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Cisco Bug: CSCup58585 - SSH Failed to allocate pty

Last Modified

Jul 06, 2018

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

Router was configure to accept 5 VTY at a single time but only accept up to 2 concurrent session and was dropped with an error of

RP/0/RSP0/CPU0:May 29 12:03:42.753 : SSHD_[65896]: %SECURITY-SSHD-3-ERR_GENERAL : Failed to allocate pty
RP/0/RSP0/CPU0:May 29 12:03:45.165 : SSHD_[65789]: %SECURITY-SSHD-6-INFO_GENERAL : Client closes socket connection 

Snippet of configuration:
line default
 exec-timeout 15 0
 session-timeout 15
vty-pool default 0 4
ssh server v2
ssh server vrf default ipv4 access-list TRUSTED-v4-MGMT ipv6 access-list TRUSTED-v6-MGMT
ssh server logging
ssh timeout 30
ssh server session-limit 10


Related Community Discussions

module error not resolved
in ASR 9K router, we have below error, how to resolve? SSHD_[65895]: %SECURITY-SSHD-3-ERR_GENERAL : Failed to write to pty LDP-4-PEER_DUP_ADDRS : VRF 'default' (0x60000000), 1 Duplicate address(es) advertised by more than one peer
Latest activity: Apr 11, 2017
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  • Status
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