RFC 3498 (rfc3498) - Page 2 of 43
Definitions of Managed Objects for Synchronous Optical Network (SONET) Linear Automatic Protection Switching (APS) Architectures
Alternative Format: Original Text Document
RFC 3498 SONET LINEAR APS MIB March 2003
1. Introduction
This memo defines a portion of the Management Information Base (MIB)
used for managing SONET linear Automatic Protection Switching (APS)
architectures. Two linear APS architectures are supported, the 1+1
architecture and the 1:n architecture.
2. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC 3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC 2578], STD 58, RFC 2579 [RFC 2579] and STD 58, RFC 2580
[RFC 2580].
3. Overview
These objects are used to control and manage SONET linear APS
architectures. Ring APS groups are not currently supported by this
MIB.
The MIB includes three scalars, containing counts of APS groups and
SONET LTEs, a notification enable object, and six tables.
The apsMapTable contains entries for each SONET LTE interface
available on the system. The table serves two purposes. It can be
used to locate SONET LTE interfaces that are not currently included
in APS groups. It also provides a mapping from InterfaceIndex to
group name and channel number for those SONET LTE interfaces that are
included in APS groups. Entries in apsMapTable cannot be added or
deleted through operations defined in this MIB. However, an
apsMapEntry may be added or deleted through other system mechanisms,
such as hot swap. Also, existing entries cannot be directly modified
and instead, such modifications occur as a result of side-effects of
operations on the apsChanConfigTable.
The apsChanConfigTable supports addition, modification and deletion
of entries representing linear APS channels. Entries are indexed by
a text group name and integer channel number. Each entry contains an
InterfaceIndex value identifying the SONET LTE used for the channel
and the priority of the channel. A side effect of row creation or
Kuhfeld, et al. Standards Track