AIX

So, you when you do
nslookup <tsm server> you get what?

If you are relying on local /etc/hosts file for name resolution, then go ahead and add the entry for tsm server on the client's hosts file.

no we are not using DNS to resolve this

since DNS resolve only 10.10.10.x IPs that are used by our customer and they added an entry in /etc/host to resolve by name and IP this AIX-TSM Server

Ok. So, this x.x.20.11 is a private network.

So, how did you configure the IP (ent1 - 10.10.20.11)?

I assume you did

Code:

smitty chinet --> selected en1 -->
INTERNET ADDRESS (dotted decimal)                  [10.10.20.11]
  Network MASK (hexadecimal or dotted decimal)       [xx.xx.xx.xx]
Rest values default

Now the question is, have you correctly feeded the subnet mask value?

Show me the subnet mask value from client and also from TSM server
You can get it by running
ifconfig en1 ( if you want to grep netmask you can do so)
Value will be something like 0xffffff00 (this is an example)

Post the values from TSM server for 20.x network and also from client for 20.x network.

yes I did there is nothing difficult in setting mask: 255.255.255.0

Ok,
Nothing more is coming to my mind now, at this point what I can say is

Add tsm server (20.x) to /etc/hosts file of client.

Make sure you follow the correct naming convention for both, if you go with default hostname it will try to connect using 10.10.10.x network.

Also, check what is the IP address of tsm server on client's dsm.sys file
You can find it under /usr/tivoli/tsm/client/ba/bin(64)
earlier version it will be bin and later version it will be bin64
And look for TCPServeraddress in dsm.sys file

Run dsmc from client and see if it connecting to tsm server and you can do some queries
q files

thanks a lot ibmtechh, yes it's weird and seeing Windows virtual Machines working fine makes think in something about AIX

I will try to do the last things you are telling me

Some questions which might shed a bit more light on the issue:

- you said you use 2 physical NICs in your LPAR. There is an etherchannel formed of the two NICs. How are those NICs connected? Are there different switches, which VLANs are configured on the ports, etc..

- we have seen mixed data, once from a production server, once from a test server. If your procuction server is the one described in #8, having two interfaces "10.10.10.11" and "10.10.20.11" and your subnet masks are "255.255.255.0" then your routing for "en1" is definitely wrong. With a subnet mask of 24 bit your interface "10.10.20.11" is in the network range "10.10.20.0-255". In other words, your default gateway is not reachable from your second interface.

- in addition, your routing table in #8 shows two entries directing "10.10.10.11" and "10.10.20.11" over "127.0.0.1". What is that supposed to do? If these both would work (gladly they do not) you would effectively prohibiting any network traffic by directing any outgoing traffic to the loopback device.

I hope this helps.

bakunin