Atmel AVR2070 - page 40

40 AVR2070 8240B-AVR-06/09
Table A-5-11. Association response (direct)
R1 FCF – assoc rsp
0x8C63 Seq 03 PID 0x1234 R2 MAC addr 0x5555444433332222 R1 SA 0x0003 MAC 02 R2 SA 0x0006
R2 saves its parent's short address and its own short address.
A.5.5 Example 5 – End node E2 connects to network
This example shows an end node connecting to the network, through two routers R2
and R1.
E2 scans for routers, and selects R2 based on LQI/hops/RSSI. It then sends a direct
association request.
Table A-5-12. Association request (direct)
E2 FCF –assoc req
0xC863 Seq 05 PID 0x1234 R2 SA 0x0006 E2 MAC addr 0x8877665544332211 MAC 01 Parent SA 0x0006
R2 forwards the packet to R1, converting it to an “indirect association request”.
Table A-5-13. Association request (indirect)
R2 FCF –
assoc req
0x8863
Seq
05 PID 0x1234 R1 SA 0x0003 R2 SA 0x0006 MAC 01 Par SA 0x0006 E2 MAC addr 0x8877665544332211 Type 0x03
R1 forwards the packet to C.
Table A-5-14. Association request (indirect)
R1 FCF –
assoc req
0x8863
Seq
06 PID 0x1234 C SA 0x0000 R1 SA 0x0003 MAC 01 Par SA 0x0006 E2 MAC addr 0x8877665544332211 Type 0x03
C assigns E2 a short address, add E2's SA and Parent SA to its table, sends a
routing packet to E2, and then sends an association response to R1.
Table A-5-15. Association response (indirect)
C FCF – assoc rsp
0x8863 Seq 07 PID 0x1234 R1 SA 0x0003 C SA 0x0000 MAC 02 Parent SA 0x0006 E2 MAC ad 0x88776... E2 SA 0x0007
R1 forwards the packet to R2.
Table A-5-16. Association response (indirect)
R1 FCF – assoc rsp
0x8863 Seq 08 PID 0x1234 R2 SA 0x0006 R1 SA 0x0003 MAC 02 Par SA 0x0006 E2 MAC ad 0x88776... E2 SA 0x0007
R2 notices that the new node's parent is R2, and sends a “direct association
response” packet to E2, and stores E2's SA in its child table.
Table A-5-17. Association response (direct)
R2 FCF – assoc rsp
0x8C63 Seq 09 PID 0x1234 E2 MAC addr 0x887766... R1 SA 0x0003 MAC 02 E2 SA 0x0007