WARN: Failed to connect to the Switch, Exception: Failed Connect to the Switch, Exception: read error: Input/output error. /usr/bin/ssh: symbol lookup error: /usr/bin/ssh: undefined symbol: FIPS_mode

=======================================================================================================================================[Aug  4 2015 04:49:30 : STAFBASE  ] [0] FRAMEWORK: Executing STAF command: staf localhost VTAF_UTIL sshconnect agent <ip address>xxx.xxx.xxx.xxx userid xxxx password xxxxxxxx port 22

[Aug  4 2015 04:49:36 : STAFBASE  ] [0] FRAMEWORK: RC:5001

[Aug  4 2015 04:49:36 : DEFAULTAUT] [0] WARN: Failed Connect to the HOST, Exception: SSH connect Request Failed with RC: 5001

[Aug  4 2015 04:49:36 : DEFAULTAUT] [0] WARN: SSH is currently supported for VMware Workstation

[Aug  4 2015 04:50:18 : NETSESSION] [0] FRAMEWORK: Session Object Created Successfully.

[Aug  4 2015 04:50:18 : DEFAULTAUT] [0] WARN: Failed to connect to the Switch, Exception: Failed Connect to the Switch, Exception:  read error: Input/output error. /usr/bin/ssh: symbol lookup error: /usr/bin/ssh: undefined symbol: FIPS_mode.

[Aug  4 2015 04:50:18 : DEFAULTAUT] [0] WARN: SSH and Telnet are currently supported only for Physical Switches

=======================================================================================================================================

2015-08-04 05:28:50 PDT [Aug  4 2015 05:28:50 : DEFAULTAUT] [0] WARN: Failed to connect to the Switch, Exception: Failed Connect to the Switch, Exception:  read error: No child processes. /usr/bin/ssh: symbol lookup error: /usr/bin/ssh: undefined symbol: FIPS_mode

2015-08-04 05:28:50 PDT .

2015-08-04 05:28:50 PDT [Aug  4 2015 05:28:50 : DEFAULTAUT] [0] WARN: SSH and Telnet are currently supported only for Physical Switches

2015-08-04 05:28:58 PDT [Aug  4 2015 05:28:50 : TESTHASH  ] [0] ERROR: Failed to execute processSetup for the Setup : Failed to execute createHOMObj for the Setup : invalid credentials for <IP address if Switch>xxx.xxx.xxx.xxx

=======================================================================================================================================

I am working on NAS storage hardware certification against vSphere 5.5 and getting above errors while running Verification test on vmware workbench 3.0 and ESXi 5.5. Also I want to know that is it mandatory to use the VMware compatible switchs listed. i.e. (brcd|csco|sum|fdry|nexus|force|netgear|dell)