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Cisco Bug: CSCur19891 - 7600|12.2(33)SRE7a(ES)|node out of mgmt, vty sessions get locked & busy

Last Modified

Sep 14, 2019

Products (6)

  • Cisco IOS
  • Cisco Service Application Module for IP
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
  • Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks
  • Cisco 7600 Series Supervisor Engine 32 with Multilayer Switch Feature Card
  • Cisco 7600 Series Supervisor Engine 720 with Multilayer Switch Feature Card

Known Affected Releases

12.2(33)SRE7a

Description (partial)

Symptom:
lost the Telnet connection to customer's devices, connecting by console we can see the all VTY lines in idle state, and without sessions established, the form to restore the management is applying a switchover to refresh the lines VTY.

    Line       User       Host(s)              Idle       Location
*  0 con 0     telmexcisc idle                 00:00:00
   1 vty 0     ciscoana   idle                    3d18h 10.93.5.146
   2 vty 1     ciscoana   idle                    3d18h 10.93.5.146
   3 vty 2     ciscoana   idle                    3d18h 10.93.5.146
   4 vty 3     ciscoana   idle                    3d18h 10.93.5.146
   5 vty 4     ciscoana   idle                    3d18h 10.93.5.146
   6 vty 5     ciscoana   idle                    3d18h 10.93.5.146
   7 vty 6     ciscoana   idle                    3d18h 10.93.5.146
   8 vty 7     ciscoana   idle                    3d17h 10.93.5.146
   9 vty 8     ciscoana   idle                    3d17h 10.93.5.146
  10 vty 9     ciscoana   idle                    3d17h 10.93.5.146
  11 vty 10    ciscoana   idle                    3d17h 10.93.5.146
  12 vty 11    ciscoana   idle                    3d17h 10.93.5.146
  13 vty 12    ciscoana   idle                    3d17h 10.93.5.146
  14 vty 13    ciscoana   idle                    3d17h 10.93.5.146
  15 vty 14    ciscoana   idle                    3d17h 10.93.5.146
  16 vty 15    ciscoana   idle                    3d16h 10.93.5.146

Conditions:
Jun  4 16:50:09.781 DST: %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input queue full
AGSCXAVIO02-DIST2-09#
Jun  4 16:50:14.781 DST: %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input queue full
AGSCXAVIO02-DIST2-09#
Jun  4 16:50:24.782 DST: %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input queue full
AGSCXAVIO02-DIST2-09#
Jun  4 16:50:26.854 DST: %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input queue full
AGSCXAVIO02-DIST2-09#
Jun  4 16:50:27.870 DST: %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input queue full
AGSCXAVIO02-DIST2-09#
Jun  4 16:50:28.890 DST: %SNMP-3-INPUT_QFULL_ERR: Packet dropped due to input queue full
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  • Full Description (including symptoms, conditions and workarounds)
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