SNA Link/iX Node Managers Guide (30291-90507)

Chapter 2 63

SNA Node and Link Conﬁguration

Conﬁguring the SNA Node and Link

15 times at T1 intervals.

Range: (1–15)

Physical interface

Required. The Physical Interface ﬁeld displays the

cable type that is currently connected to the PSI card,

This data is to be conﬁgured through NMMGR. The

possible values are:

0 = RS-232

1 = V.35

Transmit window size

Required. The Transmit Window size (K ﬁeld) is the

conﬁgured number of unacknowledged frames that are

allowed in the network at any given time. For example,

if this value is set to seven (7) for a node, and that node

transmits seven (7) packet frames onto the network, it

cannot transmit another frame until one or more of the

transmitted frames are acknowledged.

Range: 1–7

Connect timeout

Required. The Connect Timeout is the current logical

link level 2 connection timeout. The Connect Timeout

parameter sets the amount of time a node will wait for

a logical connection to a remote node to be established.

If this timer expires, the node aborts the connection

attempt. The abort process can take several additional

seconds.

Range: 5–900 seconds

Clock source

Required. The Clock source ﬁeld deﬁnes the clocking

mode. The possible types of clocking source are:

0 = internal

1 = external)

Adapter timeout

Required. The Adapter Timeout is the value speciﬁed

for the Adapter timer. This timer, also called a

heartbeat timer, is used to monitor whether the system

and/or the ACC card are functioning. The ACC card,

and the system, transmit a signal, called a heartbeat

signal, to each other on a speciﬁed schedule. If for

example, the heartbeat does not arrive at the ACC card