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Operation Manual – 802.1x
Quidway S5600 Series Ethernet Switches-Release 1510
Chapter 1 802.1x Configuration
Huawei Technologies Proprietary
1-9
Supplicant
syst em
Switc h
RADIUS ser ver
EAPOL
RADIUS
EAPOL-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(CHAP-Response/MD5 Chal
st
lenge)
RADIUS Access-Acce
(CHAP-Success)
pt
Port acc ept ed
Hands hake ti mer ti me out
Hands hake request pac ket
[EAP-Request/Identity]
Hands hake reply pac ket
[EAP-Response/Identity]
EAPOL-Logoff
......
Port reject ed
Supplicant
syst em
Switc h
RADIUS ser ver
EAPOL
RADIUS
EAPOL-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(CHAP-Response/MD5 Chal
st
lenge)
RADIUS Access-Acce
(CHAP-Success)
pt
Port acc ept ed
Hands hake ti mer ti me out
Hands hake request pac ket
[EAP-Request/Identity]
Hands hake reply pac ket
[EAP-Response/Identity]
EAPOL-Logoff
......
Port reject ed
Supplicant
syst em
Switc h
RADIUS ser ver
EAPOL
RADIUS
EAPOL-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(CHAP-Response/MD5 Chal
st
lenge)
RADIUS Access-Acce
(CHAP-Success)
pt
Port acc ept ed
Hands hake ti mer ti me out
Hands hake request pac ket
[EAP-Request/Identity]
Hands hake reply pac ket
[EAP-Response/Identity]
EAPOL-Logoff
......
Port reject ed
Figure 1-9
802.1x authentication procedure (in EAP terminating mode)
The authentication procedure in EAP terminating mode is the same as that in the EAP
relay mode except that the randomly-generated key in the EAP terminating mode is
generated by the switch, and that it is the switch that sends the user name, the
randomly-generated key, and the supplicant system-encrypted password to the
RADIUS server for further authentication.
1.1.5 802.1x Timer
In 802.1 x authentication, the following timers are used to ensure that the supplicant
system, the switch, and the RADIUS server interact in an orderly way:
z
Transmission timer (
tx-period
): This timer sets the tx-period and is triggered by
the switch in one of the following two cases: The first case is when the client
requests for authentication. The switch sends a unicast request/identity packet to
a supplicant system and then enables the transmission timer. The switch sends