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DI3270 802.2 LLC is a full-featured micro-to-mainframe connectivity product able to operate standalone or as a gateway between an IBM host and a micro-based local area network communicating via IEEE 802.2 protocol over Ethernet or token ring topologies. DI3270 802.2 LLC supports from 8 to 253 sessions (or user workstations) in a LAN gateway configuration. Data transfer speeds between DI3270 802.2 and the IBM host range from 4 to 16Mbps depending on the capabilities of the Token Ring or Ethernet LAN.

Standalone DSPU
In a standalone or single workstation configuration, DI3270 functions as a down stream physical unit, communicating with a 3174 controller or a 3725/3745 FEP via 802.2 logical link control protocol. Each workstation running DI3270 802.2 as a DSPU is visible to the controller or the FEP as a physical unit.

Gateway DSPU/DSLU
In a gateway configuration, the gateway machine running DI3270 802.2 is a down stream physical unit with down stream logical units attached (DSLU). As a DSPU, the gateway is visible to the controller or the FEP; the workstations, attached as logical units, are not.

TN3270 Access
In a gateway configuration, the DI3270 MultiProtocol Comm Server can support access from any TN3270 or TN3270E terminal emulator, regardless of host connect protocol.   This means that any TN3270-compatible emulator can be used to access the mainframe via the DI3270 Comm Server, including  Attachmate Extra!, Wall Data Rumba, WRQ Reflection, and Zephyr Development Passport, to name a few. 

ORDERING INFORMATION

DI3270 Software         Model Code

Standalone DOS           MPDOSWS-001

Gateway
1 - 8 sessions                 DI3270-008
1 - 16 sessions               DI3270-016
1 - 32 sessions               DI3270-032
1 - 64 sessions               DI3270-064
1 - 128 sessions             DI3270-128
1 - 253 sessions             DI3270-253