IoT Workshop RPL Tutorial April 2011 - Internet Architecture Board
IoT Workshop RPL Tutorial April 2011 - Internet Architecture Board
IoT Workshop RPL Tutorial April 2011 - Internet Architecture Board
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Physical Network<br />
3<br />
LBR<br />
1.5<br />
1.3<br />
Step 3<br />
X<br />
ETX (=1 when not indicated)<br />
=> reflect the link quality<br />
Battery operated node used a<br />
(hard) constraint<br />
11 12 13<br />
1.1<br />
1.8<br />
1.3<br />
2<br />
1<br />
1.6<br />
1.7<br />
LBR<br />
21<br />
1.1 2.9 1.9<br />
22<br />
4<br />
2.5<br />
23<br />
24<br />
1.4 1.3<br />
*<br />
2.1<br />
2.2 2.4 2.7<br />
31 32<br />
33<br />
34<br />
35<br />
41 42 43<br />
44<br />
45<br />
4<br />
46<br />
11 12 13<br />
21<br />
22<br />
23 24<br />
The DAG (Direct Acyclic Graph) continues to build<br />
Step 1<br />
LBR<br />
DIO message multicasted to all-<br />
<strong>RPL</strong>-nodes by the root<br />
Final<br />
LBR<br />
3<br />
1.5<br />
1.3<br />
11 12 13<br />
11 12 1.8 13<br />
1.1<br />
2<br />
1<br />
1.6<br />
1.7<br />
Step 2<br />
LBR<br />
21<br />
1.9<br />
22<br />
2.5<br />
23<br />
24<br />
1.4 1.3<br />
11 12 13<br />
Router runs an algorithm to choose a parent based on an objective and<br />
metrics/constraint (best quality path, highest bandwidth link,….)<br />
2.4 2.7 *<br />
31 32 33 34 35<br />
41 42 43 44 45 46
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