Configuring Secure Shell (SSH)
Messages Related to SSH Operation
Message
Client public key file corrupt or not
found. Use 'copy tftp pub-key-file <ip-
addr> <filename>' to download new file.
Download failed: overlength key in key
file.
Download failed: too many keys in key
file.
Download failed: one or more keys is not
a valid public key.
Meaning
The client key does not exist in the switch. Use copy
tftp to download the key from a TFTP server.
The public key file you are trying to download has one of the
following problems:
• A key in the file is too long. The maximum key length is
1024 characters, including spaces. This could also mean
that two or more keys are merged together instead of
being separated by a <CR><LF>.
• There are more than ten public keys in the key file and
switch total. Delete some keys from the switch or file. The
switch does not detect duplicate keys.
• One or more keys in the file is corrupted or is not a valid
public key.
Refer to “To Create a Client-Public-Key Text File” on page
26 for information on client-public-key properties.
Error: Requested keyfile does not exist.
The client key does not exist in the switch. Use copy
tftp to download the key from a TFTP server.
Generating new RSA host key. If the
After you execute the generate ssh [dsa | rsa]
cache is depleted, this could take up to
command, the switch displays this message while it
two minutes.
is generating the key.
Host RSA key file corrupt or not found.
The switch’s key is missing or corrupt. Use the
Use ' generate ssh [dsa | rsa]' to cre-
generate ssh [dsa | rsa] command to generate a new
key for the switch.
ate new host key.
Logging Messages
There are event log messages when a new key is generated and zeroized for
the server:
ssh: New <num-bits> -bit [rsa | dsa] SSH host key installed
ssh: SSH host key zeroized
There are also messages that indicates when a client public key is installed or
removed:
ssh: <num-bits>-bit [rsa | dsa] client public key [installed | removed] ([manager|
operator] access) (key_comment)
Note: Only up to 39 characters of the key comment are included in the event log
message.
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