nfs mount not working

[rightsidedown]

Hello All. I have two systems that I am trying to do a nfs mount in between. The first system is AIX 5.1 (sys1) and the other is AIX 5.2 (sys2). When I run the following command:
mount sys1:/tmp /mnt
it comes back with the following error:
NFS server ibm02 not responding still trying
However, I can ping and ssh between both systems. Does anyone have any idea of what the problem is? Thanks for your help.

 

[p5wizard]

Is NFS/portmapper started on the server side?

ps -ef|grep portmap
ps -ef|grep nfsd
ps -ef|grep biod
ps -ef|grep mountd
ps -ef|grep statd

use smitty nfs (go thru the menus - I don't know them by heart) to start the NFS daemons if necessary

 

[rightsidedown]

I greped the above stuff and they all show up.
/usr/sbin/portmap
/usr/sbin/nfsd 3891
/usr/sbin/biod 6
/usr/sbin/rpc.mountd
/usr/sbin/rpc.statd

 

[p5wizard]

is sys1 and ibm02 just different names for the same server?

mount sys1[/color red]:/tmp /mnt
it comes back with the following error:
NFS server ibm02[/color red] not responding still trying

 

[kHz]

You can try this:
Telnet to the server and log in as root.

cd to the /etc directory

Enter stopsrc -g nfs.

Enter stopsrc -s portmap.

Enter rm -rf state sm sm.bak xtab rmtab.

Enter startsrc -s portmap.

Enter startsrc -g nfs.

Enter exportfs -a.

showmount -e servername

 

[rightsidedown]

Sorry about the typo...ibm02 is sys1. Sys1 is the server and sys2 is the client. Another thing to add is the mount works on all of our other systems except this one. Thanks.

 

[rightsidedown]

I tried everything that KHz recommended and it didn't work. Thanks though.

 

[p5wizard]

are both servers on the same network?

is there a router or sth else in between?

 

[plamb]

sound like you might have a firewall blocking ports

 

[p5wizard]

I wouldn't want to try to NFS mount thru a firewall...

 

[plamb]

I do it all the time

 

[rightsidedown]

Thanks for all your help. They are not going through a firewall and they are on the same network. We were able to do an nfs mount with upd instead of tcp (not sure if there is a downside to that). I also ended up having to call IBM and they said this is a known issue and we need to load APAR IY51942. There is a timing issue that is fixed. What is happening is the client is flooding the server with packets and the server cannot respond in time...at least that is IBMs fix.