Guest

Preview Tool

Cisco Bug: CSCun45035 - Failed to obtain a VTY no TTYs available to handle the connection

Last Modified

Mar 06, 2019

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

4.2.1.K9SEC

Description (partial)

Symptom:
Debug output

RP/0/RSP0/CPU0:Feb 15 17:14:15.007 CST: TELNETD_[65893]: Created environment variable string 'TERM=network'
RP/0/RSP0/CPU0:Feb 15 17:14:15.007 CST: TELNETD_[65893]: Requesting VTY from TTY Server
RP/0/RSP0/CPU0:Feb 15 17:14:15.153 CST: TELNETD_[65893]: %IP-TELNETD-3-ERR_CONNECT : Failed to obtain a VTY for a session: ''tty-server' detected the 'resource not available' condition 'There are no TTYs available to handle the connection'' 
RP/0/RSP0/CPU0:Feb 15 17:14:15.153 CST: TELNETD_[65893]: Error obtaining a VTY (0xc1943600, ''tty-server' detected the 'resource not available' condition 'There are no TTYs available to handle the connection'')

Conditions:
this is seen when a blocked IP is trying to access the node. THis is not exactly a vty resource issue
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.