Thank you, Chris.
Luke

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Chris Mason
Sent: Wednesday, April 01, 2009 12:58 PM
To: IBM-MAIN@bama.ua.edu
Subject: Re: VTAM - Network Node to Border Node

Luke

You must already have "APPN functionality" since you have a Network Node

and 7 End Nodes.

In addition, you are already participating in border node behaviour. The

adjacent topology subnetworks to which you are connected must already be

performing border node functions. You participle in that, when you
initiate a 
session with an LU in one of the adjacent topology subnetworks, you
search 
each of the adjacent Network Nodes which appear as End Nodes - which
have 
allowed themselves to be searched - to your Network Node. Also, when an
LU 
in one of the adjacent topology subnetworks initiates a session with an
LU in 
your topology subnetwork, the search emerges from one of the Network
Nodes 
adjacent to your Network Node although the search appears to be coming 
from an End Node.

When you change your Network Node also to appear to be a border node,
and 
with BNDYN=FULL, processing in your network won't change at all. The
main 
reason is that your have only one Network Node and so the logic
affecting 
searches hasn't any chance to be any different.

There may be some effects in the adjacent topology subnetworks so you 
should inform all your partners that you are making the change so they
can 
look out for changes - although there shouldn't be any problems.

The more you add Network Nodes to your topology subnetwork and the more 
these Network Nodes also become border nodes, the more you will need to
get 
to grips with the implementation of border node architecture in VTAM.

If you'd like to have some reading to give you greater confidence in
what you 
are already doing and how this is changed when you "come clean" and
admit 
your Network Node really is a border node, you can check out Chapter 6. 
Border Node Support in Subarea to APPN Migration: VTAM and APPN 
Implementation, SG24-4656-01:

http://www.redbooks.ibm.com/abstracts/sg244656.html

Chris Mason

On Wed, 1 Apr 2009 11:47:28 -0500, Rabbe, Luke 
<luke.ra...@countryfinancial.com> wrote:

>We currently have a VTAM network that includes 1 network node and 7 end
>nodes that use the same NETID.  We also have a few connections between
>the network node and outside networks (different NETIDs). 
>
> 
>
>The network node is not currently a border node.  I want to make the
>network node a border node.  
>
> 
>
>If I code the following, will the network node continue to function the
>same?
>
> 
>
>BN=YES
>
>BNDYN=FULL
>
> 
>
>I want to add the APPN functionality but not mess with the way the
>current configuration works.
>
> 
>
>Are there any other things I should be on the lookout for when changing
>to a border node?
>
> 
>
>Thank you,
>
>Luke Rabbe

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