp...@free.fr writes: Rémi RFC 3697 isn't concerned with ASes, and doesn't need to be. Rémi The proposal is only that, where load balancing is performed, Rémi 0 FLs MAY be replaced by meaningful

Re: Flow Label: 12 bits mutable and 8 bits immutable

2010-08-11 Thread Rémi Després
Le 10 août 2010 à 21:06, Fred Baker a écrit : I would find that surprising. There are ample cases where the originator of a high data rate flow (sensor data from a radio telescope to a number cruncher, to pick one example) might want to use the flow label to send data from one session

RE: Flow Label: 12 bits mutable and 8 bits immutable

2010-08-11 Thread Pascal Thubert (pthubert)
Pascal [Pascal] The FL based proposal for RPL uses 12 mutable bits. Pascal They are used as an in-band control plane that checks the Pascal consistency of routing states along a path. Those states can Pascal easily get out of sync due to the nature of the links, but

RE: ROLL choice to not use the Flow Label

2010-08-11 Thread Pascal Thubert (pthubert)
Hi Brian: The Hop by Hop is certainly the clean solution. The trouble is that it requires additional bytes in every packet for the header and for the IP-in-IP encapsulation that goes with it; yet RPL operates in a domain where devices can be strictly constrained in energy and frames can be very

Re: ROLL choice to not use the Flow Label

2010-08-11 Thread Michael Richardson
Pascal == Pascal Thubert (pthubert) pthub...@cisco.com writes: Pascal Hi Brian: Pascal The Hop by Hop is certainly the clean solution. Pascal The trouble is that it requires additional bytes in every Pascal packet for the header and for the IP-in-IP encapsulation Pascal

Re: Consensus call on adopting:draft-krishnan-6man-rs-mark-06.txt

2010-08-11 Thread Behcet Sarikaya
I support adoption of this draft, I think it is needed. Regards, Behcet - Original Message From: Brian Haberman br...@innovationslab.net To: IPv6 WG Mailing List ipv6@ietf.org Sent: Tue, August 10, 2010 1:08:26 PM Subject: Consensus call on

Re: [Roll] Flow Label: 12 bits mutable and 8 bits immutable

2010-08-11 Thread Philip Levis
On Aug 11, 2010, at 3:00 AM, Pascal Thubert (pthubert) wrote: Pascal [Pascal] The FL based proposal for RPL uses 12 mutable bits. Pascal They are used as an in-band control plane that checks the Pascal consistency of routing states along a path. Those states can Pascal

Re: ROLL choice to not use the Flow Label

2010-08-11 Thread Philip Levis
On Aug 10, 2010, at 2:53 PM, Brian E Carpenter wrote: Thanks for all the enlightment about ROLL. My personal conclusion is that the ROLL considerations are too complex and too subtle to be compatible with using a general-purpose IPv6 header field (i.e. the flow label) for ROLL purposes.