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Unable to access the Catalyst 3750 switch stack with the Secure Shell login
Scenario 1: During the attempt to connect with the use of a Secure Shell (SSH) access into the switch, the prompt for password shows up and the login fails. The HTTP access work fine with that user name and password.
Scenario 2: When the 3750 switches are stacked together and when all 16 vty lines are configured with the transport input ssh command, then remote console access from slave switches does not work. This problem is seen in Cat3750 switches that run crypto software, in one of these software releases:
Once you are done, use the username: swadmin and password 0 in order to login.
Note: Straight (non-SSH) Telnets are refused when you use the transport input ssh command and when you want to allow both SSH and Telnet access through the vty lines, use the transport input ssh telnet command.
Solution for Scenario 2— If the switch access is configured for only SSH, and the switch runs the software releases mentioned in the Scenario 2, then access the stack with only the console port on the master switch. Otherwise, you can upgrade to Cisco IOS Software Release 12.2(25)SE and later, which can be downloaded from Cisco Downloads.