Atmel AVR2070 - Manual (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