Configuring Systems for Terminals, Printers, and Other Serial Devices (32022-90057)

Additional DTC Configuration
Tuning Your DTC
Chapter 8
146
5. After you have selected the desired timer values, press the
[Save Data]
key.
6. Press the
[Prior Screen]
key to return to the DTC Configuration screen, or press
[Validate DTS/LINK]
to validate your configuration if you have completed configuration
for your DTCs.
NOTE If you changed your network configuration, validate the configuration and
cross-validate with SYSGEN before exiting NMMGR. Refer to Chapter 5,
“Configuring Serial Devices (for Host-Based Management),” for information on these
steps.
For host-based management, after you invoke dynamic configuration, both host and DTC
values will take effect once you logoff any sessions or stop and restart the spooler
associated with changed devices and download the DTC. For PC-based management,
only the host values will take effect because the DTCs are managed by the OpenView
DTC Manager on the PC. You must use the OpenView DTC Manager to configure and
download the DTC timer values. In this case, you must ensure consistency of timer
selections between the host and the DTC during configuration in NMMGR and
OpenView DTC Manager.
Fields AFCP Timer Set 1 Normal timer mode. This selection is appropriate for most users
operating in a normal LAN environment.
AFCP Timer Set 2 Short retransmission timer mode. This is appropriate in a LAN
environment where there is a high number (greater than 1%) of
packets lost on the LAN. The values are adapted to provide shorter
retransmission values and higher number of retries.
AFCP Timer Set 3 Long retransmission timer mode. This is appropriate in a LAN
environment where the LAN is very reliable. The values are adapted to
reduce LAN traffic and host driver overhead.
AFCP Timer Set 4 Variable retransmission timer mode. This is appropriate in
exceptional cases where there is a very high percentage of lost packets
on the LAN. The values are adapted to prevent saturation of the LAN.
AFCP Timer Set 5 MPE XL release 1.2 timer mode. This is appropriate for use with HP
e3000 MPE XL FOS release 1.2.
AFCP Timer Set 6 MPE XL release 2.1 timer mode. This is appropriate for use with HP
e3000 MPE XL FOS release 2.1.
TCP Timer Set 1 Normal timer mode. For local transaction processing applications and
Telnet connections on local LAN.
TCP Timer Set 2 Bridge timer mode. Same mode as Set 1 but with bridges. Suitable for
LANs with moderate delays.
TCP Timer Set 3 Router/X.25 timer mode. Same mode as Set 1 but with routers or
X.25. Suitable for LANs with longer delays.
TCP Timer Set 4 High data loss timer mode. Suitable for networks with high data
losses.
TCP Timer Set5 Heavy traffic timer mode. Suitable for extended switching
applications on local LAN or with bridges where there is heavy traffic.
Management Timer Set 1 Normal traffic mode. This is appropriate in a LAN
environment with normal traffic