Radius Capture

This scenario shows how to capture and filter RADIUS accounting messages after successful authentication.

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Test RADIUS Accounting With 802.1x Authentication

Description

DUT0 is configured with an 802.1x-authenticated interface and DUT1 acts as an 802.1x supplicant. RADIUS accounting messages are captured in DUT0.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.215.168.64/24
set interfaces ethernet eth1 address 192.168.100.1/24
set interfaces ethernet eth1 authenticator 802.1x max-retransmissions 2
set interfaces ethernet eth1 authenticator aaa accounting list1
set interfaces ethernet eth1 authenticator aaa authentication list1
set interfaces ethernet eth1 authenticator log-level debug
set interfaces ethernet eth1 authenticator mode only-802.1x
set interfaces ethernet eth1 authenticator quiet-period 60
set interfaces ethernet eth1 authenticator reauth-period 0
set system aaa group radius radgroup1 server serv1
set system aaa list list1 method 1 group radius radgroup1
set system aaa server radius serv1 address 10.215.168.1
set system aaa server radius serv1 encrypted-key U2FsdGVkX1+gLKkG+qvsrKBuj1QqxdBoEzOqMuiF9EmFa0zPA2n/CCu4ibAoXHRyX8HwgLEdHAVbOpb8fuGY/g==
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Ping the IP address 10.215.168.1 from DUT0:

admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1
Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data.
64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.353 ms

--- 10.215.168.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.353/0.353/0.353/0.000 ms

Note

Start packet capture in DUT0 to filter RADIUS messages

Step 3: Set the following configuration in DUT1 :

set interfaces ethernet eth1 address 192.168.100.2/24
set interfaces ethernet eth1 supplicant encrypted-password U2FsdGVkX1//JVNEVOuSN0CUhUMMpn9PKv/ALvEXXg8=
set interfaces ethernet eth1 supplicant username testing
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 4: Run the command interfaces ethernet eth1 supplicant show status on DUT1 and check whether the output contains the following tokens:

Authorized
Show output
---------------------------------------------------
Field                      Value
---------------------------------------------------
EAP State                                   SUCCESS
EAP TLS Cipher          ECDHE-RSA-AES256-GCM-SHA384
EAP TLS Version                             TLSv1.2
PAE State                             AUTHENTICATED
Supplicant Port Status                   Authorized
WPA State                                 COMPLETED

Step 5: Ping the IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.405 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.405/0.405/0.405/0.000 ms

Note

Stop packet capture in DUT0 and expect the following RADIUS messages:

Show output
tcpdump: listening on eth0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
15:34:49.125234 de:ad:be:ef:6c:00 > fe:22:4e:ac:a9:9f, ethertype IPv4 (0x0800), length 183: (tos 0x0, ttl 64, id 25757, offset 0, flags [none], proto UDP (17), length 169)
    10.215.168.64.49207 > 10.215.168.1.1813: [bad udp cksum 0x6696 -> 0xa0cf!] RADIUS, length: 141
        Accounting-Request (4), id: 0x0b, Authenticator: d0de542c0abffe7e3fe025b0a2568c8e
          Acct-Status-Type Attribute (40), length: 6, Value: Start
            0x0000:  0000 0001
          Acct-Authentic Attribute (45), length: 6, Value: RADIUS
            0x0000:  0000 0001
          User-Name Attribute (1), length: 9, Value: testing
            0x0000:  7465 7374 696e 67
          Called-Station-Id Attribute (30), length: 20, Value: DE-AD-BE-EF-6C-01:
            0x0000:  4445 2d41 442d 4245 2d45 462d 3643 2d30
            0x0010:  313a
          Service-Type Attribute (6), length: 6, Value: Framed
            0x0000:  0000 0002
          Calling-Station-Id Attribute (31), length: 19, Value: DE-AD-BE-EF-6C-11
            0x0000:  4445 2d41 442d 4245 2d45 462d 3643 2d31
            0x0010:  31
          Acct-Session-Id Attribute (44), length: 18, Value: 6CEA5C38AE907A01
            0x0000:  3643 4541 3543 3338 4145 3930 3741 3031
          NAS-Port-Type Attribute (61), length: 6, Value: Ethernet
            0x0000:  0000 000f
          Connect-Info Attribute (77), length: 13, Value: Unsupported
            0x0000:  556e 7375 7070 6f72 7465 64
          NAS-Port-Id Attribute (87), length: 6, Value: eth1
            0x0000:  6574 6831
          Event-Timestamp Attribute (55), length: 6, Value: Fri Jul 24 15:34:49 2026
            0x0000:  6a63 8619
          Acct-Delay-Time Attribute (41), length: 6, Value: 00 secs
            0x0000:  0000 0000
1 packet captured
2 packets received by filter
0 packets dropped by kernel
admin@osdx$

Step 6: Run the command interfaces ethernet eth1 authenticator show stats on DUT0 and check whether the output matches the following regular expressions:

Authentication Mode\s+802.1X
Session User MAC\s+de:ad:be:ef:6c:11
Session User Name\s+testing
Show output
---------------------------------------------
Field                   Value
---------------------------------------------
Access Challenges                           9
Authentication Backend                 RADIUS
Authentication Failures                     0
Authentication Mode                    802.1X
Authentication Status     Authorized (802.1X)
Authentication Successes                    1
EAPoL frames (Rx)                          11
EAPoL frames (Tx)                          11
Quiet Period                               60
Reauthenticate                          FALSE
Reauthenticate Period                       0
Session Time                                0
Session User MAC            de:ad:be:ef:6c:11
Session User Name                     testing

Test RADIUS Accounting With MAB Authentication

Description

DUT0 is configured with a MAB-authenticated interface. RADIUS accounting messages are captured in DUT0.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.215.168.64/24
set interfaces ethernet eth1 address 192.168.100.1/24
set interfaces ethernet eth1 authenticator aaa accounting list1
set interfaces ethernet eth1 authenticator aaa authentication list1
set interfaces ethernet eth1 authenticator log-level debug
set interfaces ethernet eth1 authenticator mode only-MAB
set interfaces ethernet eth1 authenticator quiet-period 60
set interfaces ethernet eth1 authenticator reauth-period 0
set system aaa group radius radgroup1 server serv1
set system aaa list list1 method 1 group radius radgroup1
set system aaa server radius serv1 address 10.215.168.1
set system aaa server radius serv1 encrypted-key U2FsdGVkX18b7vgR+PvXKtol92XQqrikIq1K3w8I7gV5liIZTxDszQNs7DsjSEAM13JuQosLYh9qpAyuvf/fAA==
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Ping the IP address 10.215.168.1 from DUT0:

admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1
Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data.
64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.204 ms

--- 10.215.168.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.204/0.204/0.204/0.000 ms

Note

Start packet capture in DUT0 to filter RADIUS messages

Step 3: Set the following configuration in DUT1 :

set interfaces ethernet eth1 address 192.168.100.2/24
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 4: Ping the IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.325 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.325/0.325/0.325/0.000 ms

Note

Stop packet capture in DUT0 and expect the following RADIUS messages:

Show output
tcpdump: listening on eth0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
15:35:02.739338 de:ad:be:ef:6c:00 > fe:22:4e:ac:a9:9f, ethertype IPv4 (0x0800), length 193: (tos 0x0, ttl 64, id 53781, offset 0, flags [none], proto UDP (17), length 179)
    10.215.168.64.36145 > 10.215.168.1.1813: [bad udp cksum 0x66a0 -> 0x32b0!] RADIUS, length: 151
        Accounting-Request (4), id: 0x01, Authenticator: faae89a9b4b9aca7a1609878ce7a779a
          Acct-Status-Type Attribute (40), length: 6, Value: Start
            0x0000:  0000 0001
          Acct-Authentic Attribute (45), length: 6, Value: Local
            0x0000:  0000 0002
          User-Name Attribute (1), length: 19, Value: de:ad:be:ef:6c:11
            0x0000:  6465 3a61 643a 6265 3a65 663a 3663 3a31
            0x0010:  31
          Called-Station-Id Attribute (30), length: 20, Value: DE-AD-BE-EF-6C-01:
            0x0000:  4445 2d41 442d 4245 2d45 462d 3643 2d30
            0x0010:  313a
          Service-Type Attribute (6), length: 6, Value: Framed
            0x0000:  0000 0002
          Calling-Station-Id Attribute (31), length: 19, Value: DE-AD-BE-EF-6C-11
            0x0000:  4445 2d41 442d 4245 2d45 462d 3643 2d31
            0x0010:  31
          Acct-Session-Id Attribute (44), length: 18, Value: 54C07FC023478568
            0x0000:  3534 4330 3746 4330 3233 3437 3835 3638
          NAS-Port-Type Attribute (61), length: 6, Value: Ethernet
            0x0000:  0000 000f
          Connect-Info Attribute (77), length: 13, Value: Unsupported
            0x0000:  556e 7375 7070 6f72 7465 64
          NAS-Port-Id Attribute (87), length: 6, Value: eth1
            0x0000:  6574 6831
          Event-Timestamp Attribute (55), length: 6, Value: Fri Jul 24 15:35:02 2026
            0x0000:  6a63 8626
          Acct-Delay-Time Attribute (41), length: 6, Value: 00 secs
            0x0000:  0000 0000
1 packet captured
2 packets received by filter
0 packets dropped by kernel
admin@osdx$

Step 5: Run the command interfaces ethernet eth1 authenticator show stats on DUT0 and check whether the output matches the following regular expressions:

Authentication Mode\s+MAB
Session User MAC\s+de:ad:be:ef:6c:11
Session User Name\s+N/A
Show output
-------------------------------------------
Field                  Value
-------------------------------------------
Access Challenges                         0
Authentication Backend               RADIUS
Authentication Failures                   0
Authentication Mode                     MAB
Authentication Status      Authorized (MAB)
Authentication Successes                  1
EAPoL frames (Rx)                         0
EAPoL frames (Tx)                         0
Quiet Period                             60
Reauthenticate                        FALSE
Reauthenticate Period                     0
Session Time                              1
Session User MAC          de:ad:be:ef:6c:11
Session User Name                       N/A