User`s guide

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backup hang-up timer thus saving ISDN call charges. When LAPB is being used on a
synchronous port, this parameter should normally be set to 0.
SSP (WAN) Parameters
Configuration – Network > Legacy protocol> SNA over IP> SNAIP 0> SSP (WAN)
Parameters
Virtual MAC Address
Virtual MAC address. The host uses MAC addresses and SAP values as the addressing values
to discriminate between circuits (in much the same way as an IP address & TCP port define
an addressing point for a TCP socket). This is the MAC address that is reported as part of
the DLSw protocol.
Virtual MAC Address of Peer
The Virtual MAC address of the peer.
IP address of the Peer DLSw unit
The IP address of the peer DLSw unit.
Listen on Port
The read IP port. The TCP socket SNAIP listens on.
Use Port x if this unit starts the DLSw protocol
The write IP port. This TCP socket will be opened by the unit if it needs to start the DLSw
protocol.
Use interface for source IP address
Setting this parameter to a “PPP” or “ETH” instance will cause the source address used by
this SNAIP instance to match that of the Ethernet or PPP interface specified.
Close TCP connection if it is idle for x secs
This specifies the maximum period of inactivity (in seconds) that may occur before an open
TCP/ IP socket is closed. The default value is 300 seconds (5 minutes) and should not
normally require altering.
DLSw Ver
This parameter controls the DLSw version to be used. Set to 0 (default) for version 1, set to
2 for version 2.
DLSw Role
When this parameter is set to “Active”, and the unit is in SNA mode, then this DLSw switch
will actively connect to the remote DLSw switch.
DLSw Window
This parameter is used to set the DLSw window size. The value range is from 10 to 100 with
the default being 20.
UDP Capable
This controls the UDP transmission of DLSw SSP packets. Reception is always enabled for
version 2 support. If set to “OFF”, the state transitions occur just like DLSw version 1 but
the Digi will indicate it is version 2 capable.
Use 1 socket
When this parameter is set to “On” then only one socket is used for both read and write
data. This is useful if the unit is behind a NAT box and incoming connections are not
possible. This parameter can also be set to “Compatible”, in which mode both sockets are
open to start with and then after a negotiation one of the sockets is dropped.