|
Network Working Group Request for Comment: 4802 Category: Standards Track |
T. Nadeau, Ed. Cisco Systems, Inc. A. Farrel, Ed. Old Dog Consulting February 2007 |
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Copyright © The IETF Trust (2007).
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 Generalized Multiprotocol Label Switching (GMPLS)-based traffic engineering.
1. Introduction
1.1. Migration Strategy
2. Terminology
3. The Internet-Standard Management Framework
4. Outline
4.1. Summary of GMPLS Traffic Engineering MIB Module
5. Brief Description of GMPLS TE MIB Objects
5.1. gmplsTunnelTable
5.2. gmplsTunnelHopTable
5.3. gmplsTunnelARHopTable
5.4. gmplsTunnelCHopTable
5.5. gmplsTunnelErrorTable
5.6. gmplsTunnelReversePerfTable
5.7. Use of 32-bit and 64-bit Counters
6. Cross-referencing to the gmplsLabelTable
7. Example of GMPLS Tunnel Setup
8. GMPLS Traffic Engineering MIB Module
9. Security Considerations
10. Acknowledgments
11. IANA Considerations
11.1. IANA Considerations for GMPLS-TE-STD-MIB
11.2. Dependence on IANA MIB Modules
11.2.1. IANA-GMPLS-TC-MIB Definition
12. References
12.1. Normative References
12.2. Informative References
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 Generalized Multiprotocol Label Switching (GMPLS) [RFC3945] based traffic engineering (TE). The tables and objects defined in this document extend those defined in the equivalent document for MPLS traffic engineering [RFC3812], and management of GMPLS traffic engineering is built on management of MPLS traffic engineering.
The MIB modules in this document should be used in conjunction with the companion document [RFC4803] for GMPLS-based traffic engineering configuration and management.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14, [RFC2119].
MPLS-TE Label Switched paths (LSPs) may be modeled and managed using the MPLS-TE-STD-MIB module [RFC3812].
Label Switching Routers (LSRs) may be migrated to model and manage their TE LSPs using the MIB modules in this document in order to migrate the LSRs to GMPLS support, or to take advantage of additional MIB objects defined in these MIB modules that are applicable to MPLS-TE.
The GMPLS TE MIB module (GMPLS-TE-STD-MIB) defined in this document extends the MPLS-TE-STD-MIB module [RFC3812] through a series of augmentations and sparse augmentations of the MIB tables. The only additions are for support of GMPLS or to support the increased complexity of MPLS and GMPLS systems.
In order to migrate from MPLS-TE-STD-MIB support to GMPLS-TE-STD-MIB support, an implementation needs only to add support for the additional tables and objects defined in GMPLS-TE-STD-MIB. The gmplsTunnelLSPEncoding may be set to tunnelLspNotGmpls to allow an MPLS-TE LSP tunnel to benefit from the additional objects and tables of GMPLS-LSR-STD-MIB without supporting the GMPLS protocols.
The companion document for modeling and managing GMPLS-based LSRs [RFC4803] extends the MPLS-LSR-STD-MIB module [RFC3813] with the same intentions.
Textual conventions are defined in [RFC3811] and the IANA-GMPLS-TC- MIB module.
This document uses terminology from the MPLS architecture document [RFC3031], from the GMPLS architecture document [RFC3945], and from the MPLS Traffic Engineering MIB [RFC3812]. Some frequently used terms are described next.
An explicitly routed LSP (ERLSP) is referred to as a GMPLS tunnel. It consists of in-segment(s) and/or out-segment(s) at the egress/ingress LSRs, each segment being associated with one GMPLS- enabled interface. These are also referred to as tunnel segments.
Additionally, at an intermediate LSR, we model a connection as consisting of one or more in-segments and/or one or more out- segments. The binding or interconnection between in-segments and out-segments is performed using a cross-connect.
These segment and cross-connect objects are defined in the MPLS Label Switching Router MIB (MPLS-LSR-STD-MIB) [RFC3813], but see also the GMPLS Label Switching Router MIB (GMPLS-LSR-STD-MIB) [RFC4803] for the GMPLS-specific extensions to these objects.
For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [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].
Support for GMPLS traffic-engineered tunnels requires the following configuration.
- Setting up tunnels with appropriate MPLS configuration parameters
using [RFC3812].
- Extending the tunnel definitions with GMPLS configuration
parameters.
- Configuring loose and strict source routed tunnel hops.
These actions may need to be accompanied with corresponding actions
using [RFC3813] and [RFC4803] to establish and configure tunnel
segments, if this is done manually. Also, the in-segment and out-
segment performance tables, mplsInSegmentPerfTable and
mplsOutSegmentPerfTable [RFC3813], should be used to determine
performance of the tunnels and tunnel segments, although it should be
noted that those tables may not be appropriate for measuring
performance on some types of GMPLS links.
The following tables contain MIB objects for performing the actions listed above when they cannot be performed solely using MIB objects defined in MPLS-TE-STD-MIB [RFC3812].
- Tunnel table (gmplsTunnelTable) for providing GMPLS-specific
tunnel configuration parameters.
- Tunnel hop, actual tunnel hop, and computed tunnel hop tables
(gmplsTunnelHopTable, gmplsTunnelARHopTable, and
gmplsTunnelCHopTable) for providing additional configuration of
strict and loose source routed tunnel hops.
- Performance and error reporting tables
(gmplsTunnelReversePerfTable and gmplsTunnelErrorTable).
These tables are described in the subsequent sections.
Additionally, the GMPLS-TE-STD-MIB module contains a new
notification.
- The GMPLS Tunnel Down Notification (gmplsTunnelDown) should be
used for all GMPLS tunnels in place of the mplsTunnelDown
notification defined in [RFC3812]. An implementation must not
issue both the gmplsTunnelDown and the mplsTunnelDown
notifications for the same event. As well as indicating that a
tunnel has transitioned to operational down state, this new
notification indicates the cause of the failure.
The objects described in this section support the functionality described in [RFC3473] and [RFC3472] for GMPLS tunnels. The tables support both manually configured and signaled tunnels.
The gmplsTunnelTable extends the MPLS traffic engineering MIB module (MPLS-TE-STD-MIB [RFC3812]) to allow GMPLS tunnels to be created between an LSR and a remote endpoint, and existing GMPLS tunnels to be reconfigured or removed.
Note that we only support point-to-point tunnel segments, although multipoint-to-point and point-to-multipoint connections are supported by an LSR acting as a cross-connect.
Each tunnel can thus have one out-segment originating at an LSR and/or one in-segment terminating at that LSR.
Three objects within this table utilize enumerations in order to map to enumerations that are used in GMPLS signaling. In order to protect the GMPLS-TE-STD-MIB module from changes (in particular, extensions) to the range of enumerations supported by the signaling
protocols, these MIB objects use textual conventions with values maintained by IANA. For further details, see the IANA Considerations section of this document.
The gmplsTunnelHopTable is used to indicate additional parameters for the hops, strict or loose, of a GMPLS tunnel defined in the gmplsTunnelTable, when it is established using signaling. Multiple tunnels may share hops by pointing to the same entry in this table.
The gmplsTunnelARHopTable is used to indicate the actual hops traversed by a tunnel as reported by the signaling protocol after the tunnel is set up. The support of this table is optional since not all GMPLS signaling protocols support this feature.
The gmplsTunnelCHopTable lists the actual hops computed by a constraint-based routing algorithm based on the gmplsTunnelHopTable. The support of this table is optional since not all implementations support computation of hop lists using a constraint-based routing protocol.
The gmplsTunnelErrorTable provides access to information about the last error that occurred on each tunnel known about by the MIB. It indicates the nature of the error and when and how it was reported, and it can give recovery advice through an admin string.
The gmplsTunnelReversePerfTable provides additional counters to
measure the performance of bidirectional GMPLS tunnels in which
packets are visible. It supplements the counters in
mplsTunnelPerfTable and augments gmplsTunnelTable.
Note that not all counters may be appropriate or available for some types of tunnel.
64-bit counters are provided in the GMPLS-TE-STD-MIB module for high-speed interfaces where the use of 32-bit counters might be impractical. The requirements on the use of 32-bit and 64-bit counters (copied verbatim from [RFC2863]) are as follows:
For interfaces that operate at 20,000,000 (20 million) bits per second or less, 32-bit byte and packet counters MUST be supported. For interfaces that operate faster than 20,000,000 bits/second, and slower than 650,000,000 bits/second, 32-bit packet counters MUST be supported and 64-bit octet counters MUST be supported. For interfaces that operate at 650,000,000 bits/second or faster, 64-bit packet counters AND 64-bit octet counters MUST be supported.
The gmplsLabelTable is found in the GMPLS-LABEL-STD-MIB module in [RFC4803] and provides a way to model labels in a GMPLS system where labels might not be simple 32-bit integers.
The hop tables in this document (gmplsTunnelHopTable,
gmplsTunnelCHopTable, and gmplsTunnelARHopTable) and the segment
tables in [RFC3813] (mplsInSegmentTable and mplsOutSegmentTable)
contain objects with syntax MplsLabel.
MplsLabel (defined in [RFC3811]) is a 32-bit integer that is capable of representing any MPLS Label and most GMPLS Labels. However, some GMPLS Labels are larger than 32 bits and may be of arbitrary length. Furthermore, some labels that may be safely encoded in 32 bits are constructed from multiple sub-fields. Additionally, some GMPLS technologies support the concatenation of individual labels to represent a data flow carried as multiple sub-flows.
These GMPLS cases require that something other than a simple 32-bit integer be made available to represent the labels. This is achieved through the gmplsLabelTable contained in the GMPLS-LABEL-STD-MIB [RFC4803].
The tables in this document and [RFC3813] that include objects with syntax MplsLabel also include companion objects that are row pointers. If the row pointer is set to zeroDotZero (0.0), then an object of syntax MplsLabel contains the label encoded as a 32-bit integer. But otherwise the row pointer indicates a row in another MIB table that includes the label. In these cases, the row pointer may indicate a row in the gmplsLabelTable.
This provides both a good way to support legacy systems that implement MPLS-TE-STD-MIB [RFC3812], and a significant simplification in GMPLS systems that are limited to a single, simple label type.
Note that gmplsLabelTable supports concatenated labels through the use of a label sub-index (gmplsLabelSubindex).
This section contains an example of which MIB objects should be modified to create a GMPLS tunnel. This example shows a best effort, loosely routed, bidirectional traffic engineered tunnel, which spans two hops of a simple network, uses Generalized Label requests with Lambda encoding, has label recording and shared link layer protection. Note that these objects should be created on the "head- end" LSR.
First in the mplsTunnelTable:
{
mplsTunnelIndex = 1,
mplsTunnelInstance = 1,
mplsTunnelIngressLSRId = 192.0.2.1,
mplsTunnelEgressLSRId = 192.0.2.2,
mplsTunnelName = "My first tunnel",
mplsTunnelDescr = "Here to there and back again",
mplsTunnelIsIf = true(1),
mplsTunnelXCPointer = mplsXCIndex.3.0.0.12,
mplsTunnelSignallingProto = none(1),
mplsTunnelSetupPrio = 0,
mplsTunnelHoldingPrio = 0,
mplsTunnelSessionAttributes = recordRoute(4),
mplsTunnelOwner = snmp(2),
mplsTunnelLocalProtectInUse = false(2),
mplsTunnelResourcePointer = mplsTunnelResourceIndex.6,
mplsTunnelInstancePriority = 1,
mplsTunnelHopTableIndex = 1,
mplsTunnelPrimaryInstance = 0,
mplsTunnelIncludeAnyAffinity = 0,
mplsTunnelIncludeAllAffinity = 0,
mplsTunnelExcludeAnyAffinity = 0,
mplsTunnelPathInUse = 1,
mplsTunnelRole = head(1),
mplsTunnelRowStatus = createAndWait(5),
}
In gmplsTunnelTable(1,1,192.0.2.1,192.0.2.2):
{
gmplsTunnelUnnumIf = true(1),
gmplsTunnelAttributes = labelRecordingRequired(1),
gmplsTunnelLSPEncoding = tunnelLspLambda,
gmplsTunnelSwitchingType = lsc,
gmplsTunnelLinkProtection = shared(2),
gmplsTunnelGPid = lambda,
gmplsTunnelSecondary = false(2),
gmplsTunnelDirection = bidirectional(1)
gmplsTunnelPathComp = explicit(2),
gmplsTunnelSendPathNotifyRecipientType = ipv4(1),
gmplsTunnelSendPathNotifyRecipient = 'C0000201'H,
gmplsTunnelAdminStatusFlags = 0,
gmplsTunnelExtraParamsPtr = 0.0
}
Entries in the mplsTunnelResourceTable, mplsTunnelHopTable, and gmplsTunnelHopTable are created and activated at this time.
In mplsTunnelResourceTable:
{
mplsTunnelResourceIndex = 6,
mplsTunnelResourceMaxRate = 0,
mplsTunnelResourceMeanRate = 0,
mplsTunnelResourceMaxBurstSize = 0,
mplsTunnelResourceRowStatus = createAndGo(4)
}
The next two instances of mplsTunnelHopEntry are used to denote the hops this tunnel will take across the network.
The following denotes the beginning of the network, or the first hop in our example. We have used the fictitious LSR identified by "192.0.2.1" as our head-end router.
In mplsTunnelHopTable:
{
mplsTunnelHopListIndex = 1,
mplsTunnelPathOptionIndex = 1,
mplsTunnelHopIndex = 1,
mplsTunnelHopAddrType = ipv4(1),
mplsTunnelHopIpv4Addr = 192.0.2.1,
mplsTunnelHopIpv4PrefixLen = 9,
mplsTunnelHopType = strict(1),
mplsTunnelHopRowStatus = createAndWait(5),
}
The following denotes the end of the network, or the last hop in our example. We have used the fictitious LSR identified by "192.0.2.2" as our tail-end router.
In mplsTunnelHopTable:
{
mplsTunnelHopListIndex = 1,
mplsTunnelPathOptionIndex = 1,
mplsTunnelHopIndex = 2,
mplsTunnelHopAddrType = ipv4(1),
mplsTunnelHopIpv4Addr = 192.0.2.2,
mplsTunnelHopIpv4PrefixLen = 9,
mplsTunnelHopType = loose(2),
mplsTunnelHopRowStatus = createAndGo(4)
}
Now an associated entry in the gmplsTunnelHopTable is created to provide additional GMPLS hop configuration indicating that the first hop is an unnumbered link using Explicit Forward and Reverse Labels.
An entry in the gmplsLabelTable is created first to include the Explicit Label.
In gmplsLabelTable:
{
gmplsLabelInterface = 2,
gmplsLabelIndex = 1,
gmplsLabelSubindex = 0,
gmplsLabelType = gmplsFreeformLabel(3),
gmplsLabelFreeform = 0xFEDCBA9876543210
gmplsLabelRowStatus = createAndGo(4)
}
In gmplsTunnelHopTable(1,1,1):
{
gmplsTunnelHopLabelStatuses = forwardPresent(0)
+reversePresent(1),
gmplsTunnelHopExplicitForwardLabelPtr = gmplsLabelTable(2,1,0)
gmplsTunnelHopExplicitReverseLabelPtr = gmplsLabelTable(2,1,0)
}
The first hop is now activated:
In mplsTunnelHopTable(1,1,1):
{
mplsTunnelHopRowStatus = active(1)
}
No gmplsTunnelHopEntry is created for the second hop as it contains no special GMPLS features.
Finally, the mplsTunnelEntry is activated:
In mplsTunnelTable(1,1,192.0.2.1,192.0.2.2)
{
mplsTunnelRowStatus = active(1)
}
This MIB module makes reference to the following documents: [RFC2205], [RFC2578], [RFC2579], [RFC2580], [RFC3209], [RFC3411], [RFC3471], [RFC3473], [RFC3477], [RFC3812], [RFC4001], and [RFC4202].
GMPLS-TE-STD-MIB DEFINITIONS ::= BEGIN
FROM SNMPv2-SMI -- RFC 2578
MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
FROM SNMPv2-CONF -- RFC 2580
TruthValue, TimeStamp, RowPointer
FROM SNMPv2-TC -- RFC 2579
InetAddress, InetAddressType
FROM INET-ADDRESS-MIB -- RFC 4001
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB -- RFC 3411
mplsTunnelIndex, mplsTunnelInstance, mplsTunnelIngressLSRId,
mplsTunnelEgressLSRId, mplsTunnelHopListIndex,
mplsTunnelHopPathOptionIndex, mplsTunnelHopIndex,
mplsTunnelARHopListIndex, mplsTunnelARHopIndex,
mplsTunnelCHopListIndex, mplsTunnelCHopIndex,
mplsTunnelEntry,
mplsTunnelAdminStatus, mplsTunnelOperStatus,
mplsTunnelGroup, mplsTunnelScalarGroup
FROM MPLS-TE-STD-MIB -- RFC3812
IANAGmplsLSPEncodingTypeTC, IANAGmplsSwitchingTypeTC,
IANAGmplsGeneralizedPidTC, IANAGmplsAdminStatusInformationTC
FROM IANA-GMPLS-TC-MIB
mplsStdMIB
FROM MPLS-TC-STD-MIB -- RFC 3811
;
" Thomas D. Nadeau
Cisco Systems, Inc.
Email: tnadeau@cisco.com
Adrian Farrel
Old Dog Consulting
Email: adrian@olddog.co.uk
Comments about this document should be emailed directly
to the CCAMP working group mailing list at
ccamp@ops.ietf.org."
DESCRIPTION
"Copyright © The IETF Trust (2007). This version of
this MIB module is part of RFC 4802; see the RFC itself for
full legal notices.
This MIB module contains managed object definitions
for GMPLS Traffic Engineering (TE) as defined in:
::= { mplsStdMIB 13 }
gmplsTeNotifications OBJECT IDENTIFIER ::= { gmplsTeStdMIB 0 }
gmplsTeScalars OBJECT IDENTIFIER ::= { gmplsTeStdMIB 1 }
gmplsTeObjects OBJECT IDENTIFIER ::= { gmplsTeStdMIB 2 }
gmplsTeConformance OBJECT IDENTIFIER ::= { gmplsTeStdMIB 3 }
tunnel is considered configured if an entry for the tunnel
exists in the gmplsTunnelTable and the associated
mplsTunnelRowStatus is active(1)."
::= { gmplsTeScalars 1 }
::= { gmplsTeScalars 2 }
Note that only point-to-point tunnel segments are supported,
although multipoint-to-point and point-to-multipoint
connections are supported by an LSR acting as a cross-connect.
Each tunnel can thus have one out-segment originating at this
LSR and/or one in-segment terminating at this LSR.
The row status of an entry in this table is controlled by the
mplsTunnelRowStatus in the corresponding entry in the
mplsTunnelTable. When the corresponding mplsTunnelRowStatus has
value active(1), a row in this table may not be created or
modified.
The exception to this rule is the
gmplsTunnelAdminStatusInformation object, which can be modified
while the tunnel is active."
REFERENCE
"1. Multiprotocol Label Switching (MPLS) Traffic Engineering (TE)
Management Information Base (MIB), RFC 3812."
::= { gmplsTeObjects 1 }
An entry can be created by a network administrator via SNMP SET commands, or in response to signaling protocol events."
INDEX {
mplsTunnelIndex,
mplsTunnelInstance,
mplsTunnelIngressLSRId,
mplsTunnelEgressLSRId
}
::= { gmplsTunnelTable 1 }
GmplsTunnelEntry ::= SEQUENCE {
gmplsTunnelUnnumIf TruthValue,
gmplsTunnelAttributes BITS,
gmplsTunnelLSPEncoding IANAGmplsLSPEncodingTypeTC,
gmplsTunnelSwitchingType IANAGmplsSwitchingTypeTC,
gmplsTunnelLinkProtection BITS,
gmplsTunnelGPid IANAGmplsGeneralizedPidTC,
gmplsTunnelSecondary TruthValue,
gmplsTunnelDirection INTEGER,
gmplsTunnelPathComp INTEGER,
gmplsTunnelUpstreamNotifyRecipientType InetAddressType,
gmplsTunnelUpstreamNotifyRecipient InetAddress,
gmplsTunnelSendResvNotifyRecipientType InetAddressType,
gmplsTunnelSendResvNotifyRecipient InetAddress,
gmplsTunnelDownstreamNotifyRecipientType InetAddressType,
gmplsTunnelDownstreamNotifyRecipient InetAddress,
gmplsTunnelSendPathNotifyRecipientType InetAddressType,
gmplsTunnelSendPathNotifyRecipient InetAddress,
gmplsTunnelAdminStatusFlags IANAGmplsAdminStatusInformationTC,
gmplsTunnelExtraParamsPtr RowPointer
}
This object is only used if mplsTunnelIsIf is set to 'true'.
If both this object and the mplsTunnelIsIf object are set to 'true', the originating LSR adds an LSP_TUNNEL_INTERFACE_ID object to the outgoing Path message.
This object contains information that is only used by the
terminating LSR."
REFERENCE
"1. Signalling Unnumbered Links in RSVP-TE, RFC 3477."
DEFVAL { false }
::= { gmplsTunnelEntry 1 }
SYNTAX BITS {
labelRecordingDesired(0)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This bitmask indicates optional parameters for this tunnel.
These bits should be taken in addition to those defined in
mplsTunnelSessionAttributes in order to determine the full set
of options to be signaled (for example SESSION_ATTRIBUTES flags
in RSVP-TE). The following describes these bitfields:
labelRecordingDesired
This flag is set to indicate that label information should be
included when doing a route record. This bit is not valid
unless the recordRoute bit is set."
REFERENCE
"1. RSVP-TE: Extensions to RSVP for LSP Tunnels, RFC 3209,
sections 4.4.3, 4.7.1, and 4.7.2."
DEFVAL { { } }
::= { gmplsTunnelEntry 2 }
A value of 'tunnelLspNotGmpls' indicates that GMPLS signaling is not in use. Some objects in this MIB module may be of use for MPLS signaling extensions that do not use GMPLS signaling. By setting this object to 'tunnelLspNotGmpls', an application may
indicate that only those objects meaningful in MPLS should be examined.
The values to use are defined in the TEXTUAL-CONVENTION
IANAGmplsLSPEncodingTypeTC found in the IANA-GMPLS-TC-MIB
module."
DEFVAL { tunnelLspNotGmpls }
::= { gmplsTunnelEntry 3 }
The values to use are defined in the TEXTUAL-CONVENTION IANAGmplsSwitchingTypeTC found in the IANA-GMPLS-TC-MIB module.
This object is only meaningful if gmplsTunnelLSPEncodingType
is not set to 'tunnelLspNotGmpls'."
DEFVAL { unknown }
::= { gmplsTunnelEntry 4 }
SYNTAX BITS {
extraTraffic(0),
unprotected(1),
shared(2),
dedicatedOneToOne(3),
dedicatedOnePlusOne(4),
enhanced(5)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This bitmask indicates the level of link protection required. A
value of zero (no bits set) indicates that any protection may be
used. The following describes these bitfields:
extraTraffic
This flag is set to indicate that the LSP should use links
that are protecting other (primary) traffic. Such LSPs may be
preempted when the links carrying the (primary) traffic being
protected fail.
unprotected
This flag is set to indicate that the LSP should not use any
link layer protection.
shared
This flag is set to indicate that a shared link layer
protection scheme, such as 1:N protection, should be used to
support the LSP.
dedicatedOneToOne
This flag is set to indicate that a dedicated link layer
protection scheme, i.e., 1:1 protection, should be used to
support the LSP.
dedicatedOnePlusOne
This flag is set to indicate that a dedicated link layer
protection scheme, i.e., 1+1 protection, should be used to
support the LSP.
enhanced
This flag is set to indicate that a protection scheme that is
more reliable than Dedicated 1+1 should be used, e.g., 4 fiber
BLSR/MS-SPRING.
This object is only meaningful if gmplsTunnelLSPEncoding is
not set to 'tunnelLspNotGmpls'."
REFERENCE
"1. Generalized Multi-Protocol Label Switching (GMPLS) Signaling
Functional Description, RFC 3471, section 7.1."
DEFVAL { { } }
::= { gmplsTunnelEntry 5 }
The values to use are defined in the TEXTUAL-CONVENTION IANAGmplsGeneralizedPidTC found in the IANA-GMPLS-TC-MIB module.
This object is only meaningful if gmplsTunnelLSPEncoding is not
set to 'tunnelLspNotGmpls'."
DEFVAL { unknown }
::= { gmplsTunnelEntry 6 }
This object is only meaningful if gmplsTunnelLSPEncoding is not
set to 'tunnelLspNotGmpls'."
REFERENCE
"1. Generalized Multi-Protocol Label Switching (GMPLS) Signaling
Functional Description, RFC 3471, section 7.1."
DEFVAL { false }
::= { gmplsTunnelEntry 7 }
SYNTAX INTEGER {
forward(0),
bidirectional(1)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Whether this tunnel carries forward data only (is
unidirectional) or is bidirectional.
Values of this object other than 'forward' are meaningful
only if gmplsTunnelLSPEncoding is not set to
'tunnelLspNotGmpls'."
DEFVAL { forward }
::= { gmplsTunnelEntry 8 }
SYNTAX INTEGER {
dynamicFull(1), -- CSPF fully computed
explicit(2), -- fully specified path
dynamicPartial(3) -- CSPF partially computed
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This value instructs the source node on how to perform path
computation on the explicit route specified by the associated
entries in the gmplsTunnelHopTable.
dynamicFull
The user specifies at least the source and
destination of the path and expects that the Constrained
Shortest Path First (CSPF) will calculate the remainder of the path.
explicit
The user specifies the entire path for the tunnel to
take. This path may contain strict or loose hops.
Evaluation of the explicit route will be performed
hop by hop through the network.
dynamicPartial
The user specifies at least the source and
destination of the path and expects that the CSPF
will calculate the remainder of the path. The path
computed by CSPF is allowed to be only partially
computed allowing the remainder of the path to be
filled in across the network.
When an entry is present in the gmplsTunnelTable for a
tunnel, gmplsTunnelPathComp MUST be used and any
corresponding mplsTunnelHopEntryPathComp object in the
mplsTunnelHopTable MUST be ignored and SHOULD not be set.
mplsTunnelHopTable and mplsTunnelHopEntryPathComp are part of MPLS-TE-STD-MIB.
This object should be ignored if the value of
gmplsTunnelLSPEncoding is 'tunnelLspNotGmpls'."
REFERENCE
"1. Multiprotocol Label Switching (MPLS) Traffic Engineering (TE)
Management Information Base (MIB), RFC 3812."
DEFVAL { dynamicFull }
::= { gmplsTunnelEntry 9 }
::= { gmplsTunnelEntry 10 }
"Indicates the address of the upstream recipient for Notify messages relating to this tunnel and issued by this LSR. This information is typically received from an upstream LSR in a Path message.
This object is only valid when signaling a tunnel using RSVP.
It is also not valid at the head end of a tunnel since there are no upstream LSRs to which to send a Notify message.
This object is interpreted in the context of the value of
gmplsTunnelUpstreamNotifyRecipientType. If this object is set to
0, the value of gmplsTunnelUpstreamNotifyRecipientType MUST be
set to unknown(0)."
REFERENCE
"1. Generalized MPLS Signaling - RSVP-TE Extensions, RFC 3473,
section 4.2. "
DEFVAL { '00000000'H } -- 0.0.0.0
::= { gmplsTunnelEntry 11 }
::= { gmplsTunnelEntry 12 }
This object is only valid when signaling a tunnel using RSVP.
It is also not valid at the head end of the tunnel since no Resv messages are sent from that LSR for this tunnel.
If set to 0, no Notify Request object will be included in the outgoing Resv messages.
This object is interpreted in the context of the value of gmplsTunnelSendResvNotifyRecipientType. If this object is set to
0, the value of gmplsTunnelSendResvNotifyRecipientType MUST be
set to unknown(0)."
REFERENCE
"1. Generalized MPLS Signaling - RSVP-TE Extensions, RFC 3473,
section 4.2. "
DEFVAL { '00000000'H } -- 0.0.0.0
::= { gmplsTunnelEntry 13 }
::= { gmplsTunnelEntry 14 }
It is also not valid at the tail end of a tunnel since there are no downstream LSRs to which to send a Notify message.
This object is interpreted in the context of the value of
gmplsTunnelDownstreamNotifyRecipientType. If this object is set
to 0, the value of gmplsTunnelDownstreamNotifyRecipientType MUST
be set to unknown(0)."
REFERENCE
"1. Generalized MPLS Signaling - RSVP-TE Extensions, RFC 3473,
section 4.2.
"
DEFVAL { '00000000'H } -- 0.0.0.0
::= { gmplsTunnelEntry 15 }
"This object is used to aid in interpretation of
gmplsTunnelSendPathNotifyRecipient."
DEFVAL { unknown }
::= { gmplsTunnelEntry 16 }
This object is only valid when signaling a tunnel using RSVP.
It is also not valid at the tail end of the tunnel since no Path messages are sent from that LSR for this tunnel.
If set to 0, no Notify Request object will be included in the outgoing Path messages.
This object is interpreted in the context of the value of
gmplsTunnelSendPathNotifyRecipientType. If this object is set to
0, the value of gmplsTunnelSendPathNotifyRecipientType MUST be
set to unknown(0)."
REFERENCE
"1. Generalized MPLS Signaling - RSVP-TE Extensions, RFC 3473,
section 4.2. "
DEFVAL { '00000000'H } -- 0.0.0.0
::= { gmplsTunnelEntry 17 }
SYNTAX IANAGmplsAdminStatusInformationTC
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Determines the setting of the Admin Status flags in the
Admin Status object or TLV, as described in RFC 3471. Setting
this field to a non-zero value will result in the inclusion of
the Admin Status object on signaling messages.
The values to use are defined in the TEXTUAL-CONVENTION
IANAGmplsAdminStatusInformationTC found in the
IANA-GMPLS-TC-MIB module.
This value of this object can be modified when the
corresponding mplsTunnelRowStatus and mplsTunnelAdminStatus
is active(1). By doing so, a new signaling message will be
triggered including the requested Admin Status object or
TLV."
REFERENCE
"1. Generalized Multi-Protocol Label Switching (GMPLS) Signaling
Functional Description, RFC 3471, section 8."
DEFVAL { { } }
::= { gmplsTunnelEntry 18 }
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Some tunnels will run over transports that can usefully support
technology-specific additional parameters (for example,
Synchronous Optical Network (SONET) resource usage). Such
parameters can be supplied in an external table and referenced
from here.
A value of zeroDotzero in this attribute indicates that there
is no such additional information."
DEFVAL { zeroDotZero }
::= { gmplsTunnelEntry 19 }
Each row in this table is indexed by the same indexes as in the mplsTunnelHopTable. It is acceptable for some rows in the mplsTunnelHopTable to have corresponding entries in this table and some to have no corresponding entry in this table.
The storage type for this entry is given by the value
of mplsTunnelHopStorageType in the corresponding entry in the
mplsTunnelHopTable.
The row status of an entry in this table is controlled by mplsTunnelHopRowStatus in the corresponding entry in the mplsTunnelHopTable. That is, it is not permitted to create a row
in this table, or to modify an existing row, when the
corresponding mplsTunnelHopRowStatus has the value active(1)."
REFERENCE
"1. Multiprotocol Label Switching (MPLS) Traffic Engineering (TE)
Management Information Base (MIB), RFC 3812.
::= { gmplsTeObjects 2 }
INDEX {
mplsTunnelHopListIndex,
mplsTunnelHopPathOptionIndex,
mplsTunnelHopIndex
}
::= { gmplsTunnelHopTable 1 }
GmplsTunnelHopEntry ::= SEQUENCE {
gmplsTunnelHopLabelStatuses BITS,
gmplsTunnelHopExplicitForwardLabel Unsigned32,
gmplsTunnelHopExplicitForwardLabelPtr RowPointer,
gmplsTunnelHopExplicitReverseLabel Unsigned32,
gmplsTunnelHopExplicitReverseLabelPtr RowPointer
}
SYNTAX BITS {
forwardPresent(0),
reversePresent(1)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This bitmask indicates the presence of labels indicated by the
gmplsTunnelHopExplicitForwardLabel or
gmplsTunnelHopExplicitForwardLabelPtr, and
gmplsTunnelHopExplicitReverseLabel or
gmplsTunnelHopExplicitReverseLabelPtr objects.
For the Present bits, a set bit indicates that a label is
present for this hop in the route. This allows zero to be a
valid label value."
DEFVAL { { } }
::= { gmplsTunnelHopEntry 1 }
::= { gmplsTunnelHopEntry 2 }
If the gmplsTunnelHopLabelStatuses object indicates that a
Forward Label is present and this object contains the value
zeroDotZero, then the label to use on this hop is found in the
gmplsTunnelHopExplicitForwardLabel object."
DEFVAL { zeroDotZero }
::= { gmplsTunnelHopEntry 3 }
::= { gmplsTunnelHopEntry 4 }
If the gmplsTunnelHopLabelStatuses object indicates that a
Reverse Label is present and this object contains the value
zeroDotZero, then the label to use on this hop is found in the
gmplsTunnelHopExplicitReverseLabel object."
DEFVAL { zeroDotZero }
::= { gmplsTunnelHopEntry 5 }
Each row in this table is indexed by the same indexes as in the mplsTunnelARHopTable. It is acceptable for some rows in the mplsTunnelARHopTable to have corresponding entries in this table and some to have no corresponding entry in this table.
Note that since the information necessary to build entries
within this table is not provided by some signaling protocols
and might not be returned in all cases of other signaling
protocols, implementation of this table and the
mplsTunnelARHopTable is optional. Furthermore, since the
information in this table is actually provided by the
signaling protocol after the path has been set up, the entries
in this table are provided only for observation, and hence,
all variables in this table are accessible exclusively as
read-only."
REFERENCE
"1. Extensions to RSVP for LSP Tunnels, RFC 3209.
::= { gmplsTeObjects 3 }
At any node on the LSP (ingress, transit, or egress), this table and the mplsTunnelARHopTable (if the tables are supported and if the signaling protocol is recording actual route information) contain the actual route of the whole tunnel. If the signaling protocol is not recording the actual route, this table MAY report the information from the gmplsTunnelHopTable or the gmplsTunnelCHopTable.
Note that the recording of actual labels is distinct from the recording of the actual route in some signaling protocols. This feature is enabled using the gmplsTunnelAttributes object."
INDEX {
mplsTunnelARHopListIndex,
mplsTunnelARHopIndex
}
::= { gmplsTunnelARHopTable 1 }
GmplsTunnelARHopEntry ::= SEQUENCE {
gmplsTunnelARHopLabelStatuses BITS,
gmplsTunnelARHopExplicitForwardLabel Unsigned32,
gmplsTunnelARHopExplicitForwardLabelPtr RowPointer,
gmplsTunnelARHopExplicitReverseLabel Unsigned32,
gmplsTunnelARHopExplicitReverseLabelPtr RowPointer,
gmplsTunnelARHopProtection BITS
}
SYNTAX BITS {
forwardPresent(0),
reversePresent(1),
forwardGlobal(2),
reverseGlobal(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This bitmask indicates the presence and status of labels
indicated by the gmplsTunnelARHopExplicitForwardLabel or
gmplsTunnelARHopExplicitForwardLabelPtr, and
gmplsTunnelARHopExplicitReverseLabel or
gmplsTunnelARHopExplicitReverseLabelPtr objects.
For the Present bits, a set bit indicates that a label is present for this hop in the route.
For the Global bits, a set bit indicates that the label comes from the Global Label Space; a clear bit indicates that this is a Per-Interface label. A Global bit only has meaning if the corresponding Present bit is set."
::= { gmplsTunnelARHopEntry 1 }
::= { gmplsTunnelARHopEntry 2 }
If the gmplsTunnelARHopLabelStatuses object indicates that a Forward Label is present and this object contains the value zeroDotZero, then the label in use on this hop is found in the gmplsTunnelARHopExplicitForwardLabel object."
::= { gmplsTunnelARHopEntry 3 }
::= { gmplsTunnelARHopEntry 4 }
If the gmplsTunnelARHopLabelStatuses object indicates that a Reverse Label is present and this object contains the value zeroDotZero, then the label in use on this hop is found in the gmplsTunnelARHopExplicitReverseLabel object."
::= { gmplsTunnelARHopEntry 5 }
SYNTAX BITS {
localAvailable(0),
localInUse(1)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Availability and usage of protection on the reported link.
localAvailable
This flag is set to indicate that the link downstream of this
node is protected via a local repair mechanism.
localInUse
This flag is set to indicate that a local repair mechanism is
in use to maintain this tunnel (usually in the face of an
outage of the link it was previously routed over)."
REFERENCE
"1. RSVP-TE: Extensions to RSVP for LSP Tunnels, RFC 3209, section 4.4.1."
::= { gmplsTunnelARHopEntry 6 }
Each row in this table is indexed by the same indexes as in the mplsTunnelCHopTable. It is acceptable for some rows in the mplsTunnelCHopTable to have corresponding entries in this table and some to have no corresponding entry in this table.
Please note that since the information necessary to build entries within this table may not be supported by some LSRs, implementation of this table is optional.
Furthermore, since the information in this table is actually
provided by a path computation component after the path has been
computed, the entries in this table are provided only for
observation, and hence, all objects in this table are accessible
exclusively as read-only."
REFERENCE
"1. Multiprotocol Label Switching (MPLS) Traffic Engineering (TE)
Management Information Base (MIB), RFC 3812.
::= { gmplsTeObjects 4 }
At a transit LSR, this table (if the table is supported) MAY contain the path computed by a path computation engine on (or on
behalf of) the transit LSR."
INDEX {
mplsTunnelCHopListIndex,
mplsTunnelCHopIndex
}
::= { gmplsTunnelCHopTable 1 }
GmplsTunnelCHopEntry ::= SEQUENCE {
gmplsTunnelCHopLabelStatuses BITS,
gmplsTunnelCHopExplicitForwardLabel Unsigned32,
gmplsTunnelCHopExplicitForwardLabelPtr RowPointer,
gmplsTunnelCHopExplicitReverseLabel Unsigned32,
gmplsTunnelCHopExplicitReverseLabelPtr RowPointer
}
SYNTAX BITS {
forwardPresent(0),
reversePresent(1)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This bitmask indicates the presence of labels indicated by the
gmplsTunnelCHopExplicitForwardLabel or
gmplsTunnelCHopExplicitForwardLabelPtr and
gmplsTunnelCHopExplicitReverseLabel or
gmplsTunnelCHopExplicitReverseLabelPtr objects.
A set bit indicates that a label is present for this hop in the route, thus allowing zero to be a valid label value."
::= { gmplsTunnelCHopEntry 1 }
::= { gmplsTunnelCHopEntry 2 }
STATUS current
DESCRIPTION
"If the gmplsTunnelCHopLabelStatuses object indicates that a
Forward Label is present, this object contains a pointer to a
row in another MIB table (such as the gmplsLabelTable of
GMPLS-LABEL-STD-MIB) that contains the label to use on this hop
in the forward direction.
If the gmplsTunnelCHopLabelStatuses object indicates that a Forward Label is present and this object contains the value zeroDotZero, then the label to use on this hop is found in the gmplsTunnelCHopExplicitForwardLabel object."
::= { gmplsTunnelCHopEntry 3 }
::= { gmplsTunnelCHopEntry 4 }
If the gmplsTunnelCHopLabelStatuses object indicates that a Reverse Label is present and this object contains the value zeroDotZero, then the label to use on this hop is found in the gmplsTunnelCHopExplicitReverseLabel object."
::= { gmplsTunnelCHopEntry 5 }
"This table augments the gmplsTunnelTable to provide
per-tunnel packet performance information for the reverse
direction of a bidirectional tunnel. It can be seen as
supplementing the mplsTunnelPerfTable, which augments the
mplsTunnelTable.
For links that do not transport packets, these packet counters cannot be maintained. For such links, attempts to read the objects in this table will return noSuchInstance.
A tunnel can be known to be bidirectional by inspecting the
gmplsTunnelDirection object."
REFERENCE
"1. Multiprotocol Label Switching (MPLS) Traffic Engineering (TE)
Management Information Base (MIB), RFC 3812."
::= { gmplsTeObjects 5 }
::= { gmplsTunnelReversePerfTable 1 }
GmplsTunnelReversePerfEntry ::= SEQUENCE {
gmplsTunnelReversePerfPackets Counter32,
gmplsTunnelReversePerfHCPackets Counter64,
gmplsTunnelReversePerfErrors Counter32,
gmplsTunnelReversePerfBytes Counter32,
gmplsTunnelReversePerfHCBytes Counter64
}
This object represents the 32-bit value of the least
significant part of the 64-bit value if both
gmplsTunnelReversePerfHCPackets and this object are returned.
For links that do not transport packets, this packet counter cannot be maintained. For such links, this value will return noSuchInstance."
::= { gmplsTunnelReversePerfEntry 1 }
For links that do not transport packets, this packet counter cannot be maintained. For such links, this value will return noSuchInstance."
::= { gmplsTunnelReversePerfEntry 2 }
::= { gmplsTunnelReversePerfEntry 3 }
This object represents the 32-bit value of the least
significant part of the 64-bit value if both
gmplsTunnelReversePerfHCBytes and this object are returned.
For links that do not transport packets, this packet counter cannot be maintained. For such links, this value will return noSuchInstance."
::= { gmplsTunnelReversePerfEntry 4 }
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"High-capacity counter for number of bytes forwarded on the
tunnel in the reverse direction if it is bidirectional.
For links that do not transport packets, this packet counter cannot be maintained. For such links, this value will return noSuchInstance."
::= { gmplsTunnelReversePerfEntry 5 }
This table provides per-tunnel information about errors. Errors may be detected locally or reported through the signaling protocol. Error reporting is not exclusive to GMPLS, and this table may be applied in MPLS systems.
Entries in this table are not persistent over system resets
or re-initializations of the management system."
REFERENCE
"1. Multiprotocol Label Switching (MPLS) Traffic Engineering (TE)
Management Information Base (MIB), RFC 3812."
::= { gmplsTeObjects 6 }
Note that systems that read the objects in this table one at
a time and do not perform atomic operations to read entire
instantiated table rows at once, should, for each conceptual
column with valid data, read gmplsTunnelErrorLastTime
prior to the other objects in the row and again subsequent to
reading the last object of the row. They should verify that
the value of gmplsTunnelErrorLastTime did not change and
thereby ensure that all data read belongs to the same error
event."
AUGMENTS { mplsTunnelEntry }
::= { gmplsTunnelErrorTable 1 }
GmplsTunnelErrorEntry ::= SEQUENCE {
gmplsTunnelErrorLastErrorType INTEGER,
gmplsTunnelErrorLastTime TimeStamp,
gmplsTunnelErrorReporterType InetAddressType,
gmplsTunnelErrorReporter InetAddress,
gmplsTunnelErrorCode Unsigned32,
gmplsTunnelErrorSubcode Unsigned32,
gmplsTunnelErrorTLVs OCTET STRING,
gmplsTunnelErrorHelpString SnmpAdminString
}
SYNTAX INTEGER {
noError(0),
unknown(1),
protocol(2),
pathComputation(3),
localConfiguration(4),
localResources(5),
localOther(6)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The nature of the last error. Provides interpretation context
for gmplsTunnelErrorProtocolCode and
gmplsTunnelErrorProtocolSubcode.
A value of noError(0) shows that there is no error associated with this tunnel and means that the other objects in this table entry (conceptual row) have no meaning.
A value of unknown(1) shows that there is an error but that no additional information about the cause is known. The error may have been received in a signaled message or generated locally.
A value of protocol(2) or pathComputation(3) indicates the cause of an error and identifies an error that has been received through signaling or will itself be signaled.
A value of localConfiguration(4), localResources(5) or
localOther(6) identifies an error that has been detected
by the local node but that will not be reported through
signaling."
::= { gmplsTunnelErrorEntry 1 }
If gmplsTunnelErrorLastErrorType has the value noError(0), then this object is not valid and should be ignored.
Note that entries in this table are not persistent over system resets or re-initializations of the management system."
::= { gmplsTunnelErrorEntry 2 }
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address type of the error reported.
This object is used to aid in interpretation of
gmplsTunnelErrorReporter."
::= { gmplsTunnelErrorEntry 3 }
If gmplsTunnelErrorLastErrorType has the value noError(0), then this object is not valid and should be ignored.
If gmplsTunnelErrorLastErrorType has the value unknown(1), localConfiguration(4), localResources(5), or localOther(6), this object MAY contain a zero value.
This object should be interpreted in the context of the value of
the object gmplsTunnelErrorReporterType."
REFERENCE
"1. Textual Conventions for Internet Network Addresses, RFC 4001,
section 4, Usage Hints."
::= { gmplsTunnelErrorEntry 4 }
The interpretation of this error code depends on the value of
gmplsTunnelErrorLastErrorType. If the value of
gmplsTunnelErrorLastErrorType is noError(0), the value of this
object should be 0 and should be ignored. If the value of
gmplsTunnelErrorLastErrorType is protocol(2), the error should
be interpreted in the context of the signaling protocol
identified by the mplsTunnelSignallingProto object."
REFERENCE
"1. Resource ReserVation Protocol -- Version 1 Functional
Specification, RFC 2205, section B.
::= { gmplsTunnelErrorEntry 5 }
::= { gmplsTunnelErrorEntry 6 }
DESCRIPTION
"The sequence of interface identifier TLVs reported with the
error by the protocol code. The interpretation of the TLVs and
the encoding within the protocol are described in the
references. A value of zero in the first octet indicates that no
TLVs are present."
REFERENCE
"1. Generalized MPLS Signaling - RSVP-TE Extensions, RFC 3473,
section 8.2."
::= { gmplsTunnelErrorEntry 7 }
::= { gmplsTunnelErrorEntry 8 }
--
-- Notifications
--
The objects in this notification provide additional error information that indicates the reason why the tunnel has
transitioned to down(2).
Note that an implementation MUST only issue one of
mplsTunnelDown and gmplsTunnelDown for any single event on a
single tunnel. If the tunnel has an entry in the
gmplsTunnelTable, an implementation SHOULD use gmplsTunnelDown
for all tunnel-down events and SHOULD NOT use mplsTunnelDown.
This notification is subject to the control of
mplsTunnelNotificationEnable. When that object is set
to false(2), then the notification must not be issued.
Further, this notification is also subject to
mplsTunnelNotificationMaxRate. That object indicates the
maximum number of notifications issued per second. If events
occur more rapidly, the implementation may simply fail to emit
some notifications during that period, or may queue them until
an appropriate time. The notification rate applies to the sum
of all notifications in the MPLS-TE-STD-MIB and
GMPLS-TE-STD-MIB modules applied across the whole of the
reporting device.
mplsTunnelOperStatus, mplsTunnelAdminStatus, mplsTunnelDown,
mplsTunnelNotificationEnable, and mplsTunnelNotificationMaxRate
objects are found in MPLS-TE-STD-MIB."
REFERENCE
"1. Multiprotocol Label Switching (MPLS) Traffic Engineering
(TE) Management Information Base (MIB), RFC 3812."
::= { gmplsTeNotifications 1 }
OBJECT IDENTIFIER ::= { gmplsTeConformance 1 }
OBJECT IDENTIFIER ::= { gmplsTeConformance 2 }
-- Compliance requirement for fully compliant implementations.
The mandatory group has to be implemented by all LSRs that originate, terminate, or act as transit for TE-LSPs/tunnels. In addition, depending on the type of tunnels supported, other
groups become mandatory as explained below."
MODULE MPLS-TE-STD-MIB -- The MPLS-TE-STD-MIB, RFC 3812
MANDATORY-GROUPS {
mplsTunnelGroup,
mplsTunnelScalarGroup
}
::= { gmplsTeCompliances 1 }
-- Compliance requirement for read-only compliant implementations.
MODULE -- this module
-- The mandatory group has to be implemented by all LSRs that
-- originate, terminate, or act as transit for TE-LSPs/tunnels.
-- In addition, depending on the type of tunnels supported, other
-- groups become mandatory as explained below.
"Write access is not required."
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
MIN-ACCESS read-only
DESCRIPTION "Only unknown(0), ipv4(1), and ipv6(2) support
is required."
SYNTAX InetAddress (SIZE(0|4|16))
MIN-ACCESS read-only
DESCRIPTION "An implementation is only required to support
unknown(0), ipv4(1), and ipv6(2) sizes."
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
MIN-ACCESS read-only
DESCRIPTION "Only unknown(0), ipv4(1), and ipv6(2) support
is required."
SYNTAX InetAddress (SIZE(0|4|16))
MIN-ACCESS read-only
DESCRIPTION "An implementation is only required to support
unknown(0), ipv4(1), and ipv6(2) sizes."
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
MIN-ACCESS read-only
DESCRIPTION "Only unknown(0), ipv4(1), and ipv6(2) support
is required."
SYNTAX InetAddress (SIZE(0|4|16))
MIN-ACCESS read-only
DESCRIPTION "An implementation is only required to support
unknown(0), ipv4(1), and ipv6(2) sizes."
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
MIN-ACCESS read-only
DESCRIPTION "Only unknown(0), ipv4(1), and ipv6(2) support
is required."
SYNTAX InetAddress (SIZE(0|4|16))
MIN-ACCESS read-only
DESCRIPTION "An implementation is only required to support
unknown(0), ipv4(1), and ipv6(2) sizes."
-- gmplsTunnelHopLabelStatuses has max access read-only
-- gmplsTunnelARHopTable
-- all objects have max access read-only -- gmplsTunnelCHopTable
-- all objects have max access read-only -- gmplsTunnelReversePerfTable
-- all objects have max access read-only -- gmplsTunnelErrorTable
-- all objects have max access read-only
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
DESCRIPTION "Only unknown(0), ipv4(1), and ipv6(2) support
is required."
SYNTAX InetAddress (SIZE(0|4|16))
DESCRIPTION "An implementation is only required to support
unknown(0), ipv4(1), and ipv6(2)."
::= { gmplsTeCompliances 2 }
OBJECTS {
gmplsTunnelDirection,
gmplsTunnelReversePerfPackets,
gmplsTunnelReversePerfHCPackets,
gmplsTunnelReversePerfErrors,
gmplsTunnelReversePerfBytes,
gmplsTunnelReversePerfHCBytes,
gmplsTunnelErrorLastErrorType,
gmplsTunnelErrorLastTime,
gmplsTunnelErrorReporterType,
gmplsTunnelErrorReporter,
gmplsTunnelErrorCode,
gmplsTunnelErrorSubcode,
gmplsTunnelErrorTLVs,
gmplsTunnelErrorHelpString,
gmplsTunnelUnnumIf
}
STATUS current
DESCRIPTION
"Necessary, but not sufficient, set of objects to implement
tunnels. In addition, depending on the type of the tunnels
supported (for example, manually configured or signaled,
persistent or non-persistent, etc.), the
gmplsTunnelSignaledGroup group is mandatory."
::= { gmplsTeGroups 1 }
OBJECTS {
gmplsTunnelAttributes,
gmplsTunnelLSPEncoding,
gmplsTunnelSwitchingType,
gmplsTunnelLinkProtection,
gmplsTunnelGPid,
gmplsTunnelSecondary,
gmplsTunnelPathComp,
gmplsTunnelUpstreamNotifyRecipientType,
gmplsTunnelUpstreamNotifyRecipient,
gmplsTunnelSendResvNotifyRecipientType,
gmplsTunnelSendResvNotifyRecipient,
gmplsTunnelDownstreamNotifyRecipientType,
gmplsTunnelDownstreamNotifyRecipient,
gmplsTunnelSendPathNotifyRecipientType,
gmplsTunnelSendPathNotifyRecipient,
gmplsTunnelAdminStatusFlags,
gmplsTunnelHopLabelStatuses,
gmplsTunnelHopExplicitForwardLabel,
gmplsTunnelHopExplicitForwardLabelPtr,
gmplsTunnelHopExplicitReverseLabel,
gmplsTunnelHopExplicitReverseLabelPtr
}
STATUS current
DESCRIPTION
"Objects needed to implement signaled tunnels."
::= { gmplsTeGroups 2 }
OBJECTS {
gmplsTunnelsConfigured,
gmplsTunnelsActive
}
STATUS current
DESCRIPTION
"Scalar objects needed to implement MPLS tunnels."
::= { gmplsTeGroups 3 }
OBJECTS {
gmplsTunnelExtraParamsPtr,
gmplsTunnelARHopLabelStatuses,
gmplsTunnelARHopExplicitForwardLabel,
gmplsTunnelARHopExplicitForwardLabelPtr,
gmplsTunnelARHopExplicitReverseLabel,
gmplsTunnelARHopExplicitReverseLabelPtr,
gmplsTunnelARHopProtection,
gmplsTunnelCHopLabelStatuses,
gmplsTunnelCHopExplicitForwardLabel,
gmplsTunnelCHopExplicitForwardLabelPtr,
gmplsTunnelCHopExplicitReverseLabel,
gmplsTunnelCHopExplicitReverseLabelPtr
}
STATUS current
DESCRIPTION
"The objects in this group are optional."
::= { gmplsTeGroups 4 }
NOTIFICATIONS {
gmplsTunnelDown
}
STATUS current
DESCRIPTION
"Set of notifications implemented in this module. None is
mandatory."
::= { gmplsTeGroups 5 }
It is clear that the MIB modules described in this document in association with MPLS-TE-STD-MIB [RFC3812] are potentially useful for monitoring of MPLS and GMPLS tunnels. These MIB modules can also be used for configuration of certain objects, and anything that can be configured can be incorrectly configured, with potentially disastrous results.
There are a number of management objects defined in these MIB modules 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 can have a negative effect on network operations. These are the tables and objects and their sensitivity/vulnerability:
Some of the readable objects in these MIB modules (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:
SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPsec), even then, 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 these MIB modules.
It is RECOMMENDED that implementers consider the security features as provided by the SNMPv3 framework (see [RFC3410], section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy).
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.
This document is a product of the CCAMP Working Group.
This document extends [RFC3812]. The authors would like to express their gratitude to all those who worked on that earlier MIB document. Thanks also to Tony Zinicola and Jeremy Crossen for their valuable contributions during an early implementation, and to Lars Eggert,
Baktha Muralidharan, Tom Petch, Dan Romascanu, Dave Thaler, and Bert Wijnen for their review comments.
Special thanks to Joan Cucchiara and Len Nieman for their help with compilation issues.
Joan Cucchiara provided a helpful and very thorough MIB Doctor review.
IANA has rooted MIB objects in the MIB modules contained in this document according to the sections below.
IANA has rooted MIB objects in the GMPLS-TE-STD-MIB module contained in this document under the mplsStdMIB subtree.
IANA has made the following assignments in the "NETWORK MANAGEMENT PARAMETERS" registry located at http://www.iana.org/assignments/ smi-numbers in table:
...mib-2.transmission.mplsStdMIB (1.3.6.1.2.1.10.166)
Decimal Name References ------- ----- ---------- 13 GMPLS-TE-STD-MIB [RFC4802]
In the future, GMPLS-related standards-track MIB modules should be rooted under the mplsStdMIB (sic) subtree. IANA has been requested to manage that namespace in the SMI Numbers registry [RFC3811]. New assignments can only be made via a Standards Action as specified in [RFC2434].
Three MIB objects in the GMPLS-TE-STD-MIB module defined in this document (gmplsTunnelLSPEncoding, gmplsTunnelSwitchingType, and gmplsTunnelGPid) use textual conventions imported from the IANA- GMPLS-TC-MIB module. The purpose of defining these textual conventions in a separate MIB module is to allow additional values to be defined without having to issue a new version of this document. The Internet Assigned Numbers Authority (IANA) is responsible for the assignment of all Internet numbers; it will administer the values associated with these textual conventions.
The rules for additions or changes to IANA-GMPLS-TC-MIB are outlined in the DESCRIPTION clause associated with its MODULE-IDENTITY statement.
The current version of IANA-GMPLS-TC-MIB can be accessed from the IANA home page at: http://www.iana.org/.
This section provides the base definition of the IANA GMPLS TC MIB module. This MIB module is under the direct control of IANA. Please see the most updated version of this MIB at
<http://www.iana.org/assignments/ianagmplstc-mib>.
This MIB makes reference to the following documents: [RFC2578], [RFC2579], [RFC3471], [RFC3473], [RFC4202], [RFC4328], and [RFC4783].
IANA assigned an OID to the IANA-GMPLS-TC-MIB module specified in this document as { mib-2 152 }.
IANA-GMPLS-TC-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, mib-2 FROM SNMPv2-SMI -- RFC 2578
TEXTUAL-CONVENTION FROM SNMPv2-TC; -- RFC 2579
ianaGmpls MODULE-IDENTITY
LAST-UPDATED
"200702270000Z" -- 27 February 2007 00:00:00 GMT
ORGANIZATION
"IANA"
CONTACT-INFO
"Internet Assigned Numbers Authority
Postal: 4676 Admiralty Way, Suite 330
Marina del Rey, CA 90292
Tel: +1 310 823 9358
E-Mail: iana@iana.org"
DESCRIPTION
"Copyright © The IETF Trust (2007). The initial version
of this MIB module was published in RFC 4802. For full legal
notices see the RFC itself. Supplementary information
may be available on:
http://www.ietf.org/copyrights/ianamib.html"
REVISION
"200702270000Z" -- 27 February 2007 00:00:00 GMT
DESCRIPTION
"Initial version issued as part of RFC 4802."
::= { mib-2 152 }
IANAGmplsLSPEncodingTypeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This type is used to represent and control
the LSP encoding type of an LSP signaled by a GMPLS
signaling protocol.
This textual convention is strongly tied to the LSP Encoding Types sub-registry of the GMPLS Signaling Parameters registry managed by IANA. Values should be assigned by IANA in step with the LSP Encoding Types sub-registry and using the same registry management rules. However, the actual values used in this textual convention are solely within the purview of IANA and do not necessarily match the values in the LSP Encoding Types sub-registry.
The definition of this textual convention with the
addition of newly assigned values is published
periodically by the IANA, in either the Assigned
Numbers RFC, or some derivative of it specific to
Internet Network Management number assignments. (The
latest arrangements can be obtained by contacting the
IANA.)
Requests for new values should be made to IANA via
email (iana@iana.org)."
REFERENCE
"1. Generalized Multi-Protocol Label Switching (GMPLS)
Signaling Functional Description, RFC 3471, section
3.1.1.
SYNTAX INTEGER {
tunnelLspNotGmpls(0), -- GMPLS is not in use
tunnelLspPacket(1), -- Packet
tunnelLspEthernet(2), -- Ethernet
tunnelLspAnsiEtsiPdh(3), -- PDH
-- the value 4 is deprecated
tunnelLspSdhSonet(5), -- SDH or SONET
-- the value 6 is deprecated
tunnelLspDigitalWrapper(7), -- Digital Wrapper
tunnelLspLambda(8), -- Lambda
tunnelLspFiber(9), -- Fiber
-- the value 10 is deprecated
tunnelLspFiberChannel(11), -- Fiber Channel
tunnelDigitalPath(12), -- Digital Path
tunnelOpticalChannel(13) -- Optical Channel
}
IANAGmplsSwitchingTypeTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This type is used to represent and
control the LSP switching type of an LSP signaled by a
GMPLS signaling protocol.
This textual convention is strongly tied to the Switching Types sub-registry of the GMPLS Signaling Parameters registry managed by IANA. Values should be assigned by IANA in step with the Switching Types sub-registry and using the same registry management rules. However, the actual values used in this textual convention are solely within the purview of IANA and do not necessarily match the values in the Switching Types sub-registry.
The definition of this textual convention with the
addition of newly assigned values is published
periodically by the IANA, in either the Assigned
Numbers RFC, or some derivative of it specific to
Internet Network Management number assignments. (The
latest arrangements can be obtained by contacting the
IANA.)
Requests for new values should be made to IANA via
email (iana@iana.org)."
REFERENCE
"1. Routing Extensions in Support of Generalized
Multi-Protocol Label Switching, RFC 4202, section 2.4.
2. Generalized Multi-Protocol Label Switching (GMPLS)
Signaling Functional Description, RFC 3471, section
3.1.1."
SYNTAX INTEGER {
unknown(0), -- none of the following, or not known
psc1(1), -- Packet-Switch-Capable 1
psc2(2), -- Packet-Switch-Capable 2
psc3(3), -- Packet-Switch-Capable 3
psc4(4), -- Packet-Switch-Capable 4
l2sc(51), -- Layer-2-Switch-Capable
tdm(100), -- Time-Division-Multiplex
lsc(150), -- Lambda-Switch-Capable
fsc(200) -- Fiber-Switch-Capable
}
IANAGmplsGeneralizedPidTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This data type is used to represent and control the LSP
Generalized Protocol Identifier (G-PID) of an LSP
signaled by a GMPLS signaling protocol.
This textual convention is strongly tied to the Generalized PIDs (G-PID) sub-registry of the GMPLS Signaling Parameters registry managed by IANA. Values should be assigned by IANA in step with the Generalized PIDs (G-PID) sub-registry and using the same registry management rules. However, the actual values used in this textual convention are solely within the purview of IANA and do not necessarily match the values in the Generalized PIDs (G-PID) sub-registry.
The definition of this textual convention with the
addition of newly assigned values is published
periodically by the IANA, in either the Assigned
Numbers RFC, or some derivative of it specific to
Internet Network Management number assignments. (The
latest arrangements can be obtained by contacting the
IANA.)
Requests for new values should be made to IANA via
email (iana@iana.org)."
REFERENCE
"1. Generalized Multi-Protocol Label Switching (GMPLS)
Signaling Functional Description, RFC 3471, section
3.1.1.
SYNTAX INTEGER {
unknown(0), -- unknown or none of the following
-- the values 1, 2, 3 and 4 are reserved in RFC 3471
asynchE4(5),
asynchDS3T3(6),
asynchE3(7),
bitsynchE3(8),
bytesynchE3(9),
asynchDS2T2(10),
bitsynchDS2T2(11),
reservedByRFC3471first(12),
asynchE1(13),
bytesynchE1(14),
bytesynch31ByDS0(15),
asynchDS1T1(16),
bitsynchDS1T1(17),
bytesynchDS1T1(18),
vc1vc12(19),
reservedByRFC3471second(20),
reservedByRFC3471third(21),
ds1SFAsynch(22),
ds1ESFAsynch(23),
ds3M23Asynch(24),
ds3CBitParityAsynch(25),
vtLovc(26),
stsSpeHovc(27),
posNoScramble16BitCrc(28),
posNoScramble32BitCrc(29),
posScramble16BitCrc(30),
posScramble32BitCrc(31),
atm(32),
ethernet(33),
sdhSonet(34),
digitalwrapper(36),
lambda(37),
ansiEtsiPdh(38),
lapsSdh(40),
fddi(41),
dqdb(42),
fiberChannel3(43),
hdlc(44),
ethernetV2DixOnly(45),
ethernet802dot3Only(46),
g709ODUj(47),
g709OTUk(48),
g709CBRorCBRa(49),
g709CBRb(50),
g709BSOT(51),
g709BSNT(52),
gfpIPorPPP(53),
gfpEthernetMAC(54),
gfpEthernetPHY(55),
g709ESCON(56),
g709FICON(57),
g709FiberChannel(58)
}
IANAGmplsAdminStatusInformationTC ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This data type determines the setting of the
Admin Status flags in the Admin Status object or TLV, as
described in RFC 3471. Setting this object to a non-zero
value will result in the inclusion of the Admin Status
object or TLV on signaling messages.
This textual convention is strongly tied to the Administrative Status Information Flags sub-registry of the GMPLS Signaling Parameters registry managed by IANA. Values should be assigned by IANA in step with the Administrative Status Flags sub-registry and using the same registry management rules. However, the actual values used in this textual convention are solely within the purview of IANA and do not necessarily match the values in the Administrative Status Information Flags sub-registry.
The definition of this textual convention with the
addition of newly assigned values is published
periodically by the IANA, in either the Assigned
Numbers RFC, or some derivative of it specific to
Internet Network Management number assignments. (The
latest arrangements can be obtained by contacting the
IANA.)
Requests for new values should be made to IANA via
email (iana@iana.org)."
REFERENCE
"1. Generalized Multi-Protocol Label Switching (GMPLS)
Signaling Functional Description, RFC 3471, section 8.
2. Generalized MPLS Signaling - RSVP-TE Extensions,
RFC 3473, section 7.
SYNTAX BITS {
reflect(0), -- Reflect bit (RFC 3471)
reserved1(1), -- reserved
reserved2(2), -- reserved
reserved3(3), -- reserved
reserved4(4), -- reserved
reserved5(5), -- reserved
reserved6(6), -- reserved
reserved7(7), -- reserved
reserved8(8), -- reserved
reserved9(9), -- reserved
reserved10(10), -- reserved
reserved11(11), -- reserved
reserved12(12), -- reserved
reserved13(13), -- reserved
reserved14(14), -- reserved
reserved15(15), -- reserved
reserved16(16), -- reserved
reserved17(17), -- reserved
reserved18(18), -- reserved
reserved19(19), -- reserved
reserved20(20), -- reserved
reserved21(21), -- reserved
reserved22(22), -- reserved
reserved23(23), -- reserved
reserved24(24), -- reserved
reserved25(25), -- reserved
reserved26(26), -- reserved
reserved27(27), -- Inhibit Alarm bit (RFC 4783)
reserved28(28), -- reserved
testing(29), -- Testing bit (RFC 3473)
administrativelyDown(30), -- Admin down (RFC 3473)
deleteInProgress(31) -- Delete bit (RFC 3473)
}
END
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2205] Braden, R., Zhang, L., Berson, S., Herzog, S., and S. Jamin, "Resource ReSerVation Protocol (RSVP) -- Version 1 Functional Specification", RFC 2205, September 1997.
[RFC2434] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 2434, October 1998.
[RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999.
[RFC3031] Rosen, E., Viswanathan, A., and R. Callon, "Multiprotocol Label Switching Architecture", RFC 3031, January 2001.
[RFC3209] Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan, V., and G. Swallow, "RSVP-TE: Extensions to RSVP for LSP Tunnels", RFC 3209, December 2001.
[RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks", STD 62, RFC 3411, December 2002.
[RFC3471] Berger, L., "Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional Description", RFC 3471, January 2003.
[RFC3473] Berger, L., "Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions", RFC 3473, January 2003.
[RFC3477] Kompella, K. and Y. Rekhter, "Signalling Unnumbered Links in Resource ReSerVation Protocol - Traffic Engineering (RSVP-TE)", RFC 3477, January 2003.
[RFC3811] Nadeau, T. and J. Cucchiara, "Definitions of Textual Conventions (TCs) for Multiprotocol Label Switching (MPLS) Management", RFC 3811, June 2004.
[RFC3812] Srinivasan, C., Viswanathan, A., and T. Nadeau, "Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB)", RFC 3812, June 2004.
[RFC3813] Srinivasan, C., Viswanathan, A., and T. Nadeau, "Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) Management Information Base (MIB)", RFC 3813, June 2004.
[RFC3945] Mannie, E., "Generalized Multi-Protocol Label Switching (GMPLS) Architecture", RFC 3945, October 2004.
[RFC4001] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, "Textual Conventions for Internet Network Addresses", RFC 4001, February 2005.
[RFC4202] Kompella, K. and Y. Rekhter, "Routing Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS)", RFC 4202, October 2005.
[RFC4328] Papadimitriou, D., "Generalized Multi-Protocol Label Switching (GMPLS) Signaling Extensions for G.709 Optical Transport Networks Control", RFC 4328, January 2006.
[RFC4783] Berger, L., "GMPLS - Communication of Alarm Information", RFC 4783, December 2006.
[RFC4803] Nadeau, T., Ed. and A. Farrel, Ed., "Generalized Multiprotocol Label Switching (GMPLS) Label Switching Router (LSR) Management Information Base", RFC 4803, February 2007.
[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB", RFC 2863, June 2000.
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002.
[RFC3472] Ashwood-Smith, P. and L. Berger, "Generalized Multi- Protocol Label Switching (GMPLS) Signaling Constraint-based Routed Label Distribution Protocol (CR-LDP) Extensions", RFC 3472, January 2003.
Thomas D. Nadeau
Cisco Systems, Inc.
1414 Massachusetts Ave.
Boxborough, MA 01719
EMail: tnadeau@cisco.com
Cheenu Srinivasan
Bloomberg L.P.
731 Lexington Ave.
New York, NY 10022
Phone: +1-212-617-3682
EMail: cheenu@bloomberg.net
Adrian Farrel
Old Dog Consulting
Phone: +44-(0)-1978-860944
EMail: adrian@olddog.co.uk
Tim Hall
Data Connection Ltd.
100 Church Street
Enfield, Middlesex
EN2 6BQ, UK
Phone: +44 20 8366 1177
EMail: tim.hall@dataconnection.com
Ed Harrison
Data Connection Ltd.
100 Church Street
Enfield, Middlesex
EN2 6BQ, UK
Phone: +44 20 8366 1177
EMail: ed.harrison@dataconnection.com
Copyright © The IETF Trust (2007).
This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights.
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