RE: TCP Preferred Interface (was Native Domino - to LPAR or not to LPAR, that is the question.) -- MIDRANGE-L

Rob,

I doubt it will make any difference with traffic on the same subnet, or matter to Domino.

We used it on the Default Route to the Internet because some of the connections from our system (via Telnet) were appearing to customers Firewalls to be coming from IP addresses other than our main IP address (they had their Firewalls programmed for just the one IP address, not our entire subnet).

In your original scenario it sounded like you had a similar problem with FTP to a barcode printer showing the traffic coming from another interface. Assuming the barcode printer is not on the same subnet, creating a route for it and using the Preferred Interface should solve that problem.

Neil Palmer, Cambridge, Ontario, Canada

(This account not monitored for personal mail,
remove the last two letters before @ for that)

--- On Tue, 6/10/08, rob@xxxxxxxxx <rob@xxxxxxxxx> wrote:

From: rob@xxxxxxxxx <rob@xxxxxxxxx>
Subject: RE: TCP Preferred Interface (was Native Domino - to LPAR or not to LPAR, that is the question.)
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Received: Tuesday, June 10, 2008, 4:06 PM
So, if I have 10.10.1.5 for "traditional" i5
stuff, and 10.10.1.6 for a
Domino server and I set the preferred address to 10.10.1.5
will domino
traffic from the one server to another Domino server now
show as coming
from 10.10.1.5? Does that matter to Domino?

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

Neil Palmer <neilpalmer400mr@xxxxxxxx>
Sent by: midrange-l-bounces@xxxxxxxxxxxx
06/10/2008 03:03 PM
Please respond to
Midrange Systems Technical Discussion
<midrange-l@xxxxxxxxxxxx>

To
Midrange Systems Technical Discussion
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Subject
RE: TCP Preferred Interface (was Native Domino - to LPAR or
not to LPAR,
that is the question.)

Rob,

Sorry for the delay in replying, and for confusing you on
the TCP
Interface/Preferred Interface.

The Preferred Interface is set up when you create a TCP
Route.
For example, this ensures all traffic out to the Internet
shows as coming
from 10.9.9.11 regardless of the several other interfaces
created on the
system:

Display TCP/IP Route

Route destination . . . . . . . . . . : *DFTROUTE
Subnet mask . . . . . . . . . . . . . : *NONE
Type of service . . . . . . . . . . . : *NORMAL
Next hop . . . . . . . . . . . . . . . : 10.9.9.254
Preferred binding interface . . . . . : 10.9.9.11
Maximum transmission unit . . . . . . : *IFC
Duplicate route priority . . . . . . . : 5
Route metric . . . . . . . . . . . . . : 1
Route redistribution . . . . . . . . . : *NO

Neil Palmer, Cambridge, Ontario, Canada

(This account not monitored for personal mail,
remove the last two letters before @ for that)

--- On Thu, 6/5/08, rob@xxxxxxxxx <rob@xxxxxxxxx>
wrote:

From: rob@xxxxxxxxx <rob@xxxxxxxxx>
Subject: RE: Native Domino - to LPAR or not to LPAR,

that is the
question.

To: "Midrange Systems Technical Discussion"

<midrange-l@xxxxxxxxxxxx>

Received: Thursday, June 5, 2008, 8:17 AM
Which one is "preferred interface"?
Add TCP/IP Interface (ADDTCPIFC)
Internet address . . . . . . . . >

'10.10.1.69'

Line description . . . . . . . . > LANLINSYS

Name,

*LOOPBACK...
Subnet mask . . . . . . . . . . >
'255.255.254.0'
Alias name . . . . . . . . . . . *NONE
Associated local interface . . . *NONE
Type of service . . . . . . . . *NORMAL

*MINDELAY,

*MAXTHRPUT
Maximum transmission unit . . . *LIND

576-16388,

*LIND
Autostart . . . . . . . . . . . *YES *YES,

*NO

PVC logical channel identifier

001-FFF

+ for more values
X.25 idle circuit timeout . . . 60 1-600

X.25 maximum virtual circuits . 64 0-64
X.25 DDN interface . . . . . . . *NO *YES,

*NO

TRLAN bit sequencing . . . . . . *MSB *MSB,

*LSB

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

Neil Palmer <neilpalmer400mr@xxxxxxxx>
Sent by: midrange-l-bounces@xxxxxxxxxxxx
06/04/2008 06:33 PM
Please respond to
Midrange Systems Technical Discussion
<midrange-l@xxxxxxxxxxxx>

To
Midrange Systems Technical Discussion
<midrange-l@xxxxxxxxxxxx>
cc

Subject
RE: Native Domino - to LPAR or not to LPAR, that is

the

question.

Rob,

Doesn't putting the Preferred Interface in the TCP
Interface when you
create it solve that problem? (You can't go back

and

change it to add
Preferred Interface, you have to delete and recreate

the

interface).

...Neil

Neil Palmer, Cambridge, Ontario, Canada

(This account not monitored for personal mail,
remove the last two letters before @ for that)

--- On Wed, 6/4/08, rob@xxxxxxxxx

<rob@xxxxxxxxx>

wrote:

From: rob@xxxxxxxxx <rob@xxxxxxxxx>
Subject: RE: Native Domino - to LPAR or not to

LPAR,

that is the
question.

To: "Midrange Systems Technical

Discussion"

<midrange-l@xxxxxxxxxxxx>

Received: Wednesday, June 4, 2008, 12:10 PM
One other issue with Domino on the same lpar...
If your network people are nuts about locking

stuff

down

and you've
created a separate tcp interface for each domino

server and

one for i;
your client sessions emanating from the i may

bind to

one

of the domino ip
addresses, and drive the network people bonkers.

For

example
10.10.1.5 may be an address for domino server A
10.10.1.6 may be the address for normal i stuff
Now, on the i I initiate a FTP client session to

a

barcode

printer
somewhere. Network people lock it down so that

only

10.10.1.6 may talk to
the barcode printer. However, my ftp session

comes

from

10.10.1.5
because when I type in FTP I can't tell it

which

interface to use so it
grabs the first one. Hint: No guarantees, but

make

your i

interface the
lowest one.
Been a recent discussion on this on the Domino

list I

need

to look at...

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

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