rcp/permission/nfs problems

[Rick Hawkins <rhawkins@iastate.edu>]

i'm having rcp problems with nfs.  unfortuneately, i have now idea what
rcp is.

ONe of the machines gets a response of 

# /etc/init.d/netstd_nfs start
Starting remote filesystem services: nfsd mountd ugidd pcnfsd bwnfsd
rpc: RPC: U
nable to receive; errno = Connection refused


while starting ( i tried manually doing it).  however, it happily mounts
the other--manually, not automatically.  i have the following fstab: 

 <file system>     <mount point>   <type>  <options>   <dump>  <pass>
/dev/hda2               /               ext2    defaults    0       1
/dev/hda1               none            swap    sw          0       0
proc                  /proc             proc    defaults    0       0
/dev/hdb1             /usr              ext2    defaults    0       2
pc3138.econ:/      /pc3138.econ         nfs     defaults    0       3

but i have to manually mount.

i can't mount the other direction, though:

# mount -t nfs pc3140.econ:/ /pc3140.econ/
rpc mount: RPC: Unable to receive; errno = Connection refused

both are mountable by ALL: .iastate.edu in hosts.allow.

help ! :)

rick

more particularly, what does this rpc stuff mean: