Information Elements for Data Link Layer Traffic Measurement
draft-kashima-ipfix-data-link-layer-monitoring-06
The information below is for an old version of the document.
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
|
|
|---|---|---|---|
| Authors | Shingo Kashima , Kensuke Nakata , Atsushi Kobayashi | ||
| Last updated | 2011-09-14 (Latest revision 2011-03-15) | ||
| Replaced by | draft-ietf-ipfix-data-link-layer-monitoring, RFC 7133 | ||
| RFC stream | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | I-D Exists | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
draft-kashima-ipfix-data-link-layer-monitoring-06
IP Flow Information Export S. Kashima
Internet-Draft K. Nakata
Intended status: Standards Track NTT
Expires: March 17, 2012 A. Kobayashi
NTT East
September 14, 2011
Information Elements for Data Link Layer Traffic Measurement
draft-kashima-ipfix-data-link-layer-monitoring-06
Abstract
This document describes Information Elements related to data link
layer. They are used by the IP Flow Information Export (IPFIX)
protocol for encoding measured data link layer traffic information.
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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Task Force (IETF). Note that other groups may also distribute
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 17, 2012.
Copyright Notice
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This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Conventions Used in This Document . . . . . . . . . . . . 4
2. Extended Ethernet Technology . . . . . . . . . . . . . . . . . 4
2.1. Wide-Area Ethernet Summary . . . . . . . . . . . . . . . . 4
2.2. Data Center Bridging Summary . . . . . . . . . . . . . . . 5
2.3. Multiple Path Ethernet Summary . . . . . . . . . . . . . . 5
2.4. VXLAN Summary . . . . . . . . . . . . . . . . . . . . . . 6
3. New Information Elements . . . . . . . . . . . . . . . . . . . 6
3.1. dataLinkFrameSize . . . . . . . . . . . . . . . . . . . . 6
3.2. dataLinkFrameSection . . . . . . . . . . . . . . . . . . . 7
3.3. dataLinkFrameType . . . . . . . . . . . . . . . . . . . . 8
3.4. sectionOffset . . . . . . . . . . . . . . . . . . . . . . 8
3.5. sectionObservedOctets . . . . . . . . . . . . . . . . . . 8
3.6. dot1qServiceInstanceTag . . . . . . . . . . . . . . . . . 9
3.7. dot1qServiceInstanceId . . . . . . . . . . . . . . . . . . 9
3.8. dot1qServiceInstancePriority . . . . . . . . . . . . . . . 10
3.9. dot1qCustomerDestinationMacAddress . . . . . . . . . . . . 10
3.10. dot1qCustomerSourceMacAddress . . . . . . . . . . . . . . 10
4. Modification of Existing Information Elements Related to
Packet Section . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1. ipHeaderPacketSection . . . . . . . . . . . . . . . . . . 11
4.2. ipPayloadPacketSection . . . . . . . . . . . . . . . . . . 11
4.3. mplsLabelStackSection . . . . . . . . . . . . . . . . . . 11
4.4. mplsPayloadPacketSection . . . . . . . . . . . . . . . . . 12
5. Modification of Existing Information Elements Related to
VLAN Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1. dot1qVlanId . . . . . . . . . . . . . . . . . . . . . . . 12
5.2. dot1qPriority . . . . . . . . . . . . . . . . . . . . . . 13
5.3. dot1qCustomerVlanId . . . . . . . . . . . . . . . . . . . 14
5.4. dot1qCustomerPriority . . . . . . . . . . . . . . . . . . 14
6. Security Considerations . . . . . . . . . . . . . . . . . . . 15
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.1. Normative References . . . . . . . . . . . . . . . . . . . 15
8.2. Informative References . . . . . . . . . . . . . . . . . . 15
Appendix A. Frame Formats in Wide-Area Ethernet Network . . . . . 18
Appendix B. Frame Formats in Data Center Network . . . . . . . . 22
Appendix C. Template Formats Example . . . . . . . . . . . . . . 24
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 24
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1. Introduction
Ethernet [IEEE802.1D] and VLAN (Virtual LAN) [IEEE802.1Q-2005]
technologies used to be used only in Local Area Networks. Recently,
they have been used in Wide Area Networks, e.g., L2-VPN services.
Accordingly, the IEEE802.1Q standard has been enhanced to IEEE802.1ad
[IEEE802.1ad-2005] and IEEE802.1ah [IEEE802.1ah-2008]. And, Ethernet
in data center also has been enhanced for server virtualization and
I/O consolidation.
While these innovations provide flexibility, scalability, and
mobility to an existing network architecture, it increases the
complexity of traffic measurement due to the existence of various
Ethernet header formats. To cope with this, a more sophisticated
method is required.
IPFIX/PSAMP helps to resolve these problems. However, the PSAMP
Information Model [RFC5477] and the IPFIX Information Model [RFC5101]
are not yet enough for Information Elements related to data link
layer, e.g., Ethernet header forms. This document describes the
Information Elements related to data link layers that enable a more
sophisticated traffic measurement method.
1.1. Conventions Used in This Document
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 RFC 2119 [RFC2119].
2. Extended Ethernet Technology
2.1. Wide-Area Ethernet Summary
Provider Bridge [IEEE802.1ad-2005] and Provider Backbone Bridge
[IEEE802.1ah-2008], which are standards for the Wide-Area Ethernet,
are described below.
o In Provider Bridge [IEEE802.1ad-2005], there are two VLAN IDs:
Service VLAN Identifier (S-VID) and Customer VLAN Identifier
(C-VID). S-VID is assigned to an Ethernet frame by a service
provider, while C-VID is independently assigned to an Ethernet
frame by a customer. Frame switching in a service provider
network is based on only S-VID.
o In Provider Backbone Bridge [IEEE802.1ah-2008], new Ethernet
fields, such as Backbone VLAN Identifier (B-VID) and Backbone
Service Instance Identifier (I-SID), are introduced to overcome
the limitations on the VLAN identifier space on IEEE802.1ad
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[IEEE802.1ad-2005] and to isolate the service provider and
customer identifier spaces. Frame switching is based on a 12-bit
B-VID, and customer identification is based on a 24-bit I-SID. A
flexible network design has become possible because network
management is separated from customer management. Other Ethernet
fields that indicate quality of service (QoS) class are B-PCP,
B-DEI, I-PCP, and I-DEI.
Provider Backbone Bridge enables a wide-area Ethernet service to be
improved from a flat network to a hierarchical network co-existing
Provider Bridge and Provider Backbone Bridge.
Frame formats used in Wide-Area Ethernet are shown in Appendix A.
2.2. Data Center Bridging Summary
In data center networks, Ethernet needs to be enhanced to provide the
flexibility, mobility for server virtualization, and I/O
consolidation. In IEEE802.1 Data Center Bridging Task Group, several
Ethernet header formats are proposed to enable a simplifying networks
and server managements.
The one of the enhanced methods is Bridge Port Extension
[IEEE802.1Qbh], which brings a traffic exchange point to upper
bridges. Bridge Port Extension introduces a Ethernet format named
Extension Tag (E-TAG) in addition to existing Service VLAN Tag
(S-TAG) and Customer VLAN Tag (C-TAG) to move the policy enhancement
to upper bridges in data center network. On the other hand, the
complexity for traffic measurement would be increased, because
multiple Ethernet header formats as shown in Appendix B co-exist in
the same network.
2.3. Multiple Path Ethernet Summary
Inside data center networks, Ethernet need to be enhaced to support
multiple path for effective utilization of bandwidth. Existing
Ethernet does not support multiple path because it is based on STP
(Spanning Tree Protocol) [IEEE802.1D].
Two solutions for multiple path Ethernet are discussed for
standardization. One is Shortest Path Bridging [IEEE802.1aq] in IEEE
802, the other is TRILL (Transparent Interconnection of Lots of
Links) [RFC6325] in IETF. Both solutions realize multiple path with
IS-IS [ISO_IEC.10589_2002] and Layer 2 over Layer 2 encapsulation.
Shortest Path Bridging uses IEEE802.1ah [IEEE802.1ah-2008] header as
an encapsulation technology and TRILL uses an unique header as shown
in Section 3 of [RFC6325].
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In multiple path Ehternet network, a traffic measurement based on MAC
address and VLAN Tag is more important than single path Ethernet
network in which traffic measurement is based on only VLAN Tag.
2.4. VXLAN Summary
Inside and between data center networks, the existing Ethernet and
VLAN technologies have two problems. One is that 12 bit of VLAN ID
does not have enough length for identifying a lot of tenants. The
other is that it is difficult to place same VLAN in multiple data
centers.
The solution for the problems is VXLAN
[I-D.mahalingam-dutt-dcops-vxlan]. VXLAN has 24 bit length of
identifier named VXLAN Segment ID/VXLAN Network Identifier (VNI) and
uses Layer 2 over Layer 3 encapsulation with the frame format as show
in Section 5 of [I-D.mahalingam-dutt-dcops-vxlan].
3. New Information Elements
The following Information Elements are necessary for enabling the
IPFIX/PSAMP traffic measurement for data link layer, which is not
limited to Ethernet because the method can be applied to other data
link protocols as well. Note that these are proposed IDs, subject to
approval by IANA.
+-----+------------------------------------+
| ID | Name |
+-----+------------------------------------+
| 312 | dataLinkFrameSize |
| 315 | dataLinkFrameSection |
| 347 | dataLinkFrameType |
| 348 | sectionOffset |
| 349 | sectionObservedOctets |
| 350 | dot1qServiceInstanceTag |
| 351 | dot1qServiceInstanceId |
| 352 | dot1qServiceInstancePriority |
| 353 | dot1qCustomerDestinationMacAddress |
| 354 | dot1qCustomerSourceMacAddress |
+-----+------------------------------------+
3.1. dataLinkFrameSize
Description:
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This Information Element specifies the length of the selected data
link frame.
The data link layer is defined in [ISO_IEC.7498-1_1994].
Abstract Data Type: unsigned16
Data Type Semantics: quantity
ElementId: 312
Status: current
3.2. dataLinkFrameSection
Description:
This Information Element carries n octets from the data link frame
of a selected frame, starting sectionOffset octets into the frame.
The sectionObservedOctets expresses how much data was observed,
while the remainder is padding.
When the sectionObservedOctets field corresponding to this
Information Element exists, this Information Element MAY have a
fixed length and MAY be padded, or MAY have a variable length.
When the sectionObservedOctets field corresponding to this
Information Element does not exist, this Information Element
SHOULD have a variable length and MUST NOT be padded. In this
case, the size of the exported section may be constrained due to
limitations in the IPFIX protocol.
Further Information Elements, i.e., dataLinkFrameType and
dataLinkFrameSize are needed to specify the data link type and the
size of the data link frame of this Information Element. A set of
these Information Elements MAY be contained in a structured data
type, as expressed in [RFC6313]. Or a set of these Information
Elements MAY be contained in one Flow Record as shown in Appendix
C.
The data link layer is defined in [ISO_IEC.7498-1_1994].
Abstract Data Type: octetArray
ElementId: 315
Status: current
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3.3. dataLinkFrameType
Description:
This Information Element specifies the type of the selected data
link frame.
The following data link types are defined here.
- 0x01 ETHERNET
Further values may be assigned by IANA.
The data link layer is defined in [ISO_IEC.7498-1_1994].
Abstract Data Type: unsigned16
Data Type Semantics: identifier
ElementId: 347
Status: current
3.4. sectionOffset
Description:
This Information Element specifies the offset of the packet
section (e.g., dataLinkFrameSection, ipHeaderPacketSection,
ipPayloadPacketSection, mplsLabelStackSection and
mplsPayloadPacketSection). If this Information Element is
omitted, it defaults to zero.
Abstract Data Type: unsigned16
Data Type Semantics: quantity
ElementId: 348
Status: current
3.5. sectionObservedOctets
Description:
This Information Element specifies the observed length of the
packet section (e.g., dataLinkFrameSection, ipHeaderPacketSection,
ipPayloadPacketSection, mplsLabelStackSection and
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mplsPayloadPacketSection) when padding is used.
The packet section may be of a fixed size larger than the
sectionObservedOctets. In this case, octets in the packet section
beyond the sectionObservedOctets MUST follow the [RFC5101] rules
for padding (ie, be composed of zero (0) valued octets).
Abstract Data Type: unsigned16
Data Type Semantics: quantity
ElementId: 349
Status: current
3.6. dot1qServiceInstanceTag
Description:
This Information Element, which may have 16 octets length, carries
the Backbone Service Instance Tag (I-TAG) Tag Control Information
(TCI) field of an Ethernet frame as described in
[IEEE802.1ah-2008].
Abstract Data Type: octetArray
Data Type Semantics: identifier
ElementId: 350
Status: current
3.7. dot1qServiceInstanceId
Description:
The value of the 3-bit Backbone Service Instance Priority Code
Point (I-PCP) portion of the Backbone Service Instance Tag (I-TAG)
Tag Control Information (TCI) field of an Ethernet frame as
described in section 9.8 of [IEEE802.1ah-2008]. The structure and
semantics within the Tag Control Information field are defined in
IEEE802.1ah.
Abstract Data Type: unsigned32
Data Type Semantics: identifier
ElementId: 351
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Status: current
3.8. dot1qServiceInstancePriority
Description:
The value of the 24-bit Backbone Service Instance Identifier
(I-SID) portion of the Backbone Service Instance Tag (I-TAG) Tag
Control Information (TCI) field of an Ethernet frame as described
in section 9.8 of [IEEE802.1ah-2008]. The structure and semantics
within the Tag Control Information field are defined in
IEEE802.1ah.
Abstract Data Type: unsigned8
Data Type Semantics: identifier
ElementId: 352
Status: current
3.9. dot1qCustomerDestinationMacAddress
Description:
The value of the Customer Destination Address (C-DA) portion of
the Backbone Service Instance Tag (I-TAG) Tag Control Information
(TCI) field of an Ethernet frame as described in section 9.8 of
[IEEE802.1ah-2008]. The structure and semantics within the Tag
Control Information field are defined in IEEE802.1ah.
Abstract Data Type: macAddress
Data Type Semantics: identifier
ElementId: 353
Status: current
3.10. dot1qCustomerSourceMacAddress
Description:
The value of the Customer Source Address (C-SA) portion of the
Backbone Service Instance Tag (I-TAG) Tag Control Information
(TCI) field of an Ethernet frame as described in section 9.8 of
[IEEE802.1ah-2008]. The structure and semantics within the Tag
Control Information field are defined in IEEE802.1ah.
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Abstract Data Type: macAddress
Data Type Semantics: identifier
ElementId: 354
Status: current
4. Modification of Existing Information Elements Related to Packet
Section
--- This is open issue. ---
New Information Elements related to packet section (ie, sectionOffset
and sectionObservedOctets) can be applied to not only
dataLinkFrameSection but also all kinds of packet section. In this
case, existing Information Elements Description should be modified as
follows:
4.1. ipHeaderPacketSection
Description:
TBD
Abstract Data Type: octetArray
ElementId: 313
Status: current
4.2. ipPayloadPacketSection
Description:
TBD
Abstract Data Type: octetArray
ElementId: 314
Status: current
4.3. mplsLabelStackSection
Description:
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TBD
Abstract Data Type: octetArray
ElementId: 316
Status: current
4.4. mplsPayloadPacketSection
Description:
TBD
Abstract Data Type: octetArray
ElementId: 317
Status: current
5. Modification of Existing Information Elements Related to VLAN Tag
Information Elements related to Backbone Service Instance Tag (I-TAG)
and Backbone VLAN Tag (B-TAG) are required in order to monitor
IEEE802.1ah traffic with IPFIX/PSAMP. Because I-TAG has different
structure and semantics from Service VLAN Tag (S-TAG) and Customer
VLAN Tag (C-TAG), new Information Elements related to I-TAG are added
in section 3. But because B-TAG has same different structure and
semantics with C-TAG and S-TAG, Information Elements related to B-TAG
reuse existing Information Elements related to C-TAG and S-TAG.
Though they reuse existing Information Elements, it required to
modify existing Descriptions and Reference as follows:
5.1. dot1qVlanId
Description:
The value of the 12-bit VLAN Identifier portion of the Tag Control
Information field of an Ethernet frame as described in section
3.5.5 of [IEEE802.3-2005]. The structure and semantics within the
Tag Control Information field are defined in IEEE P802.1Q. In case
of a QinQ frame it represents the outer tag's VLAN identifier, in
case of an IEEE 802.1ad frame it represents the Service VLAN
identifier in the S-TAG Tag Control Information (TCI) field as
described in [IEEE802.1ad-2005] and in case of an IEEE 802.1ah
frame it represents the Backbone VLAN identifier in the B-TAG Tag
Control Information (TCI) field as described in
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[IEEE802.1ah-2008].
Abstract Data Type: unsigned16
Data Type Semantics: identifier
ElementId: 243
Status: current
Reference:
(1) [IEEE802.3-2005]
(2) [IEEE802.1ad-2005]
(3) [IEEE802.1ah-2008]
5.2. dot1qPriority
Description:
The value of the 3-bit User Priority portion of the Tag Control
Information field of an Ethernet frame as described in section
3.5.5 of [IEEE802.3-2005]. The structure and semantics within the
Tag Control Information field are defined in IEEE P802.1Q. In case
of a QinQ frame it represents the outer tag's 3-bit Class of
Service (CoS) identifier, in case of an IEEE 802.1ad frame it
represents the 3-bit Priority Code Point (PCP) portion of the
S-TAG Tag Control Information (TCI) field as described in
[IEEE802.1ad-2005] and in case of an IEEE 802.1ah frame it
represents the 3-bit Priority Code Point (PCP) portion of the
B-TAG Tag Control Information (TCI) field as described in
[IEEE802.1ah-2008].
Abstract Data Type: unsigned8
Data Type Semantics: identifier
ElementId: 244
Status: current
Reference:
(1) [IEEE802.3-2005]
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(2) [IEEE802.1ad-2005]
(3) [IEEE802.1ah-2008]
5.3. dot1qCustomerVlanId
Description:
In case of a QinQ frame it represents the inner tag's (*) VLAN
identifier, in case of an IEEE 802.1ad frame it represents the
Customer VLAN identifier in the C-TAG Tag Control Information
(TCI) field as described in [IEEE802.1ad-2005] and in case of an
IEEE 802.1ah frame it represents the Customer VLAN identifier in
the C-TAG Tag Control Information (TCI) field in encapsulated IEEE
802.1ad or IEEE 802.1Q frame as described in [IEEE802.1ah-2008].
(*) Note: the 802.1Q tag directly following the outer one.
Abstract Data Type: unsigned16
Data Type Semantics: identifier
ElementId: 245
Status: current
Reference:
(1) [IEEE802.1ad-2005]
(2) [IEEE802.1Q-2005]
(3) [IEEE802.1ah-2008]
5.4. dot1qCustomerPriority
Description:
In case of a QinQ frame it represents the inner tag's (*) Class of
Service (CoS) identifier, in case of an IEEE 802.1ad frame it
represents the 3-bit Priority Code Point (PCP) portion of the
C-TAG Tag Control Information (TCI) field as described in
[IEEE802.1ad-2005] and in case of an IEEE 802.1ah frame it
represents the 3-bit Priority Code Point (PCP) portion of the
C-TAG Tag Control Information (TCI) field in encapsulated IEEE
802.1ad or IEEE 802.1Q frame as described in [IEEE802.1ad-2005].
(*) Note: the 802.1Q tag directly following the outer one.
Abstract Data Type: unsigned8
Data Type Semantics: identifier
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ElementId: 246
Status: current
Reference:
(1) [IEEE802.1ad-2005]
(2) [IEEE802.1Q-2005]
(3) [IEEE802.1ah-2008]
6. Security Considerations
The recommendations in this document do not introduce any additional
security issues to those already mentioned in [RFC5101] and
[RFC5477].
7. IANA Considerations
This document requests that the Information Element IDs are allocated
as shown in section 3
In addition, the dataLinkFrameType Information Element requires the
creation of new IANA registries.
And this document requests that the existing Information Element
Description are modified as shown in section 4 and 5
8. References
8.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
8.2. Informative References
[I-D.mahalingam-dutt-dcops-vxlan]
Mahalingam, M., Dutt, D., Duda, K., Agarwal, P., Kreeger,
L., Sridhar, T., Bursell, M., and C. Wright, "VXLAN: A
Framework for Overlaying Virtualized Layer 2 Networks over
Layer 3 Networks", draft-mahalingam-dutt-dcops-vxlan-00
(work in progress), August 2011.
[IEEE802.1D]
IEEE Computer Society, "IEEE Standards for Local and
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Metropolitan Area Networks: Media Access Control (MAC)
Bridges", IEEE Std 802.1D-2004, June 2004.
[IEEE802.1Q-2005]
IEEE Computer Society, "IEEE Standards for Local and
Metropolitan Area Networks: Virtual Bridged Local Area
Networks", IEEE Std 802.1Q-2005, May 2006.
[IEEE802.1Qbh]
IEEE Computer Society, "Draft Standards for Local and
Metropolitan Area Networks: Virtual Bridged Local Area
Networks Amendment: Bridge Port Extension", IEEE
Std P802.1Qbh/D1.1, February 2011.
[IEEE802.1ad-2005]
IEEE Computer Society, "IEEE Standards for Local and
Metropolitan Area Networks: Virtual Bridged Local Area
Networks Amendment 4: Provider Bridges", IEEE Std 802.1ad-
2005, May 2006.
[IEEE802.1ah-2008]
IEEE Computer Society, "IEEE Standards for Local and
Metropolitan Area Networks: Virtual Bridged Local Area
Networks Amendment 7: Provider Backbone Bridges", IEEE
Std 802.1ah-2008, August 2008.
[IEEE802.1aq]
IEEE Computer Society, "Draft Standards for Local and
Metropolitan Area Networks: Virtual Bridged Local Area
Networks Amendment: Shortest Path Bridging", IEEE
Std P802.1aq/D3.6, February 2011.
[IEEE802.3-2005]
IEEE Computer Society, "IEEE Standard for Information
Technology - Telecommunications and Information Exchange
Between Systems - Local and Metropolitan Area Networks -
Specific Requirements Part 3: Carrier Sense Multiple
Access with Collision Detection (CSMA/CD) Access Method
and Physical Layer Specifications", IEEE Std 802.3-2005,
December 2005.
[ISO_IEC.10589_2002]
International Organization for Standardization,
"Information technology -- Telecommunications and
information exchange between systems -- Intermediate
System to Intermediate System intra-domain routing
information exchange protocol for use in conjunction with
the protocol for providing the connectionless-mode network
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service (ISO 8473)", ISO Standard 10589:2002,
November 2002.
[ISO_IEC.7498-1_1994]
International Organization for Standardization,
"Information technology -- Open Systems Interconnection --
Basic Reference Model: The Basic Mode", ISO Standard 7498-
1:1994, June 1996.
[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, June 2000.
[RFC3954] Claise, B., "Cisco Systems NetFlow Services Export Version
9", RFC 3954, October 2004.
[RFC5101] Claise, B., "Specification of the IP Flow Information
Export (IPFIX) Protocol for the Exchange of IP Traffic
Flow Information", RFC 5101, January 2008.
[RFC5475] Zseby, T., Molina, M., Duffield, N., Niccolini, S., and F.
Raspall, "Sampling and Filtering Techniques for IP Packet
Selection", RFC 5475, March 2009.
[RFC5477] Dietz, T., Claise, B., Aitken, P., Dressler, F., and G.
Carle, "Information Model for Packet Sampling Exports",
RFC 5477, March 2009.
[RFC6313] Claise, B., Dhandapani, G., Aitken, P., and S. Yates,
"Export of Structured Data in IP Flow Information Export
(IPFIX)", RFC 6313, July 2011.
[RFC6325] Perlman, R., Eastlake, D., Dutt, D., Gai, S., and A.
Ghanwani, "Routing Bridges (RBridges): Base Protocol
Specification", RFC 6325, July 2011.
Kashima, et al. Expires March 17, 2012 [Page 17]
Internet-Draft Data Link Information Elements September 2011
Appendix A. Frame Formats in Wide-Area Ethernet Network
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure A-1: IEEE802.1D Frame Format in Customer Bridged Network
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-TAG TCI=0x8100 |C-PCP|C| C-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure A-2: IEEE802.1Q Frame Format in Customer Bridged Network
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0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| S-TAG TCI=0x88a8 |S-PCP|D| S-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure A-3: IEEE802.1ad (no C-Tag) Frame Format in Provider Bridged
Network
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| S-TAG TCI=0x88a8 |S-PCP|D| S-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-TAG TCI=0x8100 |C-PCP|C| C-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure A-4: IEEE802.1ad (C-Tagged) Frame Format in Provider Bridged
Network
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0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| B-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| B-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| B-TAG TCI=0x88a8 |B-PCP|D| B-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| I-TAG TCI=0x88e7 |I-PCP|D|U| Res | I-SID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| I-SID | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-DA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-SA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Length/Type |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure A-5: IEEE802.1ah (no C-Tag) Frame Format in Provider Backbone
Bridged Network
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0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| B-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| B-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| B-TAG TCI=0x88a8 |B-PCP|D| B-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| I-TAG TCI=0x88e7 |I-PCP|D|U| Res | I-SID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| I-SID | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-DA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-SA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | C-TAG TCI=0x8100 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|C-PCP|C| C-VID | Length/Type |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure A-6: IEEE802.1ah (C-Tagged) Frame Format in Provider Backbone
Bridged Network
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Appendix B. Frame Formats in Data Center Network
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| S-TAG TCI=0x88a8 |S-PCP|D| S-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure B-1: IEEE802.1Qbh (S-TAG) Frame Format in Data Center Network
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| S-TAG TCI=0x88a8 |S-PCP|D| S-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-TAG TCI=0x8100 |C-PCP|C| C-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure B-2: IEEE802.1Qbh (S-TAG+C-TAG) Frame Format in Data Center
Network
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0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| E-TAG TCI=0xXXXX |S-PCP|D| Ingress_E-CID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Res| E-CID | Res |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure B-3: IEEE802.1Qbh (E-TAG) Frame Format in Data Center Network
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-DA |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| C-SA |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| E-TAG TCI=0xXXXX |S-PCP|D| Ingress_E-CID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Res| E-CID | Res |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C-TAG TCI=0x8100 |C-PCP|C| C-VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length/Type | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
| |
~ Customer Data ~
~ ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure B-4: IEEE802.1Qbh (E-TAG+C-TAG) Frame Format in Data Center
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Network
Appendix C. Template Formats Example
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Set ID (0x0002) | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Template ID (0x0103) | Field Count (0x0008) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ingressInterface (0x000A) | Field Length (0x0004) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| egressInterface (0x000E) | Field Length (0x0004) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|observationTimeSeconds (0x0142)| Field Length (0x0008) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| dataLinkFrameSize (0x0138) | Field Length (0x0002) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| dataLinkFrameSection (0x013B) | Field Length (0xFF40) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| dataLinkFrameType (0x015B) | Field Length (0x0002) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| sectionOffset (0x015C) | Field Length (0x0002) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|sectionObservedOctets (0x015D) | Field Length (0x0002) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure C-1: Template Format Example
Authors' Addresses
Shingo Kashima
NTT Information Sharing Platform Lab.
Midori-Cho 3-9-11
Musashino-shi, Tokyo 180-8585
Japan
Phone: +81 422 59 3894
Email: kashima@nttv6.net
Kashima, et al. Expires March 17, 2012 [Page 24]
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Kensuke Nakata
NTT Information Sharing Platform Lab.
Midori-Cho 3-9-11
Musashino-shi, Tokyo 180-8585
Japan
Phone: +81 422 59 6958
Email: nakata@nttv6.net
Atsushi Kobayashi
NTT EAST IT Innovation Department
25F 3-20-2 Nishi-shinjuku
Shinjuku-ku, Tokyo 163-1425
Japan
Phone: +81-3-5353-3636
Email: akoba@nttv6.net
Kashima, et al. Expires March 17, 2012 [Page 25]