A client is upgrading to solaris 10 sharing wtih nfs , but all the clients 
are solaris 8 . He asks is it caompatible and I'm shocked that i haven't the 
faintest idea . I'm reading the docs and it says its tcp and not udp . So 
what happens if a solaris 8 client tries to mount an nfs  share on solaris 
10 . Any info or pointers to docs would be appreciated
Thanks
George 

george2 wrote:
> A client is upgrading to solaris 10 sharing wtih nfs , but all the clients 
> are solaris 8 . He asks is it caompatible and I'm shocked that i haven't the 
> faintest idea . I'm reading the docs and it says its tcp and not udp . So 
> what happens if a solaris 8 client tries to mount an nfs  share on solaris 
> 10 . Any info or pointers to docs would be appreciated

It just works.  The nfs server in Solaris 10 supports NFSv2, NFSv3, and NFSv4.

Neal

george2 wrote:
> A client is upgrading to solaris 10 sharing wtih nfs , but all the clients 
> are solaris 8 . He asks is it caompatible and I'm shocked that i haven't the 
> faintest idea . I'm reading the docs and it says its tcp and not udp . So 
> what happens if a solaris 8 client tries to mount an nfs  share on solaris 
> 10 . Any info or pointers to docs would be appreciated

I'm shocked that you don't know, too!  ;)

Solaris 10 supports NFS versions 2 and 3 over tcp and udp,
and NFS version 4 over tcp.  See "man nfsd"

The Solaris 8 clients will request version 3 as usual and will
not even know that version 4 exists.

"george2" <george@twig.tk> writes:

>A client is upgrading to solaris 10 sharing wtih nfs , but all the clients 
>are solaris 8 . He asks is it caompatible and I'm shocked that i haven't the 
>faintest idea . I'm reading the docs and it says its tcp and not udp . So 
>what happens if a solaris 8 client tries to mount an nfs  share on solaris 
>10 . Any info or pointers to docs would be appreciated


The bad news is: NFSv4 and NFSv3 are not compatible.
The good news is: The NFS server supports both protocols at the same time.


There's no UDP vs TCP thing; all versions of NFS run on UDP as well as TCP;
in fact, they can be made to run on anything which supports SunRPC/ONCRPC

Casper
-- 
Expressed in this posting are my opinions.  They are in no way related
to opinions held by my employer, Sun Microsystems.
Statements on Sun products included here are not gospel and may
be fiction rather than truth.

Casper H.S. Dik wrote:
> There's no UDP vs TCP thing; all versions of NFS run on UDP as well as TCP;
> in fact, they can be made to run on anything which supports SunRPC/ONCRPC

nfs(4) says that NFS version 4 is not supported on UDP.

NFSD_PROTOCOL=ALL

          Start nfsd over the specified protocol only.  Equivalent
          to the -p option in nfsd. ALL is equivalent to -a on the
          nfsd command line. Mutually exlusive of NFSD_DEVICE. One
          or  the  other  of NFSD_DEVICE and NFSD_PROTOCOL must be
          commented out. For the UDP protocol, only version 2  and
          version  3  service is established. NFS Version 4 is not
          supported for the UDP protocol.