This is actually NetWare 2.15, not 2.11, but it is an early 2.15 release from late 1988.

Unfortunately the most important part is missing -- the core OS object files needed to link the NetWare kernel. These should have been on three floppies labeled ANDOBJ, ADOBJ, and OSOBJ.

The image file "Advanced Novell Netware[PC](1of1).img" is one of those floppies except there are about 15 tracks missing at the beginning of side 0, so it's no good.

All the rest seems to be there and the images are good, but without the OS object files there's no way to create a NetWare server. That said, the images may still be useful to someone with a differently incomplete NetWare 2.15 dump.