Digi TransPort WR11 User Manual page 594

Configuring legacy protocols
N400 counter
A standard LAPB retry counter. The default value is 3. Normally it is not necessary to change
this parameter.
RR Timer
A standard LAPB/LAPD Receiver Ready timer. The default value is 10,000ms (10 seconds).
Normally it is not necessary to change this parameter.
T1 timer
A standard LAPB timer. The default value is 1000 milliseconds (1 second). Normally it is not
necessary to change this parameter.
T200 timer
A standard LAPB re-transmit timer. The default value is 1000 milliseconds (1 second). Normally
it is not necessary to change this parameter.
Window Size
The X.25 window size. The value range is from 1 to 7 with the default being 7.
Disconnect link if there has been no activity forx seconds
The length of time, in seconds, before the link is disconnected if there has been no activity. If
this parameter is 0 or not specified, the inactivity timer is disabled. When the router uses a
LAPB instance over ISDN, it is useful to set this to a short period of time, for example, 120
seconds. You can use this timer as a backup hang-up timer, thereby saving ISDN call charges.
When using LAPB on a synchronous port, you should normally set this parameter to 0.
4. Configure 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 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 router if it needs to start the DLSw
protocol.
Digi TransPort® Routers User Guide
Configure Systems Network Architecture over IP (SNAIP)
594