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Unable to load large SSH client key files on NetIron v6.0a

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TitleUnable to load large SSH client key files on NetIron v6.0a
Symptoms
On NetIron v6.0a, the following error is seen when loading SSH client key files of size > 4096 bytes:

telnet@NetIron MLX-32 Router(config)# ip ssh pub-key-file tftp 172.29.196.96 dsa.pub
downloading public key file, please wait...
Finished downloading public key file!
Invalid Public Key file length 10387

On earlier Netiron versions (5.x), the same file can be loaded successfully.

telnet@NetIron MLX-32 Router(config)# ip ssh pub-key-file tftp 172.29.196.96 dsa.pub
downloading public key file, please wait...
.
Finished downloading public key file!
Finished parsing public key file!

Environment
  • NI 6.0.0a
Cause
This is because the key file size is limited to 4096 bytes on 6.0a. This is roughly equivalent to four 1024-bit keys.
 
Resolution
Upgrade to NI 6.0.0b
Additional notes
There is no workaround apart from loading only key file size which is less that 4096 bytes.

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