I had to search through various web sites with a similar problem. I have 2 identical AIX 6.1 servers, same LPARS, same TL level. One would allow me to connect to the share (Windows 2003), but the other box would throw:

Code:

There was an error connecting the share or the server.
Make sure the lsdev command shows that device nsmb0 is in
the Available state.  Also make sure that the share name,
user name and password are accurate.

In the end I checked my /etc/hosts files. The first server had:
10.137.ip1.ip2 server1.domain
and it would allow me to connect using the IP address.

The other box had:
10.137.ip1.ip2 server1.domain

and would not allow me to use the IP address. However, I can use the fully qualified domain name. Some inconsistency here, because 2 different servers have similar settings.

I then added:
10.137.ip1.ip2 server1 server1.domain

and these commands work:

Code:

mount -v cifs -n server1.domain/Admin -o fmode=777 /aaa /tmp/aaa
mount -v cifs -n server1/Admin -o fmode=777 /aaa /tmp/aaa

This one however does not work:

Code:

 mount -v cifs -n 10.137.ip1.ip2/Admin -o fmode=777 /aaa /tmp/aaa

Both servers are in a local LAN and no firewalls in the way, just the IP address could not be used on one the servers. I think the way a server is defined in /etc/hosts has an impact, check how many lines you have for the same server in which order, etc.

I hope this may help some people resolve a similar issue.

Moderator's Comments:

Please use code tags next time for your code and data. Thanks And thanks for sharing!