I'm having a difficulty with routing particular process' VTAM traffic and I
can't figure out how to make VTAM do what I want it to.
My network is 1 network node and several end nodes. The application in this
process resides on an end node. I have 2 Enterprise Extender nodes on the
network node. One EE node is connected to an intermediate network. The other
is directly connected to a business partner's network. I used to use the
intermediate network to reach the business partner's network, but now I only
want traffic to flow through the direct route.
I'm able to accomplish this when the EE connection to the business parter
(EEBP) is active and session initiation is attempted. When EEBP is active, the
traffic flows from my end node, to my network node, through EEBP, and to the
business partner's CP. That's great. However, if EEBP is made inactive, VTAM
routes all new and existing sessions through the intermediate network. I don't
want this to happen - I don't want to use the intermediate network any more.
These are my VTAM defintions that I think are relavant:
Network node:
Adjacent cluster table:
VBUILD TYPE=ADJCLUST
NETWORK NETID=(RMTNET)
RMTCP NEXTCP CPNAME=RMTNET.RMTCP,SNVC=2
NNCP NEXTCP CPNAME=MYNET.NNCP,SNVC=2
ADJSSCP table:
VBUILD TYPE=ADJSSCP
NETWORK NETID=RMTNET,SORDER=ADJSSCP
RMTCP ADJCDRM
End node:
VTAMOPT SORDER=APPNFRST
ADJSSCP table:
VBUILD TYPE=ADJSSCP
NETWORK NETID=RMTNET,SORDER=ADJSSCP
RMTCP ADJCDRM
NNCP ADJCDRM
VBUILD TYPE=ADJSSCP
NETWORK NETID=MYNET
NNCP ADJCDRM
ENCP1 ADJCDRM
ENCP2 ADJCDRM
ENCP3 ADJCDRM
NETWORK
NNCP ADJCDRM
ENCP1 ADJCDRM
ENCP2 ADJCDRM
ENCP3 ADJCDRM
My CDRSCs on the EN are dynamic. I don't think this matters because I tried
this with statically defined CDRSCs and got the same result.
I suspect a clue to the problem lies in the fact that when the application
attempts to start a session, the remote LU is qualified with my network ID as
opposed to the business partner's network ID (MYNET.LU1 vs. RMTNET.LU1). So,
the EN VTAM uses the ADJSSCP table for MYNET instead of RMTNET. In doing so
the APPN network is searched first because of the VTAM startup option. And
because of that the remote CP is found whether the direct EE connection is
active or not. And when the direct EE connection is active, VTAM chooses to
use it. I don't want to change my local network ADJSSCP table or the SORDER
default on the end node.
I hope I've explained myself well enough. Does anyone have any ideas on how to
establish and maintain the route through the direct EE connection?
Luke
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