04-09-2015 02:58 PM
H ITeam
I am getting logged out from Cisco device
While checking log message I can see %SYS-6-TTY_EXPIRE_TIMER: (absolute timer expired, tty 579
line vty 0 3
exec-timeout 15 0
privilege level 15
transport input telnet ssh
transport output ssh
line vty 4
exec-timeout 15 0
privilege level 15
transport input telnet ssh
transport output ssh
line vty 5 15
exec-timeout 0 1
privilege level 15
no exec
transport input none
transport output none
Please suggest in regard to this issue
Regards
Sajan Thomas
04-09-2015 03:40 PM
Hello Sajan,
Under the line vty 0 3, the "exec-timeout 15(minutes) 0(seconds)" command will disconnect your session after 15 minutes of inactivity.
If you would like to disable the timer, you would enter
line vty 0 3
exec-timeout 0
which would leave your session logged in indefinitely.
Disabling it is fine for a lab environment, but normally this should be enabled for security.
Hope this helps,
if so, please rate.
Thanks.
04-09-2015 06:24 PM
Hi Cehill
I truly agree with you, and I am aware of that. But here the problem is this is get terminated even it is active mode. Mean if we are logged in and checking some routing etc.. it will get terminated.
Regards
Sajan Thomas
04-09-2015 07:31 PM
I see "absolute-timer" in the log message.
How are you connecting to the device?
I don't see absolute-timer on the vty ports?
Do you see absolute-timer anywhere in your config.
*********************************************************************************
Bug CSCui94802 states the absolute-timer may be in the wrong location in the config, so it could be in the config, but not listed under the line vty.
Absolute-timeout and logout-warning at incorrect location in config
04-10-2015 03:16 AM
Hi Cehil
Exactly! There I am also stuck! Nowhere in configuration. Anychance this can be enabled in TACACS?
Regards
Sajan Thomas
04-10-2015 04:59 AM
Hey Sajan,
Just to confirm its not in the config, enter the following commands, please.
show run | i absolute
show run | i autocommand
If these commands return anything, its probably the culprit.
If not, do you mind doing a show tech and uploading it, and I'll take a look at it.
Thanks.
05-06-2020 07:03 AM
Hello @Sajan Thomas ,
I wondering if you got the issue resolved. Looks like it could be a TACACS/ISE issue. See this post:
https://community.cisco.com/t5/switching/sys-6-tty-expire-timer-absolute-timer-expired/td-p/4064672
You may want to run the debug tacacs events (depending on the platform you are using)
Check to see if the TACACS profile you are using has a time-out setting configured.
HTH,
Barry
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