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The current supported levels of VTAM on VSE are V3R4 and V4R2. VSE VTAM
V4R2 is available in three different functional level packages:
•
Client/Server
•
MultiDomain
•
InterEnterprise
Packages are priced according to the amount of function provided and are
password enabled via the VTAM start procedure.
The eNetwork Communications Server for OS/390 is only available in a single
flavor, which is the functional equivalent of the high end VSE/VTAM package
(InterEnterprise). The four main differences between VSE/VTAM and OS/390
VTAM are as follows:
1
VSE/VTAM supports Integrated Communications Adapters (ICAs) on 9221,
937X and 43XX processors.
These adapters are not supported by OS/390 VTAM, and alternate methods
of connecting your network to a channel must be found. The various ICAs
and possible alternatives follow:
•
Multi-Protocol Communication Subsystem (6251 - 6254)
IBM eNetwork Communications Server for OS/2 (prod #4301114) or
Windows NT (prod #4231747) with a Wide Area Connector (WAC)
card or Multi-Protocol Adapter (MPA) card can provide support for
SDLC communication lines.
The 3172 Interconnect Controller, in addition to LAN connectivity can
provide support for up to 32 SDLC communication lines.
The 2210 and/or 2216 multi-protocol routers can be used to support
multiple line protocols including SDLC. These routers can be
attached to the host via a LAN gateway (such as the OSA-2
adapter). In addition, the 2216 can be channel attached much like
the 3172.
A 37XX controller with NCP can provide support for SDLC line
protocols for installations required to support larger numbers of
remote devices.
•
Asynchronous Communication Subsystem (6241 - 6244)
A 37XX controller with NCP/PEP can provide connectivity for
asynchronous Start/Stop (TTC2) devices.
•
ASCII Subsystem (6245 - 6248)
Although MVS/VTAM supports this adapter, if the migration includes
a processor upgrade, a replacement for this adapter must be found.
Options include the 3174 with an Asynchronous Emulation Adapter
(AEA) providing support for ASCII devices in 3270 emulation mode.
IBM eNetwork Communications Server for OS/2 (prod #4301114) or
Windows NT (prod #4231747) with a Multi-Protocol Adapter (MPA)
card can provide support for ASCII devices in 3270 emulation mode.
•
Token-Ring Adapter (6139/6140)
•
Ethernet Adapter (6135)
188 VSE to OS/390 Migration Workbook