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Period
#
Description
0
Main life key A A-0-0-0
1
Main life A+B
2
Main life B+C
3
Main life C+D
4
Main life D+E
5
Main life E+F
Table 6 Alternative Schemes gives a scheme where at each period two keys
are in use; at the end of each period, the oldest key is no longer valid and
needs to be replaced at all stations. Advantage of this scheme versus the
scheme in
Table 5 Single Key - Transition Period
frequent configuration changes at all Radio Link Modules.
Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
C79000-G8976-C171-01
AP Configuration
Keys 1-2-3-4
Tx
1
A-B-0-0
2
0-B-C-0
3
0-0-C-D
4
E-0-0-D
1
E-F-0-0
2
Out-
STA
ward
Configuration(s)
Key
Keys 1-2-3-4 Tx
A
A-B-C-D
B
=
C
=
D
=
E
A-B-C-D
E-F-G-H
F
E-F-G-H
is that it requires less
In-ward
Key
1
A
1|2 A | B
2|3 B | C
3|4 C | D
4
D
1
E
1|2 E | F
189
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