Configuring Domain Name Files

Create or Modify the Resolver File

Create or Modify the Resolver File

The resolver file (RESLVCNF.NET.SYS) is an initialization file for the domain name resolver. It contains information needed by the network to determine how to resolve a domain name to an IP address. This file is read by the resolver routines the first time they are invoked by a process.

To create the resolver file, perform the following steps:

 

Step 1. Copy the sample file, RSLVSAMP.NET.SYS, to RESLVCNF.NET.SYS.

 

Step 2. Modify RESLVCNF.NET.SYS using any ASCII editor so that it contains

 

information about the name servers, domain, and search order for your

 

network. The keywords included in the file are described under “Fields.”

 

To modify an already existing RESLVCNF.NET.SYS file, simply use your

 

editor to update and save the existing file.

Fields

Each entry in the resolver file consists of a keyword followed by a value

 

separated by white space. The keyword and its associated value must

 

appear on a single line and the keyword must start the line. Figure 12-1

 

shows an example of a resolver file. Comment lines start with a pound

 

sign (#).

 

 

domain

Enter the local domain name. Most queries for names

 

 

within this domain can use short names relative to the

 

 

local domain name. If the host name does not contain a

 

 

domain part, the root domain is assumed. If more than

 

 

one instance of the domain keyword is present, the last

 

 

instance will override.

 

 

The domain name is composed of labels, with each label

 

 

separated by a period. Each label must start with a

 

 

letter or digit, and have as interior characters only

 

 

letters, digits, hyphens (-), or underbars (_). A domain

 

 

name may have any number of labels, but its total

 

 

length, including periods, is limited to 255 characters.

 

 

label[.label][...]

 

 

Domain names are not case sensitive.

 

search

The search entry is optional and indicates the order in

 

 

which domains should be searched for host name

 

 

lookup. You should add a search entry if users on this

system commonly try to connect to nodes in other domains. The search list is limited to six domains with a total of 256 characters. If more than one instance of the search keyword is present, the last instance will override.

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Chapter 12

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HP E3000 MPE/IX, E3000/IX manual Create or Modify the Resolver File
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E3000 MPE/IX, E3000/IX specifications

The HP E3000 series, particularly the E3000/IX and E3000 MPE/IX, represents a significant milestone in the evolution of business computing, developed by Hewlett-Packard (HP) during the late 1970s and early 1980s. These systems were designed to provide robust, reliable, and efficient operation for mid-sized businesses, leveraging the power of the MPE (Multi-Programming Executive) operating system.

One of the main features of the HP E3000 series is its multitasking capability. MPE/IX allows for multiple applications to run concurrently, maximizing the utilization of system resources. This is particularly beneficial for organizations that require simultaneous access to various business applications, ensuring enhanced productivity and efficiency.

The HP E3000/IX architecture is built on a powerful 16-bit or 32-bit microprocessor, enabling it to handle substantial workloads. The system architecture is known for its modular design, which allows for easy upgrades and customization. This flexibility is essential for businesses that need to adapt to changing demands without overhauling their entire computing infrastructure.

Another notable technology incorporated into the HP E3000 series is its support for a range of storage solutions. The E3000 systems were compatible with various disk drives, providing organizations with options for data storage that matched their performance and capacity requirements. Additionally, they featured advanced data management capabilities, such as built-in backup and recovery systems, ensuring that critical business information remained secure and accessible.

Beyond hardware capabilities, HP E3000/IX and MPE/IX systems provide extensive programming support. They included tools for developing custom applications, with support for languages such as COBOL, BASIC, and FORTRAN. This versatility made it easier for businesses to tailor their software solutions to their specific needs, enhancing operational effectiveness.

Networking capabilities were also a significant innovation of the E3000 series. The systems offered robust support for various networking protocols, allowing for seamless integration with other computing environments. This facilitated communication and collaboration within an organization, as well as with external partners and clients.

In summary, the HP E3000/IX and E3000 MPE/IX systems were pivotal in delivering reliable computing power to mid-sized enterprises. With their multitasking operating system, modular architecture, advanced data management, and programming support, these systems provided an adaptable and comprehensive solution for evolving business needs. The legacy of the E3000 series is evident in how it paved the way for modern enterprise computing, focusing on flexibility, scalability, and efficiency.
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