Visara CNA-8000 Planning Guide - Manual (Page 24)

Chapter 2. Support of PU 2 Platforms
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VTAM Switched Major Node Definitions
If you already have Switched Major Node definitions in use for your PU 2 platforms
coming through the 3745’s Token Ring adapters, then you should not have to make any
changes to those definitions at all. You will need to define one XCA Major Node
definition for each network adapter that will be used to provide access for the
downstream PUs.
If you need to create new Switched Major Node definitions to define new platforms, you
will need to define IDBLK and IDNUM values in the VTAM PU definition to match the
XID value that will be configured on those platforms. Together these two parameters
define an 8 character hex sequence. The IDBLK typically identifies the type of device
(for example a 3174 type controller always uses ‘017’ for the first 3 characters of the
XID). The IDNUM defines a unique 5 digit hex number for the remaining 5 characters
(sometimes referred to as the PUID). Just make sure that the VTAM definition matches
the value configured in the remote node.
Operations of the CNA-8000 XCA interface during the connection process involves the
PU 2.0 platform sending its XID through the CNA-8000’s XCA interface to VTAM for
processing (matching the XID to a SWNET PU definition). If a match is found the
connection is established, if not the remote platform will be disconnected.
Example Token Ring XCA Definition:
TRCXCA VBUILD TYPE=XCA
PORTC66
PORT MEDIUM=RING, (Token Ring)
CUADDR=C66,
SAPADDR=4,
ADAPNO=
2 (FEP-4600 3 rd Token Ring Adp)
GRPC66 GROUP ANSWER=ON,
CALL=IN,
AUTOGEN=(6,L,P), (Number of Concurrent PUs)
ISTATUS=ACTIVE
Example Ethernet XCA Definition:
ETHXCA VBUILD TYPE=XCA
PORTC67 PORT
MEDIUM=CSMACD, (Ethernet)
CUADDR=C67,
SAPADDR=4,
ADAPNO=
0 (CNA-8000 1 st Ethernet Adp)
GRPC67 GROUP ANSWER=ON,
CALL=IN,
AUTOGEN=(6,L,P), (Number of Concurrent PUs)
ISTATUS=ACTIVE