[SGIArtist]

EDIT: I've solved the issue by mounting from the terminal:

Code:

mount -t nfs 192.168.1.4:/mnt/usb1 /nfsshare

I've also added the following to /etc/fstab so it auto mounts in the future

Code:

192.168.1.4:/mnt/usb1 /nfsshare nfs rw,bg 0 0

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Thanks for all the help. Here are some of the results:

Result of chkconfig
   
NFS is set to ON

Result of showmount -e 192.168.1.4
   
It seems to be able to see the exports.

Exports file:
   
I set the parameters to the example given in the comment section of the file for NFS v3.

I added the nfs file after googling Raion's suggestion.

/etc/sysconfig/nfs
   
This is a copy of a sample file I found on the internet with NFS v3 set to yes.

rpcinfo output
   


The NFS on IRIX is set to AutoFS (I changed it to AutoFS after taking the below picture):

   

I don't have much experience with Linux or stuff like this so any help is welcome.