@Tengfei, Does that suggestion work for you or should we create an issue on SF0? Thomas
On Fri, Nov 11, 2016 at 8:50 PM, Yasuyuki Tanaka < yasuyuki9.tan...@toshiba.co.jp> wrote: > Hi Tengfei, > > I think an assumption there is that a node has no state with its > neighbors just after booting up or restarting. On the other hand, a > neighbor of them may have cells allocated for the node. To resolve > such a possible inconsistency, the node issues CLEAR to each of its > neighbors. > > Best, > Yatch > > On 2016/11/02 15:29, Tengfei Chang wrote: > >> All, >> >> For the decision when a node is restarted, the SF0 says: >> >> In order to define a known state after the node is restarted, a CLEAR >> command is issued to each of the neighbor nodes to enable a new >> allocation process. The 6P Initial Timeout Value provided by SF0 >> should allow for the maximum number of TSCH link-layer retries, as >> defined by Section 4.3.4 of [I-D.ietf-6tisch-6top-protocol < >> https://tools.ietf.org/html/draft-ietf-6tisch-6top-sf0-02#r >> ef-I-D.ietf-6tisch-6top-protocol>]. TODO/ >> REMARK: The initial timeout is currently under discussion. >> >> >> A little suggestion is DO NOT issue a clear command to previous parent >> until the nodes has reserved new cells to its new parent. This is to avoid >> the swing if the reservation failed to its new parent and changed back to >> previous parent. >> >> What do you think? >> >> Tengfei >> >> -- >> Chang Tengfei, >> Pre-Postdoctoral Research Engineer, Inria >> >> >> _______________________________________________ >> 6tisch mailing list >> 6tisch@ietf.org >> https://www.ietf.org/mailman/listinfo/6tisch >> >> > _______________________________________________ > 6tisch mailing list > 6tisch@ietf.org > https://www.ietf.org/mailman/listinfo/6tisch > -- _______________________________________ Thomas Watteyne, PhD Research Scientist & Innovator, Inria Sr Networking Design Eng, Linear Tech Founder & co-lead, UC Berkeley OpenWSN Co-chair, IETF 6TiSCH www.thomaswatteyne.com _______________________________________
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