Hung - Tag - Fryguy's Bloghttps://hugo.fryguy.net/tags/hung/Hung - Tag - Fryguy's BlogHugo -- gohugo.ioenWed, 06 Mar 2013 23:15:14 +0000VTY Session on a Router Won't Clear?https://hugo.fryguy.net/2013/03/06/vty-session-on-a-router-wont-clear/Wed, 06 Mar 2013 23:15:14 +0000Fryguyhttps://hugo.fryguy.net/2013/03/06/vty-session-on-a-router-wont-clear/[]2
Had a small problem today that was interesting, but not unique.  I have seen this problem before, but realized that maybe most people might not know how to fix it. I think the normal approach that people take is a reload of the device, not always a good thing to do on a production network in the middle of the day.
So the  depicts is a VTY session that is unclearable via the normal clear command route.  When you do a who, you see that someone is connected to VTY 0 for an extended period of time:

Switch1#who
    Line       User       Host(s)              Idle       Location
   1 vty 0                idle                     6w4d HackerHost.virtua.com.br
*  2 vty 1     jfry       idle                 00:00:00 192.168.0.1
  Interface      User        Mode                     Idle     Peer Address
Switch1#

They are not logged in as there is no User listed, but you can see they have been idle for 6 weeks and 4 days.
So the first think that you would do would be to clear the session and do a who again to make sure they are gone.

Switch1#clear line vty 0
[confirm]y [OK]
Switch1#who
    Line       User       Host(s)              Idle       Location
   1 vty 0                idle                     6w4d HackerHost.virtua.com.br
*  2 vty 1     jfry       idle                 00:00:00 192.168.0.1
  Interface      User        Mode                     Idle     Peer Address
Switch1#

Odd, they are still there.  Well, maybe its VTY 1 and not __, lets clear that one instead:

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