RFC 3813 (rfc3813) - Page 3 of 60

Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) Management Information Base (MIB)

RFC 3813                      MPLS LSR MIB                     June 2004


2.  Terminology

   This document uses terminology from the document describing the MPLS
   architecture [RFC 3031].  A label switched path (LSP) is modeled as a
   connection consisting of one or more incoming segments (in-segments)
   and/or one or more outgoing segments (out-segments) at a LSR.  The
   association or interconnection of the in-segments and out-segments is
   accomplished by using a cross-connect.  We use the terminology
   "connection" and "LSP" interchangeably where the meaning is clear
   from the context.

      in-segment        This is analogous to an MPLS label.
      out-segment       This is analogous to an MPLS label.
      cross-connect     This describes the conceptual connection
                        between a set of in-segments and out-segments.
                        Note that either set may be 0; that is, a
                        cross-connect may connect only out-segments
                        together with no in-segments in the case
                        where an LSP is originating on an LSR.

3.  The SNMP 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].

4.  Outline

   Configuring LSPs through an LSR involves the following steps:

   -  Enabling MPLS on MPLS capable interfaces.

   -  Configuring in-segments and out-segments.

   -  Setting up the cross-connect table to associate segments and/or to
      indicate connection origination and termination.

   -  Optionally specifying label stack actions.




Srinivasan, et al.          Standards Track