HP X.25 for OpenVMS Alpha and I64 Systems, V2.0
HP X.25 for OpenVMS Alpha and I64 Systems, V2.0 SPD 47.37.16
INSTALLATION
HP recommends that a customer’s first purchase of
this software product include HP Installation Services.
These services provide for installation of the software
product by an experienced HP Software Specialist. Only
customers experienced with HP’s X.25 products should
attempt installation.
Customer Responsibilities
In some cases, the X.25 network supplier may impose
restrictions, limitations, or requirements on the proposed
HP network configuration. The customer must ensure
these are understood and adhered to for each network.
Before installation of the software, the customer should:
• Install all requisite software and hardware, including
terminals.
• Obtain, install, and demonstrate as operational any
modems and other equipment and facilities neces-
sary to interface to HP’s communication equipment.
• Demonstrate equivalence of operation for modems
other than Bell 208A, 208B, 209, 212A synchronous
modems, or, in Europe, employ only PTT approved
modems.
• Subscribe to the Open User Group and to at least two
SVCs to complete the product’s installation check-
out (this test loops information from the X.25 for
OpenVMS system to the PSDN and back to the
X.25 for OpenVMS system). Systems in Closed User
Groups only, or where the PSDN does not support
calls to the originating DTE address, require specially
negotiated arrangements for HP to install the prod-
uct.
• Make available for a reasonable period of time, as
mutually agreed by HP and the customer, all hard-
ware, communication facilities and terminals that are
to be used during a HP supervised installation.
HARDWARE REQUIREMENTS
Please reference the OpenVMS Alpha and I64 Software
Product Description (SPD 41.87.XX) for supported hard-
ware.
This section lists the Alpha processors that are sup-
ported by OpenVMS Alpha Version 8.2.
DEC 4000 Model 600/700 series
1
DEC 7000 Model 600
1
DEC 10000 Model 600
1
DEC 3000 Model 300/300L/300LX/300X
2
1
No synchronous communication option available. Connection available only via
LLC2.
2
Only standard workstation configurations support use of the SCC.
System Memory Required for Alpha
In addition to the memory requirements of OpenVMS
Alpha and user applications, the minimum memory re-
quirements of HP X.25 for OpenVMS Alpha Systems
are:
• 2.5 Mbytes for software and data structures
• 40 Kbytes for each active virtual circuit in a Client
configuration
• 10 Kbytes for each active virtual circuit in a directly
connected configuration
• 7 Kbytes for each DTE configured to use XOT
System Memory Required for I64
In addition to the memory requirements of OpenVMS
I64 and user applications, the minimum memory require-
ments of HP X.25 for OpenVMS I64 Systems are:
• 6.25 Mbytes for software and data structures
• 10 Kbytes for each active virtual circuit in a directly
connected configuration
• 120 Kbytes for each DTE configured to use XOT
These figures represent an upper bound only and
should be used as a guide to sizing a system to provide
adequate X.25 performance. The product will require
less memory than quoted. However, an underconfig-
ured system will display reduced performance, not only
for X.25 communications but also for other processes.
Communication Devices Required for Alpha
HP X.25 for OpenVMS Alpha Systems requires one or
more synchronous controller cards when directly con-
nected to one of the following:
• a PSDN via the X.25 protocol;
• another system using DECnet-Plus over X.25; or
• another HP system using DECnet-Plus over DEC–
HDLC.
The devices available on the supported processors are
listed in Table 4. For additional information on the con-
figuration and performance of these devices see the
CONFIGURATION GUIDELINES section.
For operation using the ISO 8802–2 protocol (LLC2) the
product requires a Local Area Network (LAN) device.
The product supports HP’s ISO 8802–3 (CSMA/CD) and
ISO 9341 (FDDI) devices for use with the LLC2 protocol.
For operation over LLC2 to an X.25 relay node, the sup-
ported relay nodes are
• DEC Network Integration Server (DECNIS) 500/600
(SPD 36.05.xx)
5