User`s guide

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SNA uses Synchronous Data Link Control (SDLC) which is an unbalanced mode in which
there is one master station and 1 or more secondary stations. Each secondary station owns
a station address and can only respond when this address has just been polled by the
master. A typical scenario is shown in the diagram below:
SNAIP 0
Configuration – Network > Legacy protocol> SNA over IP> SNAIP 0
Description
This parameter allows you to enter a name for this SNAIP instance, to make it easier to
identify.
Send SNAIP traffic over interface
This setting determines which physical interface is to be used for carrying SNAIP data. This
can be set to either “ISDN”, “Serial Port” or “SharedPort”. If “ISDN” is selected then SNAIP
data is carried over the ISDN BRI physical interface. By selecting “Serial Port”, SNAIP data
can be routed to either serial “Port 0” or serial “Port 1“ (operating in synchronous mode). To
configure Port 0 or Port 1 for synchronous operation refer to the Configuration - Network
> Interfaces > Serial > Serial Port x > Sync Port x.
If "Shared Port" is selected, the drop down list next to “Shared Port” specifies the SNAIP
instance that has sync port configured. When sync port sharing is enabled only one SNAIP
instance can currently own the sync port. Other SNAIP instances however can share this
sync port in the event that there is more than one terminal residing on a multi-drop sync
line In this situation with multiple terminals, each terminal station will operate a DLSw
state independently of all other stations.