This is not a very good place to ask this question, if you want
to get a helpful answer. You are more likely to get help if you
post to an appropriate Linux newsgroup - I think there is one
called comp.os.linux.networking, or possibly you could try
comp.os.linux.hardware.
When you post there, you could also mention:
what version(s) of the Linux kernel you are using and what
happens if you try something else like ping, telnet or ftp instead
of NFS.
> I am installing RedHat Linux5.2 and having problem for new
> network card of 3Com-3C905B-TX to access HP server on
> HP-UX10.20 through NFS.
>
> The objective for RedHat5.2 installation is to acivate PC with
> partition created and install and configure with Linux NFS
> mounting to HP server for application use.
>
> Some background information:
>
> We have TWO HP servers, (a) one with the HP-UX 10.20 with
> RedHat Linux 5.2 and (b) one with the HP-UX 9.07 with
> redHat Linux 5.1.
>
> Network cards are (a) 3Com-3C905B-TX (New card), (b)
> 3Com-3C509B-TX (old card)
>
> CASE #1: Old network card, 3C509B-TX on either Pentium I
> or Pentium II able to NFS configuration and mount to HP-UX
> 9.07 with Linux 5.1 BUT UNABLE WITH HP-UX 10.20 with
> Linux 5.2.
>
> No error message, JUST HANG.
>
> CASE #2: New network card, 3C905B-TX on either Pentium I
> or II UNABLE to NFS configuration and mount to HP-UX 9.07
> or HP-UX 10.20
>
> error message : mount clntudp_create : RPC : mapper failure
> - RPC : Timed out
