Hi Daniel, A single Context Info option (CO) is needed indeed for a 6lowpan network for consistency, I agree. If this is not clear, we would clarify - perhaps in the assumption section.
Thanks, -Samita > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf > Of Daniel Gavelle > Sent: Tuesday, July 06, 2010 4:25 AM > To: Zach Shelby > Cc: 6lowpan > Subject: Re: [6lowpan] Size of NS+ARO+SLLAO in nd-10 > > If there are multiple LBR's, with different PIO's, the network still needs a > single CO. For example, a possible Smart Grid network would be to have: An > LBR in the meter with a PIO of the back haul to the utility and a prefix > assigned by the utility. A second LBR in a broadband router with general > access to the Internet and a prefix assigned by an ISP. The LBRs would need > to be configured to cooperate correctly so there is only one set of context > information in the network but each LBR may be advertising a different PIO. > > I am not sure in this case if both LBRs advertise both PIO's or each > advertises its own PIO. If both advertise both PIOs, the optimisation is > lost and the CO needs to be carried explicitly. If each just advertises its > own PIO, there is potential for confusion as two different default COs may > be derived. > > Daniel. > > > > > > > We really can't mess with PIO, but how about this. We make a rule that is > a single PIO is present in an RA, then it is assumed that this is CID=0 by > default. > > > > -- > __________________________________________________ > Daniel Gavelle, Software Engineer > Tel: +44 114 281 2655 > Fax: +44 114 281 2951 > Jennic Ltd, Furnival Street, Sheffield, S1 4QT, UK Comp Reg No: 3191371 > Registered In England http://www.jennic.com > __________________________________________________ > _______________________________________________ > 6lowpan mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6lowpan _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
