Technical data

System Logs
© 2012 Meru Networks, Inc. Troubleshooting 297
Key Exchange Station Log Events
Key exchange is a security method in which cryptographic keys are exchanged
between users. A station goes through this stage of connection when any of these are
enabled: WPA, WPA2, WPA PSK, WPA2 PSK, MIXED or MIXED_PSK.
| 00:66:77:c2:02:01 | Mac
Filtering | Radius authentication
succeeded (vlan 0)
Radius authentication is
enabled, and a Radius accept
response message is received.
A mobile station goes to the next
stage or assignment.
| 00:66:77:c2:02:06 | Mac
Filtering | Radius authentication
failed
Radius authentication is
enabled, and a Radius reject
response message is received.
A mobile station cannot proceed
to the next stage or assignment.
Event Condition That Triggers Event Interpretation
Event Condition That Triggers Event Interpretation
00:16:6f:3b:17:a9 |1X
Authentication |M1 <msg
type=EAPOL_KEY> PTK sent
The system sends a first key
exchange message.
This is common for WPA, WPA2,
WPA PSK, WPA2 PSK, MIXED
or MIXED_PSK. The system
tries transmission up to 4 times
and then aborts the key
exchange transaction if it doesn't
receive an M2 message by
sending 802.11 deauth.
M2 <pkt type=EAPOL_KEY>
MIC Verified
The system receives a key
exchange message, M2, from a
station, and MIC is verified
correctly.
This is common for WPA, WPA2,
WPA PSK, WPA2 PSK, MIXED
or MIXED_PSK.
00:16:6f:3b:17:a9 |1X
Authentication | M3 <msg
type=EAPOL_KEY> WPA PTK
Negotiation sent
The system sends a third key
exchange message for WPA or
WPA-PSK modes.
The system tries transmission up
to 4 times, and then aborts the
key exchange transaction if it
doesn't receive M2 message by
sending 802.11 deauth.
00:16:6f:3b:17:a9 |1X
Authentication | M4 <pkt
type=EAPOL_KEY> <key
type=Unicast Key> Key Pairwise
The system receives a fourth key
exchange message from a
station for WPA or WPA-PSK
modes.
The system tries transmission up
to 4 times, and then aborts the
key exchange transaction if it
doesn't receive M2 message by
sending 802.11 deauth.