Doc.: IEEE 802.11-04/0981r1 TGs Reference Architecture Considerations September 6, 2004 Tricci So & W. Steven Conner.Slide 1 TGs ESS Mesh System Reference

Tricci So & W. Steven Conner.Slide 1

doc.: IEEE 802.11-04/0981r1

TGs Reference Architecture Considerations

September 6, 2004

TGs ESS Mesh TGs ESS Mesh System ReferenceSystem Reference

Architecture ConsiderationsArchitecture Considerations

TGs ESS Mesh TGs ESS Mesh System ReferenceSystem Reference

Architecture ConsiderationsArchitecture Considerations

Prepared by

Tricci So - Nortel Networks

W. Steven Conner - Intel


doc.: IEEE 802.11-04/0981r1


September 6, 2004

Motivations Motivations Motivations Motivations

•Considering the TGs System Considering the TGs System Architecture Framework. . . . . . Architecture Framework. . . . . .

Where should we start??? Where should we start???


doc.: IEEE 802.11-04/0981r1


September 6, 2004

What Have TGs Five Criteria Said? What Have TGs Five Criteria Said? What Have TGs Five Criteria Said? What Have TGs Five Criteria Said?

6.2 Compatibility6.2 Compatibility

IEEE 802 defines a family of standards. IEEE 802 defines a family of standards. All standardsAll standards shall be in shall be in conformance with the conformance with the IEEE 802.1 Architecture, Management and IEEE 802.1 Architecture, Management and Interworking documents as follows: 802. Overview and Interworking documents as follows: 802. Overview and Architecture, 802.1D, 802.1Q and parts of 802.1fArchitecture, 802.1D, 802.1Q and parts of 802.1f.. If any variances If any variances in conformance emerge, they shall be thoroughly disclosed and in conformance emerge, they shall be thoroughly disclosed and reviewed with 802. Each standard in the IEEE 802 family of reviewed with 802. Each standard in the IEEE 802 family of standards shall include a definition of managed objects, which are standards shall include a definition of managed objects, which are compatible with systems management standards.compatible with systems management standards.

ESS Mesh specifies one possible Wireless Distribution System ESS Mesh specifies one possible Wireless Distribution System (WDS) that behaves in every respect as an IEEE 802.11 (WDS) that behaves in every respect as an IEEE 802.11 Infrastructure Mode network. As such, it is entirely compatible Infrastructure Mode network. As such, it is entirely compatible with the IEEE 802.11 architecture and, with the IEEE 802.11 architecture and, by inference, compatible by inference, compatible with the IEEE 802 architecture, including IEEE 802.1D, IEEE with the IEEE 802 architecture, including IEEE 802.1D, IEEE 802.1Q, and IEEE 802.1F.802.1Q, and IEEE 802.1F.

6.2 Compatibility6.2 Compatibility

IEEE 802 defines a family of standards. IEEE 802 defines a family of standards. All standardsAll standards shall be in shall be in conformance with the conformance with the IEEE 802.1 Architecture, Management and IEEE 802.1 Architecture, Management and Interworking documents as follows: 802. Overview and Interworking documents as follows: 802. Overview and Architecture, 802.1D, 802.1Q and parts of 802.1fArchitecture, 802.1D, 802.1Q and parts of 802.1f.. If any variances If any variances in conformance emerge, they shall be thoroughly disclosed and in conformance emerge, they shall be thoroughly disclosed and reviewed with 802. Each standard in the IEEE 802 family of reviewed with 802. Each standard in the IEEE 802 family of standards shall include a definition of managed objects, which are standards shall include a definition of managed objects, which are compatible with systems management standards.compatible with systems management standards.

ESS Mesh specifies one possible Wireless Distribution System ESS Mesh specifies one possible Wireless Distribution System (WDS) that behaves in every respect as an IEEE 802.11 (WDS) that behaves in every respect as an IEEE 802.11 Infrastructure Mode network. As such, it is entirely compatible Infrastructure Mode network. As such, it is entirely compatible with the IEEE 802.11 architecture and, with the IEEE 802.11 architecture and, by inference, compatible by inference, compatible with the IEEE 802 architecture, including IEEE 802.1D, IEEE with the IEEE 802 architecture, including IEEE 802.1D, IEEE 802.1Q, and IEEE 802.1F.802.1Q, and IEEE 802.1F.


doc.: IEEE 802.11-04/0981r1


September 6, 2004

Why Should We Start Why Should We Start with with

IEEE Std. 802.1D? IEEE Std. 802.1D?

Why Should We Start Why Should We Start with with

IEEE Std. 802.1D? IEEE Std. 802.1D?


doc.: IEEE 802.11-04/0981r1


September 6, 2004

What is IEEE 802.1D MAC Bridge? What is IEEE 802.1D MAC Bridge? What is IEEE 802.1D MAC Bridge? What is IEEE 802.1D MAC Bridge?

IEEE Std 802.1D-2004, 1.1:IEEE Std 802.1D-2004, 1.1:IEEE 802 Local Area Networks (or IEEE 802 Local Area Networks (or LANs; see 3.4) of all types can be LANs; see 3.4) of all types can be connected together using MAC connected together using MAC Bridges. The Bridged Local Area Bridges. The Bridged Local Area Network created Network created allows the allows the Interconnection of stations as if they Interconnection of stations as if they were attached to a single LANwere attached to a single LAN, even , even if they are attached to separate if they are attached to separate LANs each with its own independent LANs each with its own independent MAC. MAC. A A MAC Bridge operates below MAC Bridge operates below the MAC Service Boundary, and is the MAC Service Boundary, and is transparent to protocols operating transparent to protocols operating above this boundary, in the Logical above this boundary, in the Logical Link Control (LLC) sublayer or Link Control (LLC) sublayer or Network LayerNetwork Layer (ISO/IEC 7498- (ISO/IEC 7498-1:1994). . . . .1:1994). . . . .

IEEE Std 802.1D-2004, 1.1:IEEE Std 802.1D-2004, 1.1:IEEE 802 Local Area Networks (or IEEE 802 Local Area Networks (or LANs; see 3.4) of all types can be LANs; see 3.4) of all types can be connected together using MAC connected together using MAC Bridges. The Bridged Local Area Bridges. The Bridged Local Area Network created Network created allows the allows the Interconnection of stations as if they Interconnection of stations as if they were attached to a single LANwere attached to a single LAN, even , even if they are attached to separate if they are attached to separate LANs each with its own independent LANs each with its own independent MAC. MAC. A A MAC Bridge operates below MAC Bridge operates below the MAC Service Boundary, and is the MAC Service Boundary, and is transparent to protocols operating transparent to protocols operating above this boundary, in the Logical above this boundary, in the Logical Link Control (LLC) sublayer or Link Control (LLC) sublayer or Network LayerNetwork Layer (ISO/IEC 7498- (ISO/IEC 7498-1:1994). . . . .1:1994). . . . .

IEEE Std 802.1D-2004, Figure 7-3: Bridge ArchitectureIEEE Std 802.1D-2004, Figure 7-3: Bridge ArchitectureIEEE Std 802.1D-2004, Figure 7-3: Bridge ArchitectureIEEE Std 802.1D-2004, Figure 7-3: Bridge Architecture

(ISS) (ISS)


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September 6, 2004

What does IEEE 802.11 Say About DS & What does IEEE 802.11 Say About DS & ESS? ESS?

What does IEEE 802.11 Say About DS & What does IEEE 802.11 Say About DS & ESS? ESS?

IEEE Std 802.11-1999, 3.20 & IEEE Std 802.11-1999, 3.20 & 3.25:3.25:

3.20 distribution system (DS):3.20 distribution system (DS): A A system used to interconnect a set of system used to interconnect a set of basic service sets (BSSs) and basic service sets (BSSs) and integrated local area networks (LANs) integrated local area networks (LANs) to create an extended service set to create an extended service set (ESS). (ESS).

3.25 extended service set (ESS):3.25 extended service set (ESS): A A set of one or more interconnected set of one or more interconnected basic service sets (BSSs) and basic service sets (BSSs) and integrated local area networks (LANs) integrated local area networks (LANs) that appears as a that appears as a single BSSsingle BSS to the to the logical link control layer at any station logical link control layer at any station associated with one of those BSSs.associated with one of those BSSs.

IEEE Std 802.11-1999, 3.20 & IEEE Std 802.11-1999, 3.20 & 3.25:3.25:

3.20 distribution system (DS):3.20 distribution system (DS): A A system used to interconnect a set of system used to interconnect a set of basic service sets (BSSs) and basic service sets (BSSs) and integrated local area networks (LANs) integrated local area networks (LANs) to create an extended service set to create an extended service set (ESS). (ESS).

3.25 extended service set (ESS):3.25 extended service set (ESS): A A set of one or more interconnected set of one or more interconnected basic service sets (BSSs) and basic service sets (BSSs) and integrated local area networks (LANs) integrated local area networks (LANs) that appears as a that appears as a single BSSsingle BSS to the to the logical link control layer at any station logical link control layer at any station associated with one of those BSSs.associated with one of those BSSs.

IEEE Std 802.11-1999, Figure 3: Extended Service SetIEEE Std 802.11-1999, Figure 3: Extended Service SetIEEE Std 802.11-1999, Figure 3: Extended Service SetIEEE Std 802.11-1999, Figure 3: Extended Service Set


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September 6, 2004

What “More” STD 802.11 Spec What “More” STD 802.11 Spec Says? Says?

What “More” STD 802.11 Spec What “More” STD 802.11 Spec Says? Says?

5.1.1.4 Interaction with 5.1.1.4 Interaction with

otherother IEEE 802 Layers IEEE 802 Layers

IEEE 802.11 is required to appear to IEEE 802.11 is required to appear to

higher layers [logical link control higher layers [logical link control

(LLC)] as a current style IEEE 802 (LLC)] as a current style IEEE 802

LAN. This requires that the IEEE LAN. This requires that the IEEE

802.11 network 802.11 network handle station handle station

mobilitymobility within the MAC sublayer. within the MAC sublayer. To To

meet reliability assumptions (that meet reliability assumptions (that

LLC makes about lower layers), it is LLC makes about lower layers), it is

necessary for IEEE 802.11 to necessary for IEEE 802.11 to

incorporate functionality that is incorporate functionality that is

untraditional for MAC sublayers.untraditional for MAC sublayers.

5.1.1.4 Interaction with 5.1.1.4 Interaction with

otherother IEEE 802 Layers IEEE 802 Layers

IEEE 802.11 is required to appear to IEEE 802.11 is required to appear to

higher layers [logical link control higher layers [logical link control

(LLC)] as a current style IEEE 802 (LLC)] as a current style IEEE 802

LAN. This requires that the IEEE LAN. This requires that the IEEE

802.11 network 802.11 network handle station handle station

mobilitymobility within the MAC sublayer. within the MAC sublayer. To To

meet reliability assumptions (that meet reliability assumptions (that

LLC makes about lower layers), it is LLC makes about lower layers), it is

necessary for IEEE 802.11 to necessary for IEEE 802.11 to

incorporate functionality that is incorporate functionality that is

untraditional for MAC sublayers.untraditional for MAC sublayers.IEEE Std 802.1D-2004, Figure 7-3: Bridge ArchitectureIEEE Std 802.1D-2004, Figure 7-3: Bridge ArchitectureIEEE Std 802.1D-2004, Figure 7-3: Bridge ArchitectureIEEE Std 802.1D-2004, Figure 7-3: Bridge Architecture

(ISS) (ISS)


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September 6, 2004

Do We See Any Similarity Between Do We See Any Similarity Between

MAC Bridge & ESS Mesh? MAC Bridge & ESS Mesh?

Do We See Any Similarity Between Do We See Any Similarity Between

MAC Bridge & ESS Mesh? MAC Bridge & ESS Mesh?

MACMAC

LLCLLC

MACMAC MACMAC

RELAYRELAY

MACMAC

LLCLLC MAC Service MAC Service User User

MAC Service MAC Service Provider Provider

MAC Bridge MAC Bridge ReferenceReference

IEEE Std 802.1D-2004, section 6.IEEE Std 802.1D-2004, section 6.MAC Bridges interconnect the separate IEEE 802 MAC Bridges interconnect the separate IEEE 802 LANs that compose a Bridged Local Area LANs that compose a Bridged Local Area Network by Network by relayingrelaying and and filteringfiltering frames frames between the separate MACs of the bridged LANs. between the separate MACs of the bridged LANs. . . .. . .

IEEE Std 802.1D-2004, section 6.IEEE Std 802.1D-2004, section 6.MAC Bridges interconnect the separate IEEE 802 MAC Bridges interconnect the separate IEEE 802 LANs that compose a Bridged Local Area LANs that compose a Bridged Local Area Network by Network by relayingrelaying and and filteringfiltering frames frames between the separate MACs of the bridged LANs. between the separate MACs of the bridged LANs. . . .. . .

802.11s802.11sMeshMesh

Reference obtained from Reference obtained from Std. 802.1D Std. 802.1D Figure 6-1.Figure 6-1.

Reference obtained from Reference obtained from Std. 802.1D Std. 802.1D Figure 6-1.Figure 6-1.

Wireless Wireless Distributed Distributed

SystemSystem

802.11802.11LANLAN

Wired Wired Distributed Distributed

SystemSystem


doc.: IEEE 802.11-04/0981r1


September 6, 2004

What Does IEEE 802 Say About What Does IEEE 802 Say About 802.1D Support Requirements from 802.1D Support Requirements from

802.11?802.11?

What Does IEEE 802 Say About What Does IEEE 802 Say About 802.1D Support Requirements from 802.1D Support Requirements from

802.11?802.11? IEEE Std. 802.1D-2004, 6.5 Support of the IEEE Std. 802.1D-2004, 6.5 Support of the Internal Sublayer Internal Sublayer Service (ISS)Service (ISS) by specific MAC procedures . . . by specific MAC procedures . . .

6.5.4 Support by IEEE Std 802.11 (Wireless LANs)6.5.4 Support by IEEE Std 802.11 (Wireless LANs)

A A BridgeBridge to an IEEE 802.11 LAN shall connect to an IEEE 802.11 to an IEEE 802.11 LAN shall connect to an IEEE 802.11 PortalPortal, which in turn , which in turn connects to an IEEE 802.11 Distribution System. For the purpose of bridging, the service connects to an IEEE 802.11 Distribution System. For the purpose of bridging, the service interface presented at the interface presented at the PortalPortal is is identicalidentical to the service interface presented at the IEEE to the service interface presented at the IEEE 802.11 MAC SAP. 802.11 MAC SAP. An instance of an 8802-11 Distribution System can be An instance of an 8802-11 Distribution System can be implemented from IEEE 802 LAN components.implemented from IEEE 802 LAN components. IEEE 802.11 STAs attach to the IEEE 802.11 STAs attach to the Distribution System via an IEEE 802.11 Access Point . . . . . Distribution System via an IEEE 802.11 Access Point . . . . .

On receipt of an On receipt of an M_UNITDATA.request primitiveM_UNITDATA.request primitive, the , the portalportal constructs a MAC Service constructs a MAC Service Data UnitData Unit and passes it to the MAC Data service for transmission using the parameters and passes it to the MAC Data service for transmission using the parameters supplied . . .supplied . . .

On receipt of a valid MAC Service Data Unit, the On receipt of a valid MAC Service Data Unit, the portalportal generates an generates an M_UNITDATA.indication primitiveM_UNITDATA.indication primitive with parameter values derived from the frame with parameter values derived from the frame fields . . . .fields . . . .On the data plane, 802.11 Interfacing with other 802 LANs

through the support of Internal Sublayer Service (ISS) Internal Sublayer Service (ISS)

On the data plane, 802.11 Interfacing with other 802 LANs through the support of Internal Sublayer Service (ISS) Internal Sublayer Service (ISS)


doc.: IEEE 802.11-04/0981r1


September 6, 2004

What Is 802.1D Internal Sublayer What Is 802.1D Internal Sublayer Service?Service?

What Is 802.1D Internal Sublayer What Is 802.1D Internal Sublayer Service?Service?

IEEE Std. 802.1D-2004, 6.4 IEEE Std. 802.1D-2004, 6.4 Internal Sublayer ServiceInternal Sublayer Service provided within the MAC Bridge . . . provided within the MAC Bridge . . .

The The Internal Sublayer Service (ISS)Internal Sublayer Service (ISS) provided by a MAC entity to the MAC provided by a MAC entity to the MAC Relay Entity within a Bridge is that provided by the individual MAC for the LAN Relay Entity within a Bridge is that provided by the individual MAC for the LAN Port. This observes the appropriate MAC procedures and protocol for the LAN to Port. This observes the appropriate MAC procedures and protocol for the LAN to which it attaches. which it attaches. No control framesNo control frames, i.e., frames that do not convey MAC user , i.e., frames that do not convey MAC user data, are forwarded on any LAN other than that on which they originated.data, are forwarded on any LAN other than that on which they originated.

The The Internal Sublayer ServiceInternal Sublayer Service is derived from the is derived from the MAC ServiceMAC Service defined by defined by ISO/IEC 15802-1 by augmenting that specification with elements necessary to the ISO/IEC 15802-1 by augmenting that specification with elements necessary to the performance of the relay function. . . . . Two parameters are added to the list of performance of the relay function. . . . . Two parameters are added to the list of parameters associated with the parameters associated with the MA_UNITDATA.requestMA_UNITDATA.request and and MA-MA-UNITDATA.indicationUNITDATA.indication primitives defined by ISO/IEC 15802-1. These are primitives defined by ISO/IEC 15802-1. These are frame_typeframe_type and and frame_check_sequenceframe_check_sequence. The definition of the Internal . The definition of the Internal Sublayer Service does Sublayer Service does NOTNOT add any new service primitives to those defined by add any new service primitives to those defined by the LAN MAC Service Definition. the LAN MAC Service Definition.


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September 6, 2004

ISS Service Mappings for 802.11 MACISS Service Mappings for 802.11 MAC ISS Service Mappings for 802.11 MACISS Service Mappings for 802.11 MAC

M_UNITDATA.request(M_UNITDATA.request(frame_typeframe_type, , mac_actionmac_action, , DADA, , SASA, , Routing InformationRouting Information, , MSDUMSDU, , user_priorityuser_priority, , access_priorityaccess_priority, , FCSFCS))

M_UNITDATA.indication(M_UNITDATA.indication(frame_typeframe_type, , mac_actionmac_action, , DADA, , SASA, , Routing InformationRouting Information, , MSDUMSDU, , user_priorityuser_priority, , access_priorityaccess_priority, , FCSFCS))

DADA

SASA

MSDUMSDU

FCSFCS

802.11 Frame Fields802.11 Frame Fields

user_data_frameuser_data_frame

Request_with_no_responseRequest_with_no_response

Fixed Mapping Fixed Mapping

Refer to IEEE Std 802.1D-2004: Refer to IEEE Std 802.1D-2004: 6.5.46.5.4 Support by IEEE Std 802.11 (Wireless LAN) Support by IEEE Std 802.11 (Wireless LAN)Refer to IEEE Std 802.1D-2004: Refer to IEEE Std 802.1D-2004: 6.5.46.5.4 Support by IEEE Std 802.11 (Wireless LAN) Support by IEEE Std 802.11 (Wireless LAN)

To Be DeterminedTo Be Determined


doc.: IEEE 802.11-04/0981r1


September 6, 2004

What Does 802.1D MAC Bridge Look Like What Does 802.1D MAC Bridge Look Like

in term of 802.3 and 802.11 Protocol in term of 802.3 and 802.11 Protocol Stack?Stack?

What Does 802.1D MAC Bridge Look Like What Does 802.1D MAC Bridge Look Like

in term of 802.3 and 802.11 Protocol in term of 802.3 and 802.11 Protocol Stack?Stack?

LLC LLCMACService

(ISS)

Port

alIS

S

MAC Relay Entity

802.1DClause6.5.1

802.1DClause6.5.4

802.3 802.11

802.3 LAN 802.11 LAN

The MAC Sublayer in an 802.1D MAC BridgeThe MAC Sublayer in an 802.1D MAC BridgeIEEE 802.1D 6.5.4:IEEE 802.1D 6.5.4:A A BridgeBridge to an IEEE 802.11 LAN shall to an IEEE 802.11 LAN shall connect to an IEEE 802.11 connect to an IEEE 802.11 PortalPortal, , which in turn connects to an IEEE which in turn connects to an IEEE 802.11 Distribution System. For the 802.11 Distribution System. For the purpose of bridging, the service purpose of bridging, the service interface presented at the interface presented at the PortalPortal is is identicalidentical to the service interface to the service interface presented at the IEEE presented at the IEEE 802.11802.11 MAC MAC SAP. SAP. An instance of an 8802-11 An instance of an 8802-11 Distribution SystemDistribution System can be can be implemented from IEEE 802 LAN implemented from IEEE 802 LAN components.components. IEEE 802.11 STAs IEEE 802.11 STAs attach to the Distribution System via attach to the Distribution System via an IEEE 802.11 Access Pointan IEEE 802.11 Access Point

IEEE 802.1D 6.5.4:IEEE 802.1D 6.5.4:A A BridgeBridge to an IEEE 802.11 LAN shall to an IEEE 802.11 LAN shall connect to an IEEE 802.11 connect to an IEEE 802.11 PortalPortal, , which in turn connects to an IEEE which in turn connects to an IEEE 802.11 Distribution System. For the 802.11 Distribution System. For the purpose of bridging, the service purpose of bridging, the service interface presented at the interface presented at the PortalPortal is is identicalidentical to the service interface to the service interface presented at the IEEE presented at the IEEE 802.11802.11 MAC MAC SAP. SAP. An instance of an 8802-11 An instance of an 8802-11 Distribution SystemDistribution System can be can be implemented from IEEE 802 LAN implemented from IEEE 802 LAN components.components. IEEE 802.11 STAs IEEE 802.11 STAs attach to the Distribution System via attach to the Distribution System via an IEEE 802.11 Access Pointan IEEE 802.11 Access Point

MAC Independent

Functions

MAC DependentFunctions

MAC SpecificFunctions

802.11 Portal is part of the ISS802.11 Portal is part of the ISS802.11 Portal is part of the ISS802.11 Portal is part of the ISSRefer to IEEE Std 802.1D Figure 7-3 Bridge ArchitectureRefer to IEEE Std 802.1D Figure 7-3 Bridge ArchitectureRefer to IEEE Std 802.1D Figure 7-3 Bridge ArchitectureRefer to IEEE Std 802.1D Figure 7-3 Bridge Architecture

MACService

Part of theDistributionSystem (DS)


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September 6, 2004

What Does 802.11 Say about What Does 802.11 Say about Portal and IEEE 802 LAN-based DS?Portal and IEEE 802 LAN-based DS?

What Does 802.11 Say about What Does 802.11 Say about Portal and IEEE 802 LAN-based DS?Portal and IEEE 802 LAN-based DS?

IEEE Std 802.11 5.2.4:IEEE Std 802.11 5.2.4: Integration with wired Integration with wired LANsLANs

All data from non-IEEE 802.11 All data from non-IEEE 802.11 LANs enter the IEEE 802.11 LANs enter the IEEE 802.11 architecture via a portal. The architecture via a portal. The portal provides logical integration portal provides logical integration between the IEEE 802.11 between the IEEE 802.11 architecture and existing wired architecture and existing wired LANs. LANs. It is possible for one device It is possible for one device to offer both the functions of an AP to offer both the functions of an AP and a portal; this could be the case and a portal; this could be the case when a DS is implemented from when a DS is implemented from IEEE 802 LAN components.IEEE 802 LAN components.

IEEE Std 802.11 5.2.4:IEEE Std 802.11 5.2.4: Integration with wired Integration with wired LANsLANs

All data from non-IEEE 802.11 All data from non-IEEE 802.11 LANs enter the IEEE 802.11 LANs enter the IEEE 802.11 architecture via a portal. The architecture via a portal. The portal provides logical integration portal provides logical integration between the IEEE 802.11 between the IEEE 802.11 architecture and existing wired architecture and existing wired LANs. LANs. It is possible for one device It is possible for one device to offer both the functions of an AP to offer both the functions of an AP and a portal; this could be the case and a portal; this could be the case when a DS is implemented from when a DS is implemented from IEEE 802 LAN components.IEEE 802 LAN components.

LLC LLCMACService

ISS

(Por

tal)IS

S MAC Relay Entity

802.1DClause6.5.1

802.1DClause6.5.4

802.3 802.11

802.3 LAN 802.11 LAN

The MAC Sublayer in an 802.1D MAC BridgeThe MAC Sublayer in an 802.1D MAC Bridge

MAC Independent

Functions

MAC DependentFunctions

MAC SpecificFunctions

MACService

Part of theDistributionSystem (DS)

IEEE 802.1D and 802.11 Specifications are very consistent with the entire 802 network architecture today. . .

IEEE 802.1D and 802.11 Specifications are very consistent with the entire 802 network architecture today. . .


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802.11 LAN (BSSs) - ESS802.11 LAN (BSSs) - ESS

802.11s ESS Mesh 802.11s ESS Mesh Data Plane Reference Architecture Data Plane Reference Architecture

Considerations Considerations

802.11s ESS Mesh 802.11s ESS Mesh Data Plane Reference Architecture Data Plane Reference Architecture

Considerations Considerations

802.11 ESS Mesh 802.11 ESS Mesh

AccesAccess I/Fs I/F

MeshMeshI/FI/F

Mesh APMesh APM2M2

M1

M2

M3

MACMAC

LLCLLC

MESHMESHRELAYRELAY

MACMAC MACMAC MACMAC MACMAC MACMAC MACMAC

AccesAccess I/Fs I/F

MeshMeshI/FI/F

Mesh APMesh APM3M3

MeshMeshI/FI/F

Mesh PointMesh PointM1M1

MACMAC

LLCLLC

802.11 LAN802.11 LAN 802.11 LAN802.11 LAN802.11 ESS Mesh802.11 ESS Mesh

802.11 ESS Mesh Network802.11 ESS Mesh Network802.11 ESS Mesh Network802.11 ESS Mesh Network

802.11 ESS Mesh Data Plane Reference Architecture802.11 ESS Mesh Data Plane Reference Architecture802.11 ESS Mesh Data Plane Reference Architecture802.11 ESS Mesh Data Plane Reference Architecture

MESHMESHRELAYRELAY

MESHMESHRELAYRELAY

Note:Note: The interface above represents a “logical” The interface above represents a “logical” configuration and DOES NOT refer to a “physical” configuration and DOES NOT refer to a “physical” configuration, i.e. the configuration is agnostic to single or configuration, i.e. the configuration is agnostic to single or multiple radios mesh AP system.multiple radios mesh AP system.

Note:Note: The interface above represents a “logical” The interface above represents a “logical” configuration and DOES NOT refer to a “physical” configuration and DOES NOT refer to a “physical” configuration, i.e. the configuration is agnostic to single or configuration, i.e. the configuration is agnostic to single or multiple radios mesh AP system.multiple radios mesh AP system.

Documents

Doc.: IEEE 802.11-04/0981r1 TGs Reference Architecture Considerations September 6, 2004 Tricci So & W. Steven Conner.Slide 1 TGs ESS Mesh System Reference