HP 3000 Manuals

General Information Manual

Wide Area Networking 

NS Point-to-Point Link 

The NS Point-to-Point Link provides the network connection to allow an HP
3000 system to communicate with another remote
HP 3000.  It includes a Programmable Serial Interface (PSI) for 900
Series systems as well as transport software that performs the functions
specified in layers one to four of the OSI reference model.  NS
Point-to-Point Link, in conjunction with NS, allows systems to
communicate over wide areas using modem connections.


          Figure 5-8.  Network Services over a WAN 

HP DTC X.25 XL Network Link 

The HP DTC X.25 Network Link lets systems and remote PAD device users
access the HP 3000 900 Series systems using X.25.  Because the link is
integrated with the DTC, communications overhead is offloaded from the HP
3000, thus increasing overall host availability for other functions.
With this hardware and software link, HP 3000s can connect to either
public or private X.25 packet switching networks.  The HP 3000 can access
remote printers and terminals connected to an X.25 PAD.

HP now offers the user two X.25 management solutions, PC-based X.25
management and host-based X.25 management, to choose from to best meet
their X.25 needs.  The user is provided with an easy growth path between
the two solutions, as well as full integration.

PC-based X.25 management is for users with multiple systems on the same
LAN and multiple types of devies (that is, DTCs, switches, and PADs--and
soon bridges and hubs).  For users with this type of environments, the
PC-based X.25 management provides a centralized and thus cost-effective
solution as the cost of the PC workstation is shared among multiple
network management applications.

Host-based X.25 management enables an HP 3000 user to manage an X.25 link
from an XL host instead of a PC. Host-based X.25 management is limited to
single-system use of the X.25 card.  Therefore, host-based X.25 is for
users that have one system on a LAN. For users with this type of
environment, host-based X.25 management provides a single operator with
the capability to configure a system, asynchronous ports, and X.25 links
from the operator's console.  Host-based X.25 management is scheduled for
release on 3.1 (for 9X7 systems only) and for general release in
mid-1992.


          Figure 5-9.  Host-Based X.25/XL 


          Figure 5-10.  HP OpenView PC-Based 

MPE/iX 5.0 Documentation