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Defining the DTC

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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).

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 DTC. 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 on the HP 9000 host using DTC 16RX Manager uses the DTC's IP address and not its LAN address.

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 has four fields of decimal numbers:

xxx.xxx.xxx.xxx

where xxx is a number from 0 to 255.

An IP address has two parts: a network portion and a node portion. The following are examples of three types 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 network portion must be the same for all nodes on the network; the node portion must be unique for all nodes on the network. Examples of IP addresses for two DTCs on the same network follow:

C 192.191.191 008

C 192.191.191 009.

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, you may specify which event logging class is to be enabled. Event 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 a substantial amount of events logged.

Event logging classes do not apply for DTC 16RX access to an HP 3000 in an MPE/iX host-based management environment; any values entered in these fields for the DTC 16RX will be ignored.

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