Huawei Quidway S5600 Series - Page 510

Operation Manual – 802.1x
Quidway S5600 Series Ethernet Switches-Release 1510 Chapter 1
802.1x Configuration
Huawei Technologies Proprietary
1-7
Supplicant
system
Sw itc h
RADIUS server
EAPoL
EAPoR
EAPoL-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
EAPoL-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port accepted
Handshake timer time o
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Port rejected
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port accepted
Handshake timer time o
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Port rejected
Supplicant
system
Sw itc h
RADIUS server
EAPoL
EAPoR
EAPoL-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
EAPoL-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
EAPoL
EAPoR
EAPoL-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
EAPoL-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port accepted
Handshake timer time o
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Port rejected
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port authorized
Handshake timer time out
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Supplicant
system
Sw itc h
RADIUS server
-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/MD5 Challenge
EAP-Success
EAP-Response/MD5 Challenge
RADIUS Access-Reque
(EAP-Response/Identi
RADIUS Access-Challen
(EAP-Request/MD5 Challe
st
ty)
ge
nge)
RADIUS Access-Accep
(EAP-Success)
RADIUS Access-Reques
(EAP-Response/MD5 Challe
t
t
nge)
Port accepted
Handshake timer time o
Handshake requesting packet
[EAP-Request/Identity]
Handshake response packet
[EAP-Response/Identity]
-Logoff
......
Port rejected
Figure 1-8 802.1x authentication procedure (in EAP relay mode)
The detailed procedure is as follows.
z A supplicant system launches an 802.1x client to initiate an access request
through the sending of an EAPoL-start packet to the switch, with its user name and
password provided. The 802.1x client program then forwards the packet to the
switch to start the authentication process.
z Upon receiving the authentication request packet, the switch sends an
EAP-request/identity packet to ask the 802.1x client for the user name.
z The 802.1x program responds by sending an EAP-response/identity packet to the
switch with the user name included. The switch then encapsulates the packet in a
RADIUS Access-Request packet and forwards it to the RADIUS server.
z Upon receiving the user name from the switch, the RADIUS server retrieves the
user name, finds the corresponding password by matching the user name in its
database, encrypts the password using a randomly-generated key, and sends the
key to the switch through an RADIUS access-challenge packet. The switch then
sends the key to the 802.1x client.