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The following parameters are required to define each DTC used for connection
between the HP 3000 and its asynchronous devices (terminals and printers). You
can use the DTC Configuration worksheets as shown later in this chapter to
record the values selected for each DTC.
- DTC Name
- A name for the DTC, up to eight alphanumeric characters, beginning with
a letter. Each DTC configured on the system must have a unique name.
- DTC LAN Station Address
- The local station address of the DT C. The HP 2345B (DTC 48) station
address is printed inside the front cover. The HP 2340A (DTC 16) station
address is printed on the label located on the upper right-hand corner
of the back panel of the DTC. The HP J2070A (DTC 72MX) and
J2062A/J2063A/J2064A (DTC 16iX/16MX/16RX) station address is printed on
the label located at the lower center of the back panel of the DTC.
A typical LAN address looks like: 08-00-09-1A-11-11.
For DTC 16RX access to an HP 3000 in an MPE/iX host-based management
environment, use the value 00-00-00-00-00-00 as the DTC 16RX
LAN address. Configuration of the DTC 16RX is done on the HP 9000 host
using DTC 16RX Manager.
- DTC Node Name
A fully qualified node name of the DTC, in the form
nodename.domain.organization, where each field can contain 16 or
fewer characters (alphanumeric, underscores, or hyphens). The first
character of each field must be alphabetic.
Assign meaningful node names. For example, ACCTS.IXNET.ACCTG
and PAY.IXNET.ACCTG are meaningful names for two nodes on the
same Local Area Network (LAN) within the accounting department. One node
(ACCTS.IXNET.ACCTG) is used by the accounts staff. The other
node (PAY.IXNET.ACCTG) is used by the payables staff. The
domain field is the same because the nodes belong to the
same network. The organization field is the same because
the nodes belong to the same internetwork.
- DTC IP Address (optional)
- The internet protocol (IP) address of the DTC. The IP address is
optional. It is used if your HP 3000 is configured as part of a network
and you want the DTC to be able to respond to PING/iX requests.
An IP address is made up of a network portion and a node portion. The
address is formed as four fields of decimal numbers where each number is
a value ranging from 000 to 255.
The following shows examples of three classes of IP addresses:
Class A: nnn.xxx.xxx.xxx
Class B: nnn.nnn.xxx.xxx
Class C: nnn.nnn.nnn.xxx
where nnn represents the network portion and xxx
represents the node portion of the address. The class of the IP address
is determined by the value of the left most group of nnn and
has the following ranges:
Class A: 001-126
Class B: 128-191
Class C: 192-254
Network and node portions of all zeroes or 255 are not allowed for DTC
addresses. These are special values. All devices configured with the
same network portion are considered to be on the same network. The node
portion must be unique for all nodes on a network.
You can obtain a Class B or Class C IP address from:
Government Systems, Inc.
Attn: Network Information Center
7990 Boeing Ct.
Vienna, VA 22183
(800) 364-3642 or FAX: (703) 821-6161
For DTC 16RX access to an HP 3000 in an MPE/iX host-based management
environment, the IP address of the DTC 16RX is configured using the DTC
16RX Manager on the HP 9000 host and not on the HP 3000. Any value
entered for the DTC 16RX in NMMGR will be ignored.
- DTC Cards (or DTC Boards)
- The number and types of connector cards in the DTC. (The cards are also
referred to as boards.) DTC 16 can have up to 2 asynchronous
cards and 1 DTC/X.25
Network Access card, DTC 48 up to 6 cards, and DTC 72MX up to 4 cards.
DTC 16iX/16MX/16RX has its two port connectors built directly onto its
backplane for support of up to 16 asynchronous devices. It does not have
removable cards; you do not specify the number or type of cards for a
DTC 16iX/16MX/16RX.
The valid card types are:
| For DTC 16 and DTC 48: |
| D | for direct connect cards (up to 8 ports per card), |
| M | for modem connect cards (up to 6 ports per card), |
| X | for DTC/X.25 Network Access cards (for connection). |
| For DTC 72 MX: |
| L | for the LAN card, pre-installed in slot 0 |
| A |
for asynchronous processor boards (up to 24 ports per
card for direct and modem connections) |
| X |
for DTC/X.25 Network Access cards (for X.25 connection). |
- DTC Event Logging
-
For each DTC, logging class 1 logs catastrophic events and will always
be enabled. Class 2 logs critical events; class 3 logs non-critical
events; classes 4 and 5 log informative events and class 6 provides
statistical information. It is recommended that you only enable classes
4 through 6 when you encounter problems, because they will generate and
log a substantial number of events. The log files could use a
significant amount of disk space.
Event logging classes do not apply for access to an HP 3000 in an MPE/iX
host-based management environment using a DTC 16RX; any values entered
in these fields for the DTC 16RX will be ignored.
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