IBM SC30-3865-04 - Manual (Page 53)

A mixture of Pool and LU types(Workstation or Printer) can be added to a particular
map. The resource selected will be based on the type of connection request. The
order in which the resources are defined in the map will be the order in which it is
chosen for a particular connection request.
How LUs are Chosen For Client Connections
When IP Address to LU Name Mapping is enabled, client IP Address to LU Name
Mappings take priority over everything else. The client’s IP address is used to
determine which LU/Pool will be used. If the IP Address Map definition specifies
as the pool name, the destination port number will be used to determine
the SNA resource to use based on the table below. The table will also be used
when Mapping is enabled, but no Map definitions exist.
If the client specifies an LU/Pool name on the connect request, that name must
match a resource in a Map definition. If the name specified by the client is an LU
name that is contained within a Pool, that LU name MUST be in the Map definition
for the connection to be accepted. It is not sufficient for just an LU’s Pool name to
be in the Map definition.
When IP Address to LU Name Mapping is not enabled, the following table describes
how SNA resources are assigned.
Client Connection Port Definition Result
Explicit LU or Pool name specified Pool name defined Explicit name is used as
long as the incoming
name matches the defined
name.
Explicit LU or Pool name specified defined as Pool
name
Explicit name is used as
long as the incoming
name has been defined
Explicit LU or Pool name specified No Pool name defined on
port
Explicit name is used as
long as the incoming
name has been defined
No resource name specified Pool name defined Name defined on port is
used
No resource name specified specified as the
Pool name Global default Pool is
used
No resource name specified No resource name
specified Connection request
rejected
TN3270E Server and DDDLU
If prompted by VTAM, the TN3270E Server function will use DDDLU to create its
local LUs in VTAM. Instead of sending all of the Reply PSID’s when the ACTPU is
received, the server will wait until the LU actually needs to be defined. The LU
definition will occur when a TN3270 client connects in and needs an LU that has
not been defined to VTAM.
Support for Subarea SNA Connections from the TN3270E Server to the
Host
Connecting to a host for establishing an dependent LU-LU session can be
accomplished using a traditional subarea connection or using an APPN connection
APPN
Chapter 1. APPN 23
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|||
|
|
|
||
| |
|
|
||
| |
|
|
|||
|
||
| |
|
||
| |
||
|
|
|
|
|
|
|
|
|