Subject: Init Other Cross Domain

From: "Candy Elder ((919)254-4113)" <[email-masked]>
Date: Fri, 20 May 94 10:51:19 EDT

According to the APPN Architecture Reference, for Session Services,
p. 5-43, when the CD Initiate GDS variable is missing.... :

CAUSE: "The local SS, detects that the LOCATE_MESSAGE received from
DS did not include a CD-Initiate after a successful (all-zero sense
data value from DS) distributed search for the DLU ...
For this failure, the appropriate sense data is X'10105002'."

ACTION: SS sends SM an INIT_SIGNAL_NEG_RSP containing the appropriate
sense data.

Regards, Candy
------------------------------- Referenced Note ---------------------------
Date: Fri, 20 May 94 15:10:16 EST
From: [email-masked] (Dave Finnie)
Message-Id: <[email-masked]>
To: [email-masked]
Subject: Init Other Cross Domain

We have recently been testing with VTAM 4.1 and have come
across the case where it sends our node a message on the
CP-CP session that contains a LOCATE, FIND and INIT-OTHER
CROSS-DOMAIN (X'12CD') GDS combination. No CD INIT is present.

I understand from the architecture reference that we should
handle unrecognised GDSs, but how should we respond if
we find the resource in our local database ? SS would not be
able to make any sense out of the INIT-OTHER-CD, as it is
not yet part of the open architecture. Do we just respond
with a LOCATE, FOUND and nothing else ?

Dave

---

From: Dario Calia <[email-masked]>
Date: Fri, 20 May 94 9:51:17 PDT

Hello Candy,

What you describe is the action at the OLU not at the DLU.  I believe
Dave is looking for what he should do at the NN(DLU).  Responding with
a Locate and Found seems reasonable since it will allow the NN(OLU) to
cache the DLU location and reduce future broadcasts.  However, the DLU should
set a sense code and send a CV35 back to the OLU.  I am away from my
office so I can`t look up the sense code.  Someone else will have to do
the honors and bless the contents of the response, too.

Ciao,
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Dario Calia              Cisco Systems, Inc.                             
Software Engineering     1525 O'Brien Drive                   |        |
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