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4. Once the AP transmits the new keys to all clients in the supplicant list, it begins using
the new TX key (Key4). At this time all supplicants are using Key3 as their TX key.
5. The key period expires. The AP creates two new random keys, loads them into the
inactive authenticator key indexes (Keys 1 and 2 in this example), and repeats the
process (starting at step 3).
AP Client
Key # Encryption TX/RX State TX/RX Encryption
Key1 aaaaaaaaaaaaaa Inactive aaaaaaaaaaaaaa
Key2 bbbbbbbbbbbbb Inactive bbbbbbbbbbbbb
Key3 cccccccccccccc RX Active TX cccccccccccccc
Key4 ddddddddddddd TX Active RX ddddddddddddd
AP Client
Key # Encryption TX/RX State TX/RX Encryption
Key1 eeeeeeeeeeeee Inactive aaaaaaaaaaaaaa
Key2 fffffffffffff Inactive bbbbbbbbbbbbb
Key3 cccccccccccccc RX Active TX cccccccccccccc
Key4 ddddddddddddd TX Active RX ddddddddddddd