Patching

Hi all,

I'm new to Solaris. How can i make sure that all my servers are patched to the same level. When i do a uname -a, i see different level. How can i make sure that they are having the same patches. Any expert to guide me through pls?

eg.
ServerA#uname -a
SunOS ServerA 5.10 Generic_125100-10 sun4u sparc SUNW,Ultra-60

ServerB#uname -a
SunOS ServerB 5.10 Generic_127111-05 sun4u sparc SUNW,Ultra-Enterprise

ServerC#uname -a
SunOS ServerC 5.10 Generic_125100-09 sun4u sparc SUNW,Ultra-250