OSI/TS Configuration and Management Manual

Configuring the OSI/TS Subsystem
OSI/TS Configuration and Management Manual—424831-001
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Miscellaneous Attributes
WINDOWTIMEOUT Attribute
The WINDOWTIMEOUT attribute defines the amount of time TSP waits before
retransmitting up-to-date window information. This establishes a limit on the maximum
interval between window updates. You should set this value high enough to ensure that
update information is transmitted as often as is useful, yet low enough to ensure that it is
lower than the INACTIVETIMEOUT at the other end of the connection.
MAXREMIT Attribute
The MAXREXMIT attribute defines the maximum number of times unacknowledged
TPDUs are retransmitted. Set this value in conjunction with the INACTIVETIMEOUT
value. If you set MAXREMIT too high, excessive unnecessary traffic may be generated
on the line if the line is bad.
Miscellaneous Attributes
There are a number of attributes that do not easily fall into the other categories. They
include some attributes associated with X25AM, ES-IS routing exchange protocol, and
OSI IP. Many of these are timeout values that may need to be varied according to the
time of day, traffic load, or other factors. These attributes are as follows:
•
X25DISCONNECTDELAY (Layer 3)
•
L3IMMEDIATERR (Layer 3, X25AM)
•
ESISESCONFTIME (Layer 3)
•
ESISQUERYRETRY (Layer 3)
•
ESISQUERYTIME (Layer 3)
•
IPLIFETIME (Layer 3)
These attributes are discussed in the following subsections.
X25DISCONNECT-DELAY Attribute
The X25DISCONNECTDELAY attribute defines the amount of time that the TSP
process waits before issuing a network disconnect request on an idle X.25 network
connection. If you set the value too high, it can tie up a network connection
unnecessarily. However, you must set the value high enough to ensure that the
connection isn't unnecessarily disconnected (for example, when the connection is slow
rather than idle).
L3IMMEDIATERR Attribute
The L3IMMEDIATERR attribute (an X25AM SYSGEN attribute) specifies that an RR
(receive ready) packet is transmitted each time a data packet is received. This parameter
can add extra line and processing overhead.