Specifications

Introduction Page 7
DNA Routing Layer Functional Specification, Version 2.0.0, Order
-
NO. AA-X435A-TK
DNA Session Control Functional Specification, Version 1.0.0, Order
-
NO. AA-K182A-TK
The Ethernet
- A Local Area Network - Data Link Layer and Physical
- - -
-- -
Layer Specifications, Version 2.0, (Digital, Intel, and
Xerox), Order No.
AA-K759B-TK
The DECnet DIGITAL Network Architecture (Phase IV) General Description
-
(Order No. AA-N149A-TC) provides an overview of the network
architecture and an introduction to each of the DNA functional
specifications.
1.1 Functional Description
Low level maintenance functions are divided into three categories.
Operation within any category depends on the operability of at least
part of the preceding
category. The categories are:
1. Communications test
2. System console
3. System load/dump
Each of these functions can be viewed either from the active or
passive end. The active end is the one that is driving the
maintenance function and the passive end is the one that is
responding.
Communications test determines
if the data link communications path is
operative.
System console provides low level access to a system for the functions
of:
. Identify processor
. Read data link counters
. Boot system
. Console carrier
The console carrier is a general purpose console input/output channel.
It provides a common communication mechanism to allow remote access
regardless of console command specifics.