03-19-2012 02:18 AM - edited 03-10-2019 06:55 PM
We have 802.1x with radius server.
c2960 configured to allow only one device per port with no Mac-Bypass and no critical auth.
From time to time user seems to get multiple authentications on single port with single mac-address.
So we get several sessions on port with the same login, mac (but different session-id).
Command "dot1x re-auth int" doesn't clear those sessions. Neither do "force-unauthorized" or "shut/noshut". Only thing that helps is reboot switch.
Happens with different users.
Anybody seen this issue?
IOS 12.2(46)SE
03-19-2012 02:27 PM
Could you please post your config and also "show authentication session
03-20-2012 12:53 AM
Sure. Tried to make it short.
Config for 802.1x-aaa:
!
aaa new-model
!
!
aaa group server radius default
server X.X.X.X auth-port 12345 acct-port 12346
!
aaa authentication login default group radius enable
aaa authentication dot1x default group radius
aaa authorization exec default group radius if-authenticated
aaa authorization network default local group radius
aaa authorization reverse-access default group radius
aaa accounting suppress null-username
aaa accounting update periodic 1
aaa accounting dot1x default start-stop group radius
aaa accounting exec default start-stop group radius
aaa accounting network default start-stop group radius
aaa accounting system default start-stop group radius
!
!
aaa session-id common
!
dot1x system-auth-control
!
!
!
interface FastEthernet0/48
switchport access vlan 1398
switchport mode access
dot1x pae authenticator
dot1x port-control auto
dot1x violation-mode shutdown
spanning-tree portfast
spanning-tree link-type point-to-point
!
!
radius-server attribute 44 include-in-access-req
radius-server attribute 44 extend-with-addr
radius-server attribute 188 format non-standard
radius-server attribute 218 mandatory
radius-server attribute 32 include-in-accounting-req format %i %h %d
radius-server attribute 55 include-in-acct-req
radius-server attribute list att
attribute 30-31,44
!
radius-server host X.X.X.X auth-port 12345 acct-port 12346 key keykeykey
radius-server vsa send accounting
!
sh dot1x int fa 0/48 det
Dot1x Info for FastEthernet0/48
-----------------------------------
PAE = AUTHENTICATOR
PortControl = AUTO
ControlDirection = Both
HostMode = SINGLE_HOST
Violation Mode = SHUTDOWN
ReAuthentication = Disabled
QuietPeriod = 60
ServerTimeout = 0
SuppTimeout = 30
ReAuthPeriod = 3600 (Locally configured)
ReAuthMax = 2
MaxReq = 2
TxPeriod = 30
RateLimitPeriod = 0
Dot1x Authenticator Client List Empty
Port Status = UNAUTHORIZED
And right now, while port is UNAUTHORIZED we have 2 sessions as follows:
sh aaa user all
--------------------------------------------------
Unique id 34974 is currently in use.
Accounting:
log=0x208241
Events recorded :
CALL START
ATTR REPLACE
NET UP
INTERIM START
VPDN NET UP
update method(s) :
PERIODIC
update interval = 60
Outstanding Stop Records : 0
Dynamic attribute list:
0244DC34 0 00000001 connect-progress(44) 4 Auth Open
0244DC48 0 00000001 pre-session-time(272) 4 0(0)
0244DC5C 0 00000001 elapsed_time(339) 4 4828941(49AF0D)
0244DC70 0 00000001 input-giga-words(111) 4 2(2)
0244DC84 0 00000001 output-giga-words(250) 4 8(8)
024A8C10 0 00000001 bytes_in(112) 4 119041621(7186E55)
024A8C24 0 00000001 bytes_out(252) 4 3588031221(D5DD02F5)
024A8C38 0 00000001 pre-bytes-in(268) 4 7373(1CCD)
024A8C4C 0 00000001 pre-bytes-out(269) 4 8204(200C)
024A8C60 0 00000001 paks_in(113) 4 45940138(2BCFDAA)
024A8CB0 0 00000001 paks_out(253) 4 46979788(2CCDACC)
024A8CC4 0 00000001 pre-paks-in(270) 4 68(44)
024A8CD8 0 00000001 pre-paks-out(271) 4 61(3D)
No data for type EXEC
No data for type CONN
NET: Username=(n/a)
Session Id=000088AD Unique Id=0000889E
Start Sent=0 Stop Only=N
stop_has_been_sent=N
Method List=0
Attribute list:
024CAA00 0 00000001 session-id(336) 4 34989(88AD)
024CAA14 0 00000001 start_time(342) 4 Jan 23 2012 16:22:08
--------
No data for type CMD
No data for type SYSTEM
No data for type RM CALL
No data for type RM VPDN
No data for type AUTH PROXY
8: Username=157102
Session Id=000088AD Unique Id=0000889E
Start Sent=1 Stop Only=N
stop_has_been_sent=N
Method List=226B3E4 : Name = default
Attribute list:
0244DB94 0 00000001 session-id(336) 4 34989(88AD)
0244DBA8 0 00000001 start_time(342) 4 Jan 23 2012 16:22:08
0244DBBC 0 00000009 audit-session-id(599) 24 0AC5010200001C45A5C67429
--------
No data for type IPSEC-TUNNEL
No data for type RESOURCE
No data for type 11
No data for type 12
No data for type CALL
No data for type VPDN-TUNNEL
No data for type VPDN-TUNNEL-LINK
Debg: No data available
Radi: 2032FD8
Interface:
TTY Num = -1
Stop Received = 0
Byte/Packet Counts till Call Start:
Start Bytes In = 993512241 Start Bytes Out = 3867828098
Start Paks In = 23586320 Start Paks Out = 28511581
Byte/Packet Counts till Service Up:
Pre Bytes In = 993519614 Pre Bytes Out = 3867836302
Pre Paks In = 23586388 Pre Paks Out = 28511642
Cumulative Byte/Packet Counts :
Bytes In = 1112561235 Bytes Out = 3160900227
Paks In = 69526526 Paks Out = 75491430
StartTime = 16:22:08 GMT+5 Jan 23 2012
AuthenTime = 16:22:08 GMT+5 Jan 23 2012
Component = DOT1X
Authen: service=8021X type=EAP method=RADIUS
Kerb: No data available
Meth: No data available
PreA: No data available
General:
Unique Id = 0000889E
Session Id = 000088AD
Attribute List:
024A8C10 0 00000001 port-type(174) 4 Ethernet
024A8C24 0 00000009 interface(170) 16 FastEthernet0/48
024A8C38 0 00000009 dnis(50) 17 00-18-B9-F5-5B-30
024A8C4C 0 00000009 clid(37) 17 48-5B-39-EA-26-7C
PerU: No data available
--------------------------------------------------
Unique id 34976 is currently in use.
Accounting:
log=0x10000208241
Events recorded :
CALL START
ATTR REPLACE
NET UP
INTERIM START
VPDN NET UP
SESSION INFO
update method(s) :
PERIODIC
update interval = 60
Outstanding Stop Records : 0
Dynamic attribute list:
024CAA00 0 00000001 connect-progress(44) 4 Auth Open
024CAA14 0 00000001 pre-session-time(272) 4 2(2)
024CAA28 0 00000001 elapsed_time(339) 4 4828961(49AF21)
024CAA3C 0 00000001 input-giga-words(111) 4 2(2)
024CAA50 0 00000001 output-giga-words(250) 4 8(8)
024CAAA0 0 00000001 bytes_in(112) 4 119021816(71820F8)
024CAAB4 0 00000001 bytes_out(252) 4 3588011179(D5DCB4AB)
024CAAC8 0 00000001 pre-bytes-in(268) 4 6219(184B)
024CAADC 0 00000001 pre-bytes-out(269) 4 7005(1B5D)
024CAAF0 0 00000001 paks_in(113) 4 45939933(2BCFCDD)
0244DB94 0 00000001 paks_out(253) 4 46979618(2CCDA22)
0244DBA8 0 00000001 pre-paks-in(270) 4 59(3B)
0244DBBC 0 00000001 pre-paks-out(271) 4 51(33)
No data for type EXEC
No data for type CONN
NET: Username=(n/a)
Session Id=000088AF Unique Id=000088A0
Start Sent=0 Stop Only=N
stop_has_been_sent=N
Method List=0
Attribute list:
024A8C10 0 00000001 session-id(336) 4 34991(88AF)
024A8C24 0 00000001 start_time(342) 4 Jan 23 2012 16:22:18
--------
No data for type CMD
No data for type SYSTEM
No data for type RM CALL
No data for type RM VPDN
No data for type AUTH PROXY
8: Username=157102
Session Id=000088AF Unique Id=000088A0
Start Sent=1 Stop Only=N
stop_has_been_sent=N
Method List=226B3E4 : Name = default
Attribute list:
024CAA00 0 00000001 session-id(336) 4 34991(88AF)
024CAA14 0 00000001 start_time(342) 4 Jan 23 2012 16:22:18
024CAA28 0 00000009 audit-session-id(599) 24 0AC5010200001C49A5C6990F
--------
No data for type IPSEC-TUNNEL
No data for type RESOURCE
No data for type 11
No data for type 12
No data for type CALL
No data for type VPDN-TUNNEL
No data for type VPDN-TUNNEL-LINK
Debg: No data available
Radi: 2032F58
Interface:
TTY Num = -1
Stop Received = 0
Byte/Packet Counts till Call Start:
Start Bytes In = 993533200 Start Bytes Out = 3867849339
Start Paks In = 23586534 Start Paks Out = 28511761
Byte/Packet Counts till Service Up:
Pre Bytes In = 993539419 Pre Bytes Out = 3867856344
Pre Paks In = 23586593 Pre Paks Out = 28511812
Cumulative Byte/Packet Counts :
Bytes In = 1112561235 Bytes Out = 3160900227
Paks In = 69526526 Paks Out = 75491430
StartTime = 16:22:18 GMT+5 Jan 23 2012
AuthenTime = 16:22:19 GMT+5 Jan 23 2012
Component = DOT1X
Authen: service=8021X type=EAP method=RADIUS
Kerb: No data available
Meth: No data available
PreA: No data available
General:
Unique Id = 000088A0
Session Id = 000088AF
Attribute List:
0244DB94 0 00000001 port-type(174) 4 Ethernet
0244DBA8 0 00000009 interface(170) 16 FastEthernet0/48
0244DBBC 0 00000009 dnis(50) 17 00-18-B9-F5-5B-30
0244DBD0 0 00000009 clid(37) 17 48-5B-39-EA-26-7C
PerU: No data available
--------------------------------------------------
PS. Have no command "show authentication"
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