What you want to do is setup preferred routes for each interface.

Lets assume your addresses are

10.0.0.1 - 10.0.0.12

The next hop is 10.0.0.254

Usually 1 route will exist

*DFTROUTE to 10.0.0254

what that tells the system is route from ANY local address

If you have a DFTROUTE for EACH address (using the local address as the
preferred interface)

The System i will now always route out the same address as the inbound
request.

This avoids a lot of network routing issues, especially NAT issues.


Walter Scanlan
Senior Software Engineer
WPLC products for IBM i for Power Systems including AS/400, iSeries and
System i
507-286-6088
Cell: 507-990-4539
wscanlan@xxxxxxxxxx





From:
rob@xxxxxxxxx
To:
Lotus Domino on the iSeries / AS400 <domino400@xxxxxxxxxxxx>
Date:
05/16/2008 07:53 AM
Subject:
Re: SNDDST



We have 11 Domino partitions on one i lpar. The i lpar has 12 TCP/IP
interfaces. One for tradition i stuff and eleven others spread out one
each for the dpars.

notes.ini
...
TCPIP=TCP, 0, 15, 0
TCPIP_TcpIpAddress=0,10.10.1.186:1352
...

The biggest problem with this is with other TCP/IP applications on the i.
For instance, if you initiate an FTP session on your i it may come out on
one of your dpar addresses. Which is normally no problem unless you have
a zealot on your network staff who has a fit because he now has to allow
12 different address in to ftp to a particular client or server. You can
minimize this by ensuring that the IP address used by the i appears first
on NETSTAT *IFC on your i. You can further minimize this by
CHGTCPIFC INTNETADR('...') AUTOSTART(*NO)
for each of your domino addresses and only start them shortly before
starting the dpars.
ie QSTRUP program
STRTCP
/* Do some other stuff to allow most applications to get settled */
STRTCPIFC INTNETADR('...') /* DPAR such-and-such */
STRDOMSVR '...' /* Domino mail partition */
STRTCPIFC INTNETADR('...') /* DPAR ... */
STRDOMSVR ... /* You get the point? */

Now if someone does an
ENDTCPSVR *FTP
CHGFTPA ...
STRTCPSVR *FTP
like I did yesterday, then you kind of fall back on who's first in NETSTAT

*IFC.


Rob Berendt

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