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IETF78 July 2010 Routing metrics ID -08 draft-ietf-roll-routing-metrics-08

IETF78 July 2010 Routing metrics ID -08 draft-ietf-roll-routing-metrics-08. JP Vasseur jpv@cisco.com Mijeon Kim mjkim@kt.com Kris Pister pister@eecs.berkeley.edu Nicolas Déjean nicolas.dejean@coronis.com Dominique Barthel dominique.barthel@orange-ftgroup.com. Changes in -07 over -06.

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IETF78 July 2010 Routing metrics ID -08 draft-ietf-roll-routing-metrics-08

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  1. IETF78 July 2010Routing metrics ID -08draft-ietf-roll-routing-metrics-08 JP Vasseur jpv@cisco.com Mijeon Kim mjkim@kt.com Kris Pister pister@eecs.berkeley.edu Nicolas Déjean nicolas.dejean@coronis.com Dominique Barthel dominique.barthel@orange-ftgroup.com

  2. Changes in -07 over -06 • Published June 10th • Decouple metrics and objective function (as per RPL I-D) • OF controls DAG structure while • delegating cost computation • Allow multiple DAG Metric Containers • RPL option now 256 bytes max • Prompted need for container extension

  3. Changes in -08 over -07 • Published July 9th • Terminology cleanup, legends, nits • A given metric/constraint object can appear no more than once as a metric and no more than once as a constraint • NE, E-E field use for a constraint • Latency, first sub-object must be currently observed latency

  4. Changes in -08 over -07 (ctd) • Added Node Fanout Ratio • Constraint or Metric • Comparison function for scalar metrics is implicit, known from metric type • Multiple NE constraints • Multiple metrics as tie-breakers • Appear in precedence order • Ordering in DAG Metric Container is significant

  5. Next ? • Local/Global definition • Compound metrics • Welcome real world usage • Weighted average, polynomial

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