User`s manual
AXIS 5570e/AXIS 5670e User’s Manual Section 14: SNA Gateways
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Section 14 SNA Gateways
Gateway
Configuration,
3174 CU mode
Some hints specific to SNA gateways are given below.
• AXIS 5570e/AXIS 5670e appears to a gateway as a Down Stream
Physical Unit (DSPU), with eight LUs, 1 to 8 (LU 1 may not be
available).
• Only gateways that communicate with DSPUs using SNA over
LLC type 2 are supported.
• There are basically two types of gateways that the AXIS
5570e/AXIS 5670e can be attached to: pass-through gateways
and concentrator gateways, as described below.
Pass-through gateway Devices attached downstream to this type of gateway are completely
visible to the host. In other words, each DSPU will have a PU
definition on the host. Examples of pass-through gateways are IBM
3745 Communications Controller, IBM 3174 Establishment
Controller, IBM 3172 LAN Interconnect Controller, etc.
You need to set up at least one PU and LU definition for each AXIS
5570e/AXIS 5670e on the host, as described in the VTAM section.
When attaching an AXIS 5570e/AXIS 5670e to a remote pass-
through gateway, you need to set the mapping of SDLC or sub-
channel address to MAC address in the gateway.