SSH or Telnet operation into the device fails

Assuming a correct IP address and correct login credentials, failure to access the device using SSH or Telnet could be for one of the following reasons:

• SSH or Telnet is disabled. (Verify by entering show telnet server status or show ssh server status.)
• The management port is down.
• Access to the management interface is denied by an ACL.
• The device CPU is overloaded.