RFC 1472 (rfc1472) - Page 3 of 13
The Definitions of Managed Objects for the Security Protocols of the Point-to-Point Protocol
Alternative Format: Original Text Document
RFC 1472 PPP/Security MIB June 1993
this or other MIBs.
3.2. Structure of the PPP
This section describes the basic model of PPP used in developing the
PPP MIB. This information should be useful to the implementor in
understanding some of the basic design decisions of the MIB.
The PPP is not one single protocol but a large family of protocols.
Each of these is, in itself, a fairly complex protocol. The PPP
protocols may be divided into three rough categories:
Control Protocols
The Control Protocols are used to control the operation of the
PPP. The Control Protocols include the Link Control Protocol
(LCP), the Password Authentication Protocol (PAP), the Link
Quality Report (LQR), and the Challenge Handshake Authentication
Protocol (CHAP).
Network Protocols
The Network Protocols are used to move the network traffic over
the PPP interface. A Network Protocol encapsulates the datagrams
of a specific higher-layer protocol that is using the PPP as a
data link. Note that within the context of PPP, the term "Network
Protocol" does not imply an OSI Layer-3 protocol; for instance,
there is a Bridging network protocol.
Network Control Protocols (NCPs)
The NCPs are used to control the operation of the Network
Protocols. Generally, each Network Protocol has its own Network
Control Protocol; thus, the IP Network Protocol has its IP Control
Protocol, the Bridging Network Protocol has its Bridging Network
Control Protocol and so on.
This document specifies the objects used in managing one of these
protocols, namely the PPP Authentication Protocols.
3.3. MIB Groups
Objects in this MIB are arranged into several MIB groups. Each group
is organized as a set of related objects.
These groups are the basic unit of conformance: if the semantics of a
group are applicable to an implementation then all objects in the
group must be implemented.
The PPP MIB is organized into several MIB Groups, including, but not
limited to, the following groups:
Kastenholz