638 lines
26 KiB
Plaintext
638 lines
26 KiB
Plaintext
-- *****************************************************************
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-- MPLS-TC-STD-MIB.my: extracted from RFC 3811
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-- *****************************************************************
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MPLS-TC-STD-MIB DEFINITIONS ::= BEGIN
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IMPORTS
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MODULE-IDENTITY,
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Unsigned32, Integer32,
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transmission FROM SNMPv2-SMI -- [RFC2578]
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TEXTUAL-CONVENTION
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FROM SNMPv2-TC; -- [RFC2579]
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mplsTCStdMIB MODULE-IDENTITY
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LAST-UPDATED "200406030000Z" -- June 3, 2004
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ORGANIZATION
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"IETF Multiprotocol Label Switching (MPLS) Working
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Group."
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CONTACT-INFO
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" Thomas D. Nadeau
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Cisco Systems, Inc.
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tnadeau@cisco.com
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Joan Cucchiara
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Marconi Communications, Inc.
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jcucchiara@mindspring.com
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Cheenu Srinivasan
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Bloomberg L.P.
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cheenu@bloomberg.net
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Arun Viswanathan
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Force10 Networks, Inc.
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arunv@force10networks.com
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Hans Sjostrand
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ipUnplugged
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hans@ipunplugged.com
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Kireeti Kompella
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Juniper Networks
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kireeti@juniper.net
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Email comments to the MPLS WG Mailing List at
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mpls@uu.net."
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DESCRIPTION
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"Copyright (C) The Internet Society (2004). The
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initial version of this MIB module was published
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in RFC 3811. For full legal notices see the RFC
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itself or see:
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http://www.ietf.org/copyrights/ianamib.html
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This MIB module defines TEXTUAL-CONVENTIONs
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for concepts used in Multiprotocol Label
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Switching (MPLS) networks."
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REVISION "200406030000Z" -- June 3, 2004
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DESCRIPTION
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"Initial version published as part of RFC 3811."
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::= { mplsStdMIB 1 }
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mplsStdMIB OBJECT IDENTIFIER
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::= { transmission 166 }
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MplsAtmVcIdentifier ::= TEXTUAL-CONVENTION
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DISPLAY-HINT "d"
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STATUS current
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DESCRIPTION
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"A Label Switching Router (LSR) that
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creates LDP sessions on ATM interfaces
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uses the VCI or VPI/VCI field to hold the
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LDP Label.
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VCI values MUST NOT be in the 0-31 range.
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The values 0 to 31 are reserved for other uses
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by the ITU and ATM Forum. The value
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of 32 can only be used for the Control VC,
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although values greater than 32 could be
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configured for the Control VC.
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If a value from 0 to 31 is used for a VCI
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the management entity controlling the LDP
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subsystem should reject this with an
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inconsistentValue error. Also, if
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the value of 32 is used for a VC which is
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NOT the Control VC, this should
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result in an inconsistentValue error."
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REFERENCE
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"MPLS using LDP and ATM VC Switching, RFC3035."
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SYNTAX Integer32 (32..65535)
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MplsBitRate ::= TEXTUAL-CONVENTION
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DISPLAY-HINT "d"
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STATUS current
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DESCRIPTION
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"If the value of this object is greater than zero,
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then this represents the bandwidth of this MPLS
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interface (or Label Switched Path) in units of
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'1,000 bits per second'.
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The value, when greater than zero, represents the
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bandwidth of this MPLS interface (rounded to the
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nearest 1,000) in units of 1,000 bits per second.
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If the bandwidth of the MPLS interface is between
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((n * 1000) - 500) and ((n * 1000) + 499), the value
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of this object is n, such that n > 0.
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If the value of this object is 0 (zero), this
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means that the traffic over this MPLS interface is
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considered to be best effort."
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SYNTAX Unsigned32 (0|1..4294967295)
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MplsBurstSize ::= TEXTUAL-CONVENTION
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DISPLAY-HINT "d"
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STATUS current
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DESCRIPTION
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"The number of octets of MPLS data that the stream
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may send back-to-back without concern for policing.
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The value of zero indicates that an implementation
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does not support Burst Size."
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SYNTAX Unsigned32 (0..4294967295)
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MplsExtendedTunnelId ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"A unique identifier for an MPLS Tunnel. This may
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represent an IPv4 address of the ingress or egress
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LSR for the tunnel. This value is derived from the
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Extended Tunnel Id in RSVP or the Ingress Router ID
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for CR-LDP."
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REFERENCE
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"RSVP-TE: Extensions to RSVP for LSP Tunnels,
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[RFC3209].
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Constraint-Based LSP Setup using LDP, [RFC3212]."
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SYNTAX Unsigned32(0..4294967295)
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MplsLabel ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"This value represents an MPLS label as defined in
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[RFC3031], [RFC3032], [RFC3034], [RFC3035] and
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[RFC3471].
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The label contents are specific to the label being
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represented, such as:
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* The label carried in an MPLS shim header
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(for LDP this is the Generic Label) is a 20-bit
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number represented by 4 octets. Bits 0-19 contain
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a label or a reserved label value. Bits 20-31
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MUST be zero.
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The following is quoted directly from [RFC3032].
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There are several reserved label values:
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i. A value of 0 represents the
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'IPv4 Explicit NULL Label'. This label
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value is only legal at the bottom of the
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label stack. It indicates that the label
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stack must be popped, and the forwarding
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of the packet must then be based on the
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IPv4 header.
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ii. A value of 1 represents the
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'Router Alert Label'. This label value is
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legal anywhere in the label stack except at
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the bottom. When a received packet
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contains this label value at the top of
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the label stack, it is delivered to a
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local software module for processing.
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The actual forwarding of the packet
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is determined by the label beneath it
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in the stack. However, if the packet is
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forwarded further, the Router Alert Label
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should be pushed back onto the label stack
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before forwarding. The use of this label
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is analogous to the use of the
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'Router Alert Option' in IP packets
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[RFC2113]. Since this label
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cannot occur at the bottom of the stack,
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it is not associated with a
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particular network layer protocol.
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iii. A value of 2 represents the
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'IPv6 Explicit NULL Label'. This label
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value is only legal at the bottom of the
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label stack. It indicates that the label
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stack must be popped, and the forwarding
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of the packet must then be based on the
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IPv6 header.
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iv. A value of 3 represents the
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'Implicit NULL Label'.
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This is a label that an LSR may assign and
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distribute, but which never actually
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appears in the encapsulation. When an
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LSR would otherwise replace the label
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at the top of the stack with a new label,
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but the new label is 'Implicit NULL',
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the LSR will pop the stack instead of
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doing the replacement. Although
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this value may never appear in the
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encapsulation, it needs to be specified in
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the Label Distribution Protocol, so a value
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is reserved.
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v. Values 4-15 are reserved.
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* The frame relay label can be either 10-bits or
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23-bits depending on the DLCI field size and the
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upper 22-bits or upper 9-bits must be zero,
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respectively.
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* For an ATM label the lower 16-bits represents the
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VCI, the next 12-bits represents the VPI and the
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remaining bits MUST be zero.
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* The Generalized-MPLS (GMPLS) label contains a
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value greater than 2^24-1 and used in GMPLS
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as defined in [RFC3471]."
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REFERENCE
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"Multiprotocol Label Switching Architecture,
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RFC3031.
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MPLS Label Stack Encoding, [RFC3032].
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Use of Label Switching on Frame Relay Networks,
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RFC3034.
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MPLS using LDP and ATM VC Switching, RFC3035.
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Generalized Multiprotocol Label Switching
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(GMPLS) Architecture, [RFC3471]."
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SYNTAX Unsigned32 (0..4294967295)
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MplsLabelDistributionMethod ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"The label distribution method which is also called
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the label advertisement mode [RFC3036].
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Each interface on an LSR is configured to operate
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in either Downstream Unsolicited or Downstream
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on Demand."
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REFERENCE
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"Multiprotocol Label Switching Architecture,
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RFC3031.
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LDP Specification, RFC3036, Section 2.6.3."
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SYNTAX INTEGER {
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downstreamOnDemand(1),
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downstreamUnsolicited(2)
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}
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MplsLdpIdentifier ::= TEXTUAL-CONVENTION
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DISPLAY-HINT "1d.1d.1d.1d:2d"
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STATUS current
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DESCRIPTION
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"The LDP identifier is a six octet
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quantity which is used to identify a
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Label Switching Router (LSR) label space.
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The first four octets identify the LSR and
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must be a globally unique value, such as a
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32-bit router ID assigned to the LSR, and the
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last two octets identify a specific label
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space within the LSR."
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SYNTAX OCTET STRING (SIZE (6))
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MplsLsrIdentifier ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"The Label Switching Router (LSR) identifier is the
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first 4 bytes of the Label Distribution Protocol
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(LDP) identifier."
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SYNTAX OCTET STRING (SIZE (4))
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MplsLdpLabelType ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"The Layer 2 label types which are defined for MPLS
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LDP and/or CR-LDP are generic(1), atm(2), or
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frameRelay(3)."
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SYNTAX INTEGER {
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generic(1),
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atm(2),
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frameRelay(3)
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}
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MplsLSPID ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"A unique identifier within an MPLS network that is
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assigned to each LSP. This is assigned at the head
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end of the LSP and can be used by all LSRs
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to identify this LSP. This value is piggybacked by
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the signaling protocol when this LSP is signaled
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within the network. This identifier can then be
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used at each LSR to identify which labels are
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being swapped to other labels for this LSP. This
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object can also be used to disambiguate LSPs that
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share the same RSVP sessions between the same
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source and destination.
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For LSPs established using CR-LDP, the LSPID is
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composed of the ingress LSR Router ID (or any of
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its own IPv4 addresses) and a locally unique
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CR-LSP ID to that LSR. The first two bytes carry
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the CR-LSPID, and the remaining 4 bytes carry
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the Router ID. The LSPID is useful in network
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management, in CR-LSP repair, and in using
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an already established CR-LSP as a hop in
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an ER-TLV.
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For LSPs signaled using RSVP-TE, the LSP ID is
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defined as a 16-bit (2 byte) identifier used
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in the SENDER_TEMPLATE and the FILTER_SPEC
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that can be changed to allow a sender to
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share resources with itself. The length of this
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object should only be 2 or 6 bytes. If the length
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of this octet string is 2 bytes, then it must
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identify an RSVP-TE LSPID, or it is 6 bytes,
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it must contain a CR-LDP LSPID."
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REFERENCE
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"RSVP-TE: Extensions to RSVP for LSP Tunnels,
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[RFC3209].
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Constraint-Based LSP Setup using LDP,
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[RFC3212]."
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SYNTAX OCTET STRING (SIZE (2|6))
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MplsLspType ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"Types of Label Switch Paths (LSPs)
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on a Label Switching Router (LSR) or a
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Label Edge Router (LER) are:
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unknown(1) -- if the LSP is not known
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to be one of the following.
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terminatingLsp(2) -- if the LSP terminates
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on the LSR/LER, then this
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is an egressing LSP
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which ends on the LSR/LER,
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originatingLsp(3) -- if the LSP originates
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from this LSR/LER, then
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this is an ingressing LSP
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which is the head-end of
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the LSP,
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crossConnectingLsp(4) -- if the LSP ingresses
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and egresses on the LSR,
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then it is
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cross-connecting on that
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LSR."
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SYNTAX INTEGER {
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unknown(1),
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terminatingLsp(2),
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originatingLsp(3),
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crossConnectingLsp(4)
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}
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MplsOwner ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"This object indicates the local network
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management subsystem that originally created
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the object(s) in question. The values of
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this enumeration are defined as follows:
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unknown(1) - the local network management
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subsystem cannot discern which
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component created the object.
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other(2) - the local network management
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subsystem is able to discern which component
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created the object, but the component is not
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listed within the following choices,
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e.g., command line interface (cli).
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snmp(3) - The Simple Network Management Protocol
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was used to configure this object initially.
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ldp(4) - The Label Distribution Protocol was
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used to configure this object initially.
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crldp(5) - The Constraint-Based Label Distribution
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Protocol was used to configure this object
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initially.
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rsvpTe(6) - The Resource Reservation Protocol was
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used to configure this object initially.
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policyAgent(7) - A policy agent (perhaps in
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combination with one of the above protocols) was
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used to configure this object initially.
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An object created by any of the above choices
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MAY be modified or destroyed by the same or a
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different choice."
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SYNTAX INTEGER {
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unknown(1),
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other(2),
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snmp(3),
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ldp(4),
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crldp(5),
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rsvpTe(6),
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policyAgent(7)
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}
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MplsPathIndexOrZero ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"A unique identifier used to identify a specific
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path used by a tunnel. A value of 0 (zero) means
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that no path is in use."
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SYNTAX Unsigned32(0..4294967295)
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MplsPathIndex ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"A unique value to index (by Path number) an
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entry in a table."
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SYNTAX Unsigned32(1..4294967295)
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MplsRetentionMode ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"The label retention mode which specifies whether
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an LSR maintains a label binding for a FEC
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learned from a neighbor that is not its next hop
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for the FEC.
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If the value is conservative(1) then advertised
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label mappings are retained only if they will be
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used to forward packets, i.e., if label came from
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a valid next hop.
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If the value is liberal(2) then all advertised
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label mappings are retained whether they are from
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a valid next hop or not."
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REFERENCE
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"Multiprotocol Label Switching Architecture,
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RFC3031.
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LDP Specification, RFC3036, Section 2.6.2."
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SYNTAX INTEGER {
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conservative(1),
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liberal(2)
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}
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MplsTunnelAffinity ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"Describes the configured 32-bit Include-any,
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include-all, or exclude-all constraint for
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constraint-based link selection."
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REFERENCE
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"RSVP-TE: Extensions to RSVP for LSP Tunnels,
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RFC3209, Section 4.7.4."
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SYNTAX Unsigned32(0..4294967295)
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MplsTunnelIndex ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"A unique index into mplsTunnelTable.
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For tunnels signaled using RSVP, this value
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should correspond to the RSVP Tunnel ID
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used for the RSVP-TE session."
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SYNTAX Unsigned32 (0..65535)
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MplsTunnelInstanceIndex ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"The tunnel entry with instance index 0
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should refer to the configured tunnel
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interface (if one exists).
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Values greater than 0, but less than or
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equal to 65535, should be used to indicate
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signaled (or backup) tunnel LSP instances.
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For tunnel LSPs signaled using RSVP,
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this value should correspond to the
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RSVP LSP ID used for the RSVP-TE
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LSP.
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Values greater than 65535 apply to FRR
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detour instances."
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SYNTAX Unsigned32(0|1..65535|65536..4294967295)
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TeHopAddressType ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"A value that represents a type of address for a
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Traffic Engineered (TE) Tunnel hop.
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unknown(0) An unknown address type. This value
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MUST be used if the value of the
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corresponding TeHopAddress object is a
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zero-length string. It may also be
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used to indicate a TeHopAddress which
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is not in one of the formats defined
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below.
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ipv4(1) An IPv4 network address as defined by
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the InetAddressIPv4 TEXTUAL-CONVENTION
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[RFC3291].
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ipv6(2) A global IPv6 address as defined by
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the InetAddressIPv6 TEXTUAL-CONVENTION
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[RFC3291].
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asnumber(3) An Autonomous System (AS) number as
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defined by the TeHopAddressAS
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TEXTUAL-CONVENTION.
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unnum(4) An unnumbered interface index as
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defined by the TeHopAddressUnnum
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TEXTUAL-CONVENTION.
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lspid(5) An LSP ID for TE Tunnels
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(RFC3212) as defined by the
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MplsLSPID TEXTUAL-CONVENTION.
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Each definition of a concrete TeHopAddressType
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value must be accompanied by a definition
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of a TEXTUAL-CONVENTION for use with that
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TeHopAddress.
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To support future extensions, the TeHopAddressType
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TEXTUAL-CONVENTION SHOULD NOT be sub-typed in
|
|
object type definitions. It MAY be sub-typed in
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compliance statements in order to require only a
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subset of these address types for a compliant
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implementation.
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|
|
Implementations must ensure that TeHopAddressType
|
|
objects and any dependent objects
|
|
(e.g., TeHopAddress objects) are consistent.
|
|
An inconsistentValue error must be generated
|
|
if an attempt to change a TeHopAddressType
|
|
object would, for example, lead to an
|
|
undefined TeHopAddress value that is
|
|
not defined herein. In particular,
|
|
TeHopAddressType/TeHopAddress pairs
|
|
must be changed together if the address
|
|
type changes (e.g., from ipv6(2) to ipv4(1))."
|
|
|
|
REFERENCE
|
|
"TEXTUAL-CONVENTIONs for Internet Network
|
|
Addresses, RFC3291.
|
|
|
|
Constraint-Based LSP Setup using LDP,
|
|
[RFC3212]"
|
|
|
|
SYNTAX INTEGER {
|
|
unknown(0),
|
|
ipv4(1),
|
|
ipv6(2),
|
|
asnumber(3),
|
|
unnum(4),
|
|
lspid(5)
|
|
}
|
|
|
|
TeHopAddress ::= TEXTUAL-CONVENTION
|
|
STATUS current
|
|
DESCRIPTION
|
|
"Denotes a generic Tunnel hop address,
|
|
that is, the address of a node which
|
|
an LSP traverses, including the source
|
|
and destination nodes. An address may be
|
|
very concrete, for example, an IPv4 host
|
|
address (i.e., with prefix length 32);
|
|
if this IPv4 address is an interface
|
|
address, then that particular interface
|
|
must be traversed. An address may also
|
|
specify an 'abstract node', for example,
|
|
an IPv4 address with prefix length
|
|
less than 32, in which case, the LSP
|
|
can traverse any node whose address
|
|
falls in that range. An address may
|
|
also specify an Autonomous System (AS),
|
|
in which case the LSP can traverse any
|
|
node that falls within that AS.
|
|
|
|
A TeHopAddress value is always interpreted within
|
|
the context of an TeHopAddressType value. Every
|
|
usage of the TeHopAddress TEXTUAL-CONVENTION
|
|
is required to specify the TeHopAddressType object
|
|
which provides the context. It is suggested that
|
|
the TeHopAddressType object is logically registered
|
|
before the object(s) which use the TeHopAddress
|
|
TEXTUAL-CONVENTION if they appear in the
|
|
same logical row.
|
|
|
|
The value of a TeHopAddress object must always be
|
|
consistent with the value of the associated
|
|
TeHopAddressType object. Attempts to set a
|
|
TeHopAddress object to a value which is
|
|
inconsistent with the associated TeHopAddressType
|
|
must fail with an inconsistentValue error."
|
|
SYNTAX OCTET STRING (SIZE (0..32))
|
|
|
|
TeHopAddressAS ::= TEXTUAL-CONVENTION
|
|
STATUS current
|
|
DESCRIPTION
|
|
"Represents a two or four octet AS number.
|
|
The AS number is represented in network byte
|
|
order (MSB first). A two-octet AS number has
|
|
the two MSB octets set to zero."
|
|
REFERENCE
|
|
"Textual Conventions for Internet Network
|
|
Addresses, [RFC3291]. The
|
|
InetAutonomousSystemsNumber TEXTUAL-CONVENTION
|
|
has a SYNTAX of Unsigned32, whereas this TC
|
|
has a SYNTAX of OCTET STRING (SIZE (4)).
|
|
Both TCs represent an autonomous system number
|
|
but use different syntaxes to do so."
|
|
SYNTAX OCTET STRING (SIZE (4))
|
|
|
|
TeHopAddressUnnum ::= TEXTUAL-CONVENTION
|
|
STATUS current
|
|
DESCRIPTION
|
|
"Represents an unnumbered interface:
|
|
|
|
octets contents encoding
|
|
1-4 unnumbered interface network-byte order
|
|
|
|
The corresponding TeHopAddressType value is
|
|
unnum(5)."
|
|
SYNTAX OCTET STRING(SIZE(4))
|
|
|
|
END
|