Request for Comments: 7697
Category: Standards Track
ISSN: 2070-1721
Infinera
S. Aldrin
Google, Inc.
M. Venkatesan
Dell, Inc.
K. Sampath
Redeem
T. Nadeau
Brocade
S. Boutros
VMware, Inc.
January 2016
MPLS Transport Profile (MPLS-TP) Operations, Administration, and
Maintenance (OAM) Identifiers Management Information Base (MIB)
Abstract
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This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects to configure the Operations, Administration, and Maintenance (OAM) identifiers for Multiprotocol Label Switching (MPLS) and the MPLS-based Transport Profile (TP).
Status of This Memo
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This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7697.
Copyright Notice
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Copyright © 2016 IETF Trust and the persons identified as the document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
Table of Contents
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1. Introduction ....................................................3 2. The Internet-Standard Management Framework ......................3 3. Overview ........................................................3 3.1. Conventions Used in This Document ..........................3 3.2. Terminology ................................................4 3.3. Acronyms ...................................................4 4. Feature List ....................................................5 5. Brief Description of MIB Objects ................................5 5.1. mplsOamIdMegTable ..........................................5 5.2. mplsOamIdMeTable ...........................................5 6. MPLS OAM Identifier Configuration for MPLS LSP: Example .........6 7. MPLS OAM Identifiers MIB Definitions ............................8 8. Security Considerations ........................................31 9. IANA Considerations ............................................32 9.1. IANA Considerations for MPLS-OAM-ID-STD-MIB ...............32 10. References ....................................................32 10.1. Normative References .....................................32 10.2. Informative References ...................................34 Acknowledgments ...................................................35 Authors' Addresses ................................................36
1. Introduction
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This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects for modeling a Transport Profile (TP) based on Multiprotocol Label Switching (MPLS) [RFC3031].
This MIB module should be used for performing the OAM (Operations, Administration, and Maintenance) operations for MPLS Tunnel LSPs (Label Switched Paths), Pseudowires, and Sections.
At the time of this writing, SNMP SET is no longer recommended as a way to configure MPLS networks as was described in [RFC3812]. However, since the MIB modules specified in this document are intended to work in parallel with the MIB modules for MPLS specified in [RFC3812], certain objects defined here are specified with a MAX-ACCESS of read-write or read-create so that specifications of the base tables in [RFC3812] and the new MIB modules in this document are consistent. Although the example described in Section 6 specifies means to configure OAM identifiers for MPLS-TP Tunnels, this should be seen as indicating how the MIB values would be returned in the specified circumstances having been configured by alternative means.
2. The Internet-Standard Management Framework
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For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC3410 [RFC3410].
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 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].
3. Overview
3.1. Conventions Used in This Document
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The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119].
3.2. Terminology
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This document uses terminology from the Multiprotocol Label Switching Architecture [RFC3031], the MPLS Traffic Engineering (TE) MIB [RFC3812], the MPLS Label Switching Router (LSR) MIB [RFC3813], the OAM Framework for MPLS-Based Transport Networks [RFC6371], "MPLS Transport Profile (MPLS-TP) Identifiers" [RFC6370], MPLS-TP Identifiers Following ITU-T Conventions [RFC6923], and OAM in MPLS Transport Networks [RFC5860].
3.3. Acronyms
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BFD:
Bidirectional Forwarding Detection
ICC:
ITU Carrier Code
IP:
Internet Protocol
LSP:
Label Switched Path
LSR:
Label Switching Router
ME:
Maintenance Entity
MEG:
Maintenance Entity Group
MEP:
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Maintenance Entity Group End Point
MIB:
Management Information Base
MIP:
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Maintenance Entity Group Intermediate Point
MP:
Maintenance Point
MPLS:
Multiprotocol Label Switching
MPLS-TP:
MPLS Transport Profile
PW:
Pseudowire
TE:
Traffic Engineering
TP:
Transport Profile
4. Feature List
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The MPLS transport profile OAM identifiers MIB module is designed to satisfy the following requirements and constraints:
- The MIB module supports configuration of OAM identifiers for MPLS point-to-point Tunnels, point-to-multipoint LSPs, co-routed bidirectional LSPs, associated bidirectional LSPs, and Pseudowires.
5. Brief Description of MIB Objects
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The objects described in this section support the functionality described in [RFC5654] and [RFC6370]. The tables support both IP-compatible and ICC-based OAM identifiers configurations for MPLS Tunnels, LSPs, and Pseudowires.
5.1. mplsOamIdMegTable
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The mplsOamIdMegTable is used to manage one or more Maintenance Entities (MEs) that belong to the same transport path.
When a new entry is created with mplsOamIdMegOperatorType set to ipCompatible (1), then as per [RFC6370] (MEG_ID for an LSP is LSP_ID, and MEG_ID for a PW is PW_Path_ID), MEP_ID can be automatically formed.
For an ICC-based transport path, the user is expected to configure the ICC identifier explicitly in this table for MPLS Tunnels, LSPs, and Pseudowires.
5.2. mplsOamIdMeTable
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The mplsOamIdMeTable defines a relationship between two points (source and sink) of a transport path to which maintenance and monitoring operations apply. The two points that define an ME are called Maintenance Entity Group End Points (MEPs).
In between MEPs, there are zero or more intermediate points, called Maintenance Entity Group Intermediate Points (MIPs). MEPs and MIPs are associated with the MEG and can be shared by more than one ME in a MEG.
6. MPLS OAM Identifier Configuration for MPLS LSP: Example
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In this section, we provide an example of the OAM identifier configuration for an MPLS co-routed bidirectional LSP.
This example provides usage of MEG and ME tables for management and monitoring operations of an MPLS LSP.
This example considers the OAM identifiers configuration on a head-end LSR to manage and monitor an MPLS LSP. Only relevant objects that are applicable for IP-based OAM identifiers of MPLS co-routed bidirectional LSPs are illustrated here.
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In the mplsOamIdMegTable:
{ -- MEG index (Index to the table) mplsOamIdMegIndex = 1, mplsOamIdMegName = "MEG1", mplsOamIdMegOperatorType = ipCompatible (1), mplsOamIdMegServicePointerType = lsp (1), mplsOamIdMegMpLocation = perNode (1), -- Mandatory parameters needed to activate the row go here mplsOamIdMegRowStatus = createAndGo (4), mplsOamIdMegPathFlow = coRoutedBidirectionalPointToPoint (2) }-
This will create an entry in the mplsOamIdMegTable to manage and monitor the MPLS Tunnel.
The following ME table is used to associate the path information to a MEG.
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In the mplsOamIdMeTable:
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{ -- ME index (Index to the table) mplsOamIdMeIndex = 1, -- MP index (Index to the table) mplsOamIdMeMpIndex = 1, mplsOamIdMeName = "ME1", mplsOamIdMeMpIfIndex = 0, -- The source MEP ID is derived from the IP-compatible MPLS LSP mplsOamIdMeSourceMepIndex = 0, -- The sink MEP ID is derived from the IP-compatible MPLS LSP mplsOamIdMeSinkMepIndex = 0, mplsOamIdMeMpType = mep (1), mplsOamIdMeMepDirection = down (2), -- RowPointer MUST point to the first accessible column of an -- MPLS LSP mplsOamIdMeServicePointer = mplsTunnelName.1.1.10.20, -- Mandatory parameters needed to activate the row go here mplsOamIdMeRowStatus = createAndGo (4) } -
7. MPLS OAM Identifiers MIB Definitions
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MPLS-OAM-ID-STD-MIB DEFINITIONS ::= BEGIN
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IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, Unsigned32 FROM SNMPv2-SMI -- RFC 2578 MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP FROM SNMPv2-CONF -- RFC 2580 RowStatus, RowPointer, StorageType FROM SNMPv2-TC -- RFC 2579 SnmpAdminString FROM SNMP-FRAMEWORK-MIB -- RFC 3411 IndexIntegerNextFree FROM DIFFSERV-MIB -- RFC 3289 mplsStdMIB FROM MPLS-TC-STD-MIB -- RFC 3811 InterfaceIndexOrZero, ifGeneralInformationGroup, ifCounterDiscontinuityGroup FROM IF-MIB; -- RFC 2863-
mplsOamIdStdMIB MODULE-IDENTITY
LAST-UPDATED "201601070000Z" -- January 07, 2016 ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group" CONTACT-INFO "Sam Aldrin Google, Inc. 1600 Amphitheatre Parkway Mountain View, CA 94043 USA Email: [email protected] Thomas D. Nadeau Email: [email protected] Venkatesan Mahalingam Dell, Inc. 5450 Great America Parkway Santa Clara, CA 95054 USA Email: [email protected] Kannan KV Sampath Redeem India Email: [email protected]-
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Ping Pan
Infinera
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Sami Boutros VMware, Inc. 3401 Hillview Ave. Palo Alto, CA 94304 USA Email: [email protected]"-
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DESCRIPTION
"Copyright © 2016 IETF Trust and the persons identified
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as authors of the code. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info).
This MIB module contains generic object definitions for MPLS OAM identifiers."
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-- Revision history REVISION "201601070000Z" -- January 07, 2016 DESCRIPTION "MPLS OAM Identifiers MIB objects for Tunnels, LSPs, Pseudowires, and Sections." ::= { mplsStdMIB 21 } -- Top-level components of this MIB module -- notifications mplsOamIdNotifications OBJECT IDENTIFIER ::= { mplsOamIdStdMIB 0 } -- tables, scalars mplsOamIdObjects OBJECT IDENTIFIER ::= { mplsOamIdStdMIB 1 }-
-- conformance
mplsOamIdConformance
OBJECT IDENTIFIER ::= { mplsOamIdStdMIB 2 }-
-- Start of MPLS Transport Profile MEG table
mplsOamIdMegIndexNext OBJECT-TYPE
SYNTAX IndexIntegerNextFree (0..4294967295) MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains an unused value for mplsOamIdMegIndex, or a zero to indicate that none exist. Negative values are not allowed, as they do not correspond to valid values of mplsOamIdMegIndex." ::= { mplsOamIdObjects 1 }-
mplsOamIdMegTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsOamIdMegEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains information about the Maintenance Entity Groups (MEGs). A MEG, as mentioned in the MPLS-TP OAM framework, defines a set of one or more Maintenance Entities (MEs). MEs define a relationship between any two points of a transport path in an OAM domain to which maintenance and monitoring operations apply." ::= { mplsOamIdObjects 2 }-
mplsOamIdMegEntry OBJECT-TYPE
SYNTAX MplsOamIdMegEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents an MPLS-TP MEG. An entry can be created by a network administrator or by an SNMP agent as instructed by an MPLS-TP OAM framework.-
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When a new entry is created with mplsOamIdMegOperatorType set to ipCompatible (1), then as per RFC 6370 (MEG_ID for an LSP is LSP_ID, and MEG_ID for a PW is PW_Path_ID), MEP_ID can be automatically formed.
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For a co-routed bidirectional LSP, MEG_ID is A1-{Global_ID::Node_ID::Tunnel_Num}::Z9-{Global_ID:: Node_ID::Tunnel_Num}::LSP_Num. -
For an associated bidirectional LSP, MEG_ID is
A1-{Global_ID::Node_ID::Tunnel_Num::LSP_Num}::
Z9-{Global_ID::Node_ID::Tunnel_Num::LSP_Num}.
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For an LSP, MEP_ID is formed using Global_ID::Node_ID::Tunnel_Num::LSP_Num. For a PW, MEG_ID is formed using AGI:: A1-{Global_ID::Node_ID::AC_ID}:: Z9-{Global_ID::Node_ID::AC_ID}. For a PW, MEP_ID is formed using AGI::Global_ID::Node_ID::AC_ID.-
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MEP_ID is retrieved from the mplsOamIdMegServicePointer object based on the mplsOamIdMegServicePointerType value. The ICC MEG_ID for an LSP and a PW is formed using the objects mplsOamIdMegIdIcc and mplsOamIdMegIdUmc.
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MEP_ID can be formed using MEG_ID::MEP_Index." REFERENCE "1. RFC 5860: Requirements for Operations, Administration, and Maintenance (OAM) in MPLS Transport Networks, May 2010. 2. RFC 6371: Operations, Administration, and Maintenance Framework for MPLS-Based Transport Networks, September 2011, Section 3. 3. RFC 6370: MPLS Transport Profile (MPLS-TP) Identifiers, September 2011. 4. RFC 6923: MPLS Transport Profile (MPLS-TP) Identifiers Following ITU-T Conventions, May 2013." INDEX { mplsOamIdMegIndex } ::= { mplsOamIdMegTable 1 } MplsOamIdMegEntry ::= SEQUENCE { mplsOamIdMegIndex Unsigned32, mplsOamIdMegName SnmpAdminString, mplsOamIdMegOperatorType INTEGER, mplsOamIdMegIdCc SnmpAdminString, mplsOamIdMegIdIcc SnmpAdminString, mplsOamIdMegIdUmc SnmpAdminString, mplsOamIdMegServicePointerType INTEGER, mplsOamIdMegMpLocation INTEGER, mplsOamIdMegPathFlow INTEGER, mplsOamIdMegOperStatus INTEGER, mplsOamIdMegSubOperStatus BITS, mplsOamIdMegRowStatus RowStatus, mplsOamIdMegStorageType StorageType } mplsOamIdMegIndex OBJECT-TYPE SYNTAX Unsigned32 (1..4294967295) MAX-ACCESS not-accessible STATUS current DESCRIPTION "Index for the conceptual row identifying a MEG within this MEG table. Managers should obtain new values for row creation in this table by reading mplsOamIdMegIndexNext." ::= { mplsOamIdMegEntry 1 } mplsOamIdMegName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(0..48)) MAX-ACCESS read-create STATUS current DESCRIPTION "Each MEG has a unique name amongst all those used or available to a service provider or operator. It facilitates easy identification of administrative responsibility for each MEG." ::= { mplsOamIdMegEntry 2 }-
mplsOamIdMegOperatorType OBJECT-TYPE
SYNTAX INTEGER { ipCompatible (1), iccBased (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the operator type for the MEG. Conceptual rows having 'iccBased' as the operator type MUST have valid values for the objects mplsOamIdMegIdIcc and mplsOamIdMegIdUmc when the row status is active." REFERENCE "1. RFC 6370: MPLS Transport Profile (MPLS-TP) Identifiers, September 2011. 2. RFC 6923: MPLS Transport Profile (MPLS-TP) Identifiers Following ITU-T Conventions, May 2013, Section 3.1." DEFVAL { ipCompatible } ::= { mplsOamIdMegEntry 3 }-
mplsOamIdMegIdCc OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE(0..2)) MAX-ACCESS read-create STATUS current DESCRIPTION "Global uniqueness is assured by concatenating the ICC with a Country Code (CC). The Country Code (alpha-2) is a string of two alphabetic characters represented with uppercase letters (i.e., A-Z). This object MUST contain a non-null value if the MplsOamIdMegOperatorType value is iccBased (2); otherwise, a null value with octet size 0 should be assigned." REFERENCE "RFC 6923: MPLS Transport Profile (MPLS-TP) Identifiers Following ITU-T Conventions, May 2013, Section 3." DEFVAL {""} ::= { mplsOamIdMegEntry 4 }-
mplsOamIdMegIdIcc OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE(0..6)) MAX-ACCESS read-create STATUS current DESCRIPTION "Unique code assigned to a network operator or service provider; maintained by the ITU-T. This is the ITU Carrier Code used to form the MEGID. This object MUST contain a non-null value if the MplsOamIdMegOperatorType value is iccBased (2); otherwise, a null value with octet size 0 should be assigned." REFERENCE "RFC 6923: MPLS Transport Profile (MPLS-TP) Identifiers Following ITU-T Conventions, May 2013, Section 3.1." DEFVAL {""} ::= { mplsOamIdMegEntry 5 }-
mplsOamIdMegIdUmc OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE(0..7)) MAX-ACCESS read-create STATUS current DESCRIPTION "Unique code assigned by a network operator or service provider. This code is appended to mplsOamIdMegIdIcc to form the MEGID. This object MUST contain a non-null value if the MplsOamIdMegOperatorType value is iccBased (2); otherwise, a null value with octet size 0 should be assigned." REFERENCE "RFC 6923: MPLS Transport Profile (MPLS-TP) Identifiers Following ITU-T Conventions, May 2013, Section 7.1." DEFVAL {""} ::= { mplsOamIdMegEntry 6 }-
mplsOamIdMegServicePointerType OBJECT-TYPE
SYNTAX INTEGER { tunnel (1), lsp (2), pseudowire (3), section (4) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the service type for the MEG. If the service type indicates tunnel (1), the service pointer in the mplsOamIdMeTable points to an entry in the point-to-point mplsTunnelTable (RFC 3812).-
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If the service type indicates lsp (2), the service pointer in the mplsOamIdMeTable points to an entry in the co-routed or associated bidirectional mplsTunnelTable.
If the value is the pseudowire (3) service type, the service pointer in the mplsOamIdMeTable points to an entry in the pwTable (RFC 5601).
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If the value is the section (4) service type, the service pointer in the mplsOamIdMeTable points to an entry in the mplsTunnelTable (RFC 3812)." REFERENCE "1. RFC 3812: Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB), June 2004. 2. RFC 5601: Pseudowire (PW) Management Information Base (MIB), July 2009." DEFVAL { lsp } ::= { mplsOamIdMegEntry 7 }-
mplsOamIdMegMpLocation OBJECT-TYPE
SYNTAX INTEGER { perNode (1), perInterface (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the MP location type for this MEG.-
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If the value is perNode, then the MEG in the LSR supports only perNode MEPs/MIPs, i.e., only one MEP/MIP in an LSR.
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If the value is perInterface, then the MEG in the LSR supports perInterface MEPs/MIPs, i.e., two MEPs/MIPs in an LSR." REFERENCE "RFC 6371: Operations, Administration, and Maintenance Framework for MPLS-Based Transport Networks, September 2011." DEFVAL { perNode } ::= { mplsOamIdMegEntry 8 }-
mplsOamIdMegPathFlow OBJECT-TYPE
SYNTAX INTEGER { unidirectionalPointToPoint (1), coRoutedBidirectionalPointToPoint (2), associatedBidirectionalPointToPoint (3), unidirectionalPointToMultiPoint (4) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the transport path flow for this MEG. In the case of a unidirectional point-to-point transport path, a single unidirectional ME is defined to monitor it. In the case of associated bidirectional point-to-point transport paths, two independent unidirectional MEs are defined to independently monitor each direction. In the case of co-routed bidirectional point-to-point transport paths, a single bidirectional ME is defined to monitor both directions congruently. In the case of unidirectional point-to-multipoint transport paths, a single unidirectional ME for each leaf is defined to monitor the transport path from the root to that leaf." REFERENCE "RFC 6371: Operations, Administration, and Maintenance Framework for MPLS-Based Transport Networks, September 2011." DEFVAL { coRoutedBidirectionalPointToPoint } ::= { mplsOamIdMegEntry 9 }-
mplsOamIdMegOperStatus OBJECT-TYPE
SYNTAX INTEGER { up (1), down (2) } MAX-ACCESS read-only STATUS current DESCRIPTION "This object specifies the operational status of the Maintenance Entity Group (MEG). This object is used to send the notification to the SNMP manager about the MEG.-
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The value up (1) indicates that the MEG and its monitored path are operationally up. The value down (2) indicates that the MEG is operationally down.
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When the value of mplsOamIdMegOperStatus is up (1), all the bits of mplsOamIdMegSubOperStatus must be cleared. When the value of mplsOamIdMegOperStatus is down (2), at least one bit of mplsOamIdMegSubOperStatus must be set." ::= { mplsOamIdMegEntry 10 }-
mplsOamIdMegSubOperStatus OBJECT-TYPE
SYNTAX BITS { megDown (0), meDown (1), oamAppDown (2), pathDown (3) } MAX-ACCESS read-only STATUS current DESCRIPTION "This object specifies the reason why the MEG operational status, as indicated by the object mplsOamIdMegOperStatus, is down. This object is used to send the notification to the SNMP manager about the MEG.-
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The bit 0 (megDown) indicates that the MEG is down. The bit 1 (meDown) indicates that the ME table is down. The bit 2 (oamAppDown) indicates that the OAM application (LSP or PW) monitored by this MEG is down. Currently, BFD
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is the only supported OAM application. The bit 3 (pathDown) indicates that the underlying LSP or PW is down." ::= { mplsOamIdMegEntry 11 }-
mplsOamIdMegRowStatus OBJECT-TYPE
SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This variable is used to create, modify, and/or delete a row in this table. When a row in this table is in the active(1) state, no objects in that row can be modified by the agent except mplsOamIdMegRowStatus." ::= { mplsOamIdMegEntry 12 }-
mplsOamIdMegStorageType OBJECT-TYPE
SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "This variable indicates the storage type for this object. Conceptual rows having the value 'permanent' need not allow write access to any columnar objects in the row." DEFVAL { volatile } ::= { mplsOamIdMegEntry 13 }-
-- End of MPLS Transport Profile MEG table
-- Start of MPLS Transport Profile ME table
mplsOamIdMeIndexNext OBJECT-TYPE
SYNTAX IndexIntegerNextFree (0..4294967295) MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains an unused value for mplsOamIdMeIndex, or a zero to indicate that none exist. Negative values are not allowed, as they do not correspond to valid values of mplsOamIdMeIndex." ::= { mplsOamIdObjects 3 }-
mplsOamIdMeMpIndexNext OBJECT-TYPE
SYNTAX IndexIntegerNextFree (0..4294967295) MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains an unused value for mplsOamIdMeMpIndex, or a zero to indicate that none exist. Negative values are not allowed, as they do not correspond to valid values of mplsOamIdMeMpIndex." ::= { mplsOamIdObjects 4 }-
mplsOamIdMeTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsOamIdMeEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains MPLS-TP ME information.-
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The ME is some portion of a transport path that requires management bounded by two points (called MEPs), and the relationship between those points to which maintenance and monitoring operations apply.
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This table is generic enough to handle MEP and MIP information within a MEG." ::= { mplsOamIdObjects 5 }-
mplsOamIdMeEntry OBJECT-TYPE
SYNTAX MplsOamIdMeEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in this table represents an MPLS-TP ME. This entry represents the ME if the source and sink MEPs are defined.-
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An ME is a point-to-point entity. One ME has two such MEPs. A MEG is a group of one or more MEs. One MEG can have two or more MEPs.
For a point-to-point LSP, one MEG has one ME, and this ME is associated with two MEPs (source and sink MEPs) within a MEG. Each mplsOamIdMeIndex value denotes the ME within a MEG.
In the case of unidirectional point-to-point transport paths, a single unidirectional ME is defined to monitor it, and mplsOamIdMeServicePointer points to a unidirectional point-to-point path.
In the case of associated bidirectional point-to-point transport paths, two independent unidirectional MEs are defined to independently monitor each direction, and each mplsOamIdMeServicePointer MIB object points to a unique unidirectional transport path.
This has implications for transactions that terminate at or query a MIP, as a return path from a MIP to a source MEP does not necessarily exist within the MEG.In the case of co-routed bidirectional point-to-point transport paths, a single bidirectional ME is defined to monitor both directions congruently, and the mplsOamIdMeServicePointer MIB object points to a co-routed bidirectional point-to-point transport path.
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In the case of unidirectional point-to-multipoint transport paths, a single unidirectional ME for each leaf is defined to monitor the transport path from the root to that leaf, and each leaf has different transport path information in the mplsOamIdMeServicePointer MIB object. Note that the MplsOamIdMeEntry should be created manually once the MEG is configured for OAM operations." INDEX { mplsOamIdMegIndex, mplsOamIdMeIndex, mplsOamIdMeMpIndex } ::= { mplsOamIdMeTable 1 } MplsOamIdMeEntry ::= SEQUENCE { mplsOamIdMeIndex Unsigned32, mplsOamIdMeMpIndex Unsigned32, mplsOamIdMeName SnmpAdminString, mplsOamIdMeMpIfIndex InterfaceIndexOrZero, mplsOamIdMeSourceMepIndex Unsigned32, mplsOamIdMeSinkMepIndex Unsigned32, mplsOamIdMeMpType INTEGER, mplsOamIdMeMepDirection INTEGER, mplsOamIdMeServicePointer RowPointer, mplsOamIdMeRowStatus RowStatus, mplsOamIdMeStorageType StorageType } mplsOamIdMeIndex OBJECT-TYPE SYNTAX Unsigned32 (1..4294967295) MAX-ACCESS not-accessible STATUS current DESCRIPTION "Uniquely identifies an ME index within a MEG. Managers should obtain new values for row creation in this table by reading mplsOamIdMeIndexNext." ::= { mplsOamIdMeEntry 1 } mplsOamIdMeMpIndex OBJECT-TYPE SYNTAX Unsigned32 (1..4294967295) MAX-ACCESS not-accessible STATUS current DESCRIPTION "Indicates the Maintenance Point (MP) index that is used to create multiple MEPs in a node of a single ME. The value of this object can be the MEP index or the MIP index. Managers should obtain new values for row creation in this table by reading mplsOamIdMeMpIndexNext." ::= { mplsOamIdMeEntry 2 } mplsOamIdMeName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..48)) MAX-ACCESS read-create STATUS current DESCRIPTION "This object denotes the ME name. Each ME has a unique name within a MEG." ::= { mplsOamIdMeEntry 3 }-
mplsOamIdMeMpIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the MP interface. If the mplsOamIdMegMpLocation object value is perNode (1), the MP interface index should point to the incoming interface or outgoing interface, or be zero (to indicate that the MP OAM packets are initiated from the forwarding engine). -
If the mplsOamIdMegMpLocation object value is
perInterface (2), the MP interface index should point to
the incoming interface or outgoing interface."
-
REFERENCE "1. RFC 6371: Operations, Administration, and Maintenance Framework for MPLS-Based Transport Networks, September 2011. 2. RFC 2863: The Interfaces Group MIB, June 2000." DEFVAL { 0 } ::= { mplsOamIdMeEntry 4 } mplsOamIdMeSourceMepIndex OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the source MEP index of the ME. This object should be configured if the mplsOamIdMegOperatorType object in the mplsOamIdMegEntry is configured as iccBased (2). If the MEG is configured for an IP-based operator, the value of this object should be set to zero, and the MEP ID will be automatically derived from the service identifiers (MPLS-TP LSP/PW Identifier)." DEFVAL { 0 } ::= { mplsOamIdMeEntry 5 } mplsOamIdMeSinkMepIndex OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the sink MEP index of the ME. This object should be configured if the mplsOamIdMegOperatorType object in the mplsOamIdMegEntry is configured as iccBased (2). If the MEG is configured for an IP-based operator, the value of this object should be set to zero, and the MEP ID will be automatically derived from the service identifiers (MPLS-TP LSP/PW Identifier)." DEFVAL { 0 } ::= { mplsOamIdMeEntry 6 }-
mplsOamIdMeMpType OBJECT-TYPE
SYNTAX INTEGER { mep (1), mip (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the MP type within the MEG.-
-
-
The object should have the value mep (1) only in the ingress or egress nodes of the transport path.
-
-
The object can have the value mip (2) in the intermediate nodes and possibly in the egress nodes of the transport path." DEFVAL { mep } ::= { mplsOamIdMeEntry 7 }-
mplsOamIdMeMepDirection OBJECT-TYPE
SYNTAX INTEGER { up (1), down (2), notApplicable (3) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the direction of the MEP. This object should be configured if mplsOamIdMeMpType is configured as mep (1); otherwise, notApplicable (3) is set." DEFVAL { down } ::= { mplsOamIdMeEntry 8 }-
mplsOamIdMeServicePointer OBJECT-TYPE
SYNTAX RowPointer MAX-ACCESS read-create STATUS current DESCRIPTION "This variable represents a pointer to the MPLS-TP transport path. This value MUST point at an entry in the mplsTunnelEntry if mplsOamIdMegServicePointerType is configured as tunnel (1), lsp (2), or section (4), or at an entry in the pwEntry if mplsOamIdMegServicePointerType is configured as pseudowire (3). Note: This service pointer object is placed in the ME table instead of the MEG table, since it will be useful in the point-to-multipoint case, where each ME will point to different branches of a point-to-multipoint tree." ::= { mplsOamIdMeEntry 9 }-
mplsOamIdMeRowStatus OBJECT-TYPE
SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This variable is used to create, modify, and/or delete a row in this table. When a row in this table is in the active(1) state, no objects in that row can be modified by the agent except mplsOamIdMeRowStatus." ::= { mplsOamIdMeEntry 10 }-
mplsOamIdMeStorageType OBJECT-TYPE
SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "This variable indicates the storage type for this object. Conceptual rows having the value 'permanent' need not allow write access to any columnar objects in the row." DEFVAL { volatile } ::= { mplsOamIdMeEntry 11 }-
-- End of MPLS Transport Profile ME table
-- End of MPLS-TP OAM tables -- Notification definitions of MPLS-TP identifiers
-
mplsOamIdDefectCondition NOTIFICATION-TYPE
OBJECTS { mplsOamIdMegName, mplsOamIdMeName, mplsOamIdMegOperStatus, mplsOamIdMegSubOperStatus } STATUS current DESCRIPTION "This notification is sent whenever the operational status of the MEG is changed." ::= { mplsOamIdNotifications 1 }-- End of notifications
-- Module compliance
mplsOamIdCompliances
OBJECT IDENTIFIER ::= { mplsOamIdConformance 1 }mplsOamIdGroups
OBJECT IDENTIFIER ::= { mplsOamIdConformance 2 }-- Compliance requirement for fully compliant implementations
mplsOamIdModuleFullCompliance MODULE-COMPLIANCE
STATUS current DESCRIPTION "Compliance statement for agents that provide full support for the MPLS-TP-OAM-STD-MIB. Such devices can then be monitored and also be configured using this MIB module." MODULE IF-MIB -- The Interfaces Group MIB, RFC 2863 MANDATORY-GROUPS { ifGeneralInformationGroup, ifCounterDiscontinuityGroup } MODULE -- this module MANDATORY-GROUPS { mplsOamIdMegGroup, mplsOamIdMeGroup } GROUP mplsOamIdNotificationObjectsGroup DESCRIPTION "This group is only mandatory for those implementations that can efficiently implement the notifications contained in this group." GROUP mplsOamIdNotificationGroup DESCRIPTION "This group is only mandatory for those implementations that can efficiently implement the notifications contained in this group." ::= { mplsOamIdCompliances 1 } -
-- Compliance requirement for read-only implementations
-
-
-
mplsOamIdModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION-
"Compliance statement for agents that only provide
-
read-only support for the MPLS-TP-OAM-STD-MIB module."
-
-
MODULE -- this module
-
MANDATORY-GROUPS { mplsOamIdMegGroup, mplsOamIdMeGroup } GROUP mplsOamIdNotificationObjectsGroup DESCRIPTION "This group is only mandatory for those implementations that can efficiently implement the notifications contained in this group." GROUP mplsOamIdNotificationGroup DESCRIPTION "This group is only mandatory for those implementations that can efficiently implement the notifications contained in this group." -- mplsOamIdMegTable OBJECT mplsOamIdMegName MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegOperatorType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegIdCc MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegIdIcc MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegIdUmc MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegServicePointerType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegMpLocation MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegPathFlow MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegRowStatus SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMegStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." -- mplsOamIdMeTable OBJECT mplsOamIdMeName MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeMpIfIndex MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeSourceMepIndex MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeSinkMepIndex MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeMpType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeMepDirection MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeServicePointer MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeRowStatus SYNTAX RowStatus { active(1) } MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT mplsOamIdMeStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." ::= { mplsOamIdCompliances 2 }-- Units of conformance
mplsOamIdMegGroup OBJECT-GROUP
OBJECTS { mplsOamIdMegIndexNext, mplsOamIdMegName, mplsOamIdMegOperatorType, mplsOamIdMegIdCc, mplsOamIdMegIdIcc, mplsOamIdMegIdUmc, mplsOamIdMegServicePointerType, mplsOamIdMegMpLocation, mplsOamIdMegOperStatus, mplsOamIdMegSubOperStatus, mplsOamIdMegPathFlow, mplsOamIdMegRowStatus, mplsOamIdMegStorageType } STATUS current DESCRIPTION "Collection of objects needed for MPLS MEG information." ::= { mplsOamIdGroups 1 } mplsOamIdMeGroup OBJECT-GROUP OBJECTS { mplsOamIdMeIndexNext, mplsOamIdMeMpIndexNext, mplsOamIdMeName, mplsOamIdMeMpIfIndex, mplsOamIdMeSourceMepIndex, mplsOamIdMeSinkMepIndex, mplsOamIdMeMpType, mplsOamIdMeMepDirection, mplsOamIdMeServicePointer, mplsOamIdMeRowStatus, mplsOamIdMeStorageType } STATUS current DESCRIPTION "Collection of objects needed for MPLS ME information." ::= { mplsOamIdGroups 2 } mplsOamIdNotificationObjectsGroup OBJECT-GROUP OBJECTS { mplsOamIdMegOperStatus, mplsOamIdMegSubOperStatus } STATUS current DESCRIPTION "Collection of objects needed to implement notifications." ::= { mplsOamIdGroups 3 }mplsOamIdNotificationGroup NOTIFICATION-GROUP
NOTIFICATIONS { mplsOamIdDefectCondition } STATUS current DESCRIPTION "Set of notifications implemented in this module." ::= { mplsOamIdGroups 4 } END -
8. Security Considerations
-
This MIB relates to a system that will provide network connectivity and packet forwarding services. As such, improper manipulation of the objects represented by this MIB may result in denial of service to a large number of end-users.
There are a number of management objects defined in this MIB module with a MAX-ACCESS clause of read-write and/or read-create. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection opens devices to attack.
Some of the readable objects in this MIB module (i.e., objects with a MAX-ACCESS other than not-accessible) may be considered sensitive or vulnerable in some network environments. It is thus important to control even GET and/or NOTIFY access to these objects and possibly to even encrypt the values of these objects when sending them over the network via SNMP. These are the tables and objects and their sensitivity/vulnerability:
- The mplsOamIdMegTable and the mplsOamIdMeTable collectively show the MPLS OAM characteristics. If an administrator does not want to reveal this information, then these tables should be considered sensitive/vulnerable.
SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPsec), there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB module.
Implementations SHOULD provide the security features described by the SNMPv3 framework (see [RFC3410]), and implementations claiming compliance to the SNMPv3 standard MUST include full support for authentication and privacy via the User-based Security Model (USM) [RFC3414] with the AES cipher algorithm [RFC3826]. Implementations MAY also provide support for the Transport Security Model (TSM) [RFC5591] in combination with a secure transport such as SSH [RFC5592] or TLS/DTLS [RFC6353].
Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic security. It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an instance of this MIB module is properly configured to give access to the objects only to those principals (users) that have legitimate rights to indeed GET or SET (change/create/delete) them.
9. IANA Considerations
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As described in [RFC4221] and [RFC6639], and as requested in the MPLS-TC-STD-MIB [RFC3811], MPLS-related Standards Track MIB modules should be rooted under the mplsStdMIB subtree. The following subsection lists a new assignment that has been made by IANA under the mplsStdMIB subtree for the MPLS-OAM-ID-STD-MIB module defined in this document. New assignments can only be made via a Standards Action as specified in [RFC5226].
9.1. IANA Considerations for MPLS-OAM-ID-STD-MIB
-
IANA has to assign the OID { mplsStdMIB 21 } to the MPLS-OAM-ID-STD-MIB module specified in this document.
10. References
10.1. Normative References
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[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, <http://www.rfc-editor.org/info/rfc2119>. [RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, DOI 10.17487/RFC2578, April 1999, <http://www.rfc-editor.org/info/rfc2578>. [RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, DOI 10.17487/RFC2579, April 1999, <http://www.rfc-editor.org/info/rfc2579>. [RFC2580] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Conformance Statements for SMIv2", STD 58, RFC 2580, DOI 10.17487/RFC2580, April 1999, <http://www.rfc-editor.org/info/rfc2580>. [RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB", RFC 2863, DOI 10.17487/RFC2863, June 2000, <http://www.rfc-editor.org/info/rfc2863>. [RFC3031] Rosen, E., Viswanathan, A., and R. Callon, "Multiprotocol Label Switching Architecture", RFC 3031, DOI 10.17487/RFC3031, January 2001, <http://www.rfc-editor.org/info/rfc3031>. [RFC3289] Baker, F., Chan, K., and A. Smith, "Management Information Base for the Differentiated Services Architecture", RFC 3289, DOI 10.17487/RFC3289, May 2002, <http://www.rfc-editor.org/info/rfc3289>. [RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks", STD 62, RFC 3411, DOI 10.17487/RFC3411, December 2002, <http://www.rfc-editor.org/info/rfc3411>. [RFC3414] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", STD 62, RFC 3414, DOI 10.17487/RFC3414, December 2002, <http://www.rfc-editor.org/info/rfc3414>. [RFC3826] Blumenthal, U., Maino, F., and K. McCloghrie, "The Advanced Encryption Standard (AES) Cipher Algorithm in the SNMP User-based Security Model", RFC 3826, DOI 10.17487/RFC3826, June 2004, <http://www.rfc-editor.org/info/rfc3826>. [RFC5591] Harrington, D. and W. Hardaker, "Transport Security Model for the Simple Network Management Protocol (SNMP)", STD 78, RFC 5591, DOI 10.17487/RFC5591, June 2009, <http://www.rfc-editor.org/info/rfc5591>. [RFC5592] Harrington, D., Salowey, J., and W. Hardaker, "Secure Shell Transport Model for the Simple Network Management Protocol (SNMP)", RFC 5592, DOI 10.17487/RFC5592, June 2009, <http://www.rfc-editor.org/info/rfc5592>. [RFC5601] Nadeau, T., Ed., and D. Zelig, Ed., "Pseudowire (PW) Management Information Base (MIB)", RFC 5601, DOI 10.17487/RFC5601, July 2009, <http://www.rfc-editor.org/info/rfc5601>. [RFC6353] Hardaker, W., "Transport Layer Security (TLS) Transport Model for the Simple Network Management Protocol (SNMP)", STD 78, RFC 6353, DOI 10.17487/RFC6353, July 2011, <http://www.rfc-editor.org/info/rfc6353>.
10.2. Informative References
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[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, DOI 10.17487/RFC3410, December 2002, <http://www.rfc-editor.org/info/rfc3410>. [RFC3811] Nadeau, T., Ed., and J. Cucchiara, Ed., "Definitions of Textual Conventions (TCs) for Multiprotocol Label Switching (MPLS) Management", RFC 3811, DOI 10.17487/RFC3811, June 2004, <http://www.rfc-editor.org/info/rfc3811>. [RFC3812] Srinivasan, C., Viswanathan, A., and T. Nadeau, "Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB)", RFC 3812, DOI 10.17487/RFC3812, June 2004, <http://www.rfc-editor.org/info/rfc3812>. [RFC3813] Srinivasan, C., Viswanathan, A., and T. Nadeau, "Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) Management Information Base (MIB)", RFC 3813, DOI 10.17487/RFC3813, June 2004, <http://www.rfc-editor.org/info/rfc3813>. [RFC4221] Nadeau, T., Srinivasan, C., and A. Farrel, "Multiprotocol Label Switching (MPLS) Management Overview", RFC 4221, DOI 10.17487/RFC4221, November 2005, <http://www.rfc-editor.org/info/rfc4221>. [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 5226, DOI 10.17487/RFC5226, May 2008, <http://www.rfc-editor.org/info/rfc5226>. [RFC5654] Niven-Jenkins, B., Ed., Brungard, D., Ed., Betts, M., Ed., Sprecher, N., and S. Ueno, "Requirements of an MPLS Transport Profile", RFC 5654, DOI 10.17487/RFC5654, September 2009, <http://www.rfc-editor.org/info/rfc5654>. [RFC5860] Vigoureux, M., Ed., Ward, D., Ed., and M. Betts, Ed., "Requirements for Operations, Administration, and Maintenance (OAM) in MPLS Transport Networks", RFC 5860, DOI 10.17487/RFC5860, May 2010, <http://www.rfc-editor.org/info/rfc5860>. [RFC6370] Bocci, M., Swallow, G., and E. Gray, "MPLS Transport Profile (MPLS-TP) Identifiers", RFC 6370, DOI 10.17487/RFC6370, September 2011, <http://www.rfc-editor.org/info/rfc6370>. [RFC6371] Busi, I., Ed., and D. Allan, Ed., "Operations, Administration, and Maintenance Framework for MPLS-Based Transport Networks", RFC 6371, DOI 10.17487/RFC6371, September 2011, <http://www.rfc-editor.org/info/rfc6371>. [RFC6639] King, D., Ed., and M. Venkatesan, Ed., "Multiprotocol Label Switching Transport Profile (MPLS-TP) MIB-Based Management Overview", RFC 6639, DOI 10.17487/RFC6639, June 2012, <http://www.rfc-editor.org/info/rfc6639>. [RFC6923] Winter, R., Gray, E., van Helvoort, H., and M. Betts, "MPLS Transport Profile (MPLS-TP) Identifiers Following ITU-T Conventions", RFC 6923, DOI 10.17487/RFC6923, May 2013, <http://www.rfc-editor.org/info/rfc6923>.
Acknowledgments
-
We wish to thank Muly Ilan, Adrian Farrel, Joan Cucchiara, Weiying Cheng, Mach Chen, Peter Yee, and Tina TSOU for their valuable comments on this document.
The coauthors of this document, the working group chairs, the document shepherd, the responsible AD, and the MPLS Working Group wish to dedicate this RFC to the memory of our friend and colleague Ping Pan, in recognition for his devotion and hard work at the IETF.
Authors' Addresses
-
Ping Pan
InfineraSam Aldrin Google, Inc. 1600 Amphitheatre Parkway Mountain View, CA 94043 United States Email: [email protected] Venkatesan Mahalingam Dell, Inc. 5450 Great America Parkway Santa Clara, CA 95054 United States Email: [email protected]
Kannan KV Sampath
Redeem
IndiaEmail:
[email protected]
Thomas D. Nadeau
BrocadeEmail:
[email protected] Sami Boutros VMware, Inc. 3401 Hillview Ave. Palo Alto, CA 94304 United States
Email:
[email protected]