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© UNIVERSITY of NEW HAMPSHIRE INTEROPERABILITY LABORATORY
IEEE 802.1ad Provider BridgesIEEE 802.1ad Provider Bridges
Henry HeUNH-IOL Bridge Functions
Consortium
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Presentation goalsPresentation goalsPresentation goalsPresentation goals
•High level understanding
•What it can do for the customer
•What it can do for the Service Provider
•Pros and cons
•Speak intelligently about it…
•High level understanding
•What it can do for the customer
•What it can do for the Service Provider
•Pros and cons
•Speak intelligently about it…
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
What is needed?What is needed?What is needed?What is needed?
• Extending Bridged LANs
• Preserve Bridged LAN properties
• Quality of Service
• Sum it up: Something that acts like a Bridged LAN
• Extending Bridged LANs
• Preserve Bridged LAN properties
• Quality of Service
• Sum it up: Something that acts like a Bridged LAN
Lancast Corp.San Francisco, CA
Lancast Corp.Durham, NH
Lancast Corp.San Diego, CA
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Why Provider Bridges?Why Provider Bridges?Why Provider Bridges?Why Provider Bridges?
•Provider Bridges are Bridges
•Provider Bridges inherit Bridge properties
•Provider Bridged Network not only acts like a Bridged LAN, it is a Bridged LAN
•“Bridges” are simple
•Lower CAPEX and OPEX than routers in general
•Provider Bridges are Bridges
•Provider Bridges inherit Bridge properties
•Provider Bridged Network not only acts like a Bridged LAN, it is a Bridged LAN
•“Bridges” are simple
•Lower CAPEX and OPEX than routers in general
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Who standardizes it?Who standardizes it?Who standardizes it?Who standardizes it?
•IEEE 802.1 Working Group•Amendment to IEEE Std. 802.1Q•Incorporated into IEEE Std. 802.1Q-2005•Similar: Q-in-Q, VLAN Stacking, 802.1Q tunneling
•IEEE 802.1 Working Group•Amendment to IEEE Std. 802.1Q•Incorporated into IEEE Std. 802.1Q-2005•Similar: Q-in-Q, VLAN Stacking, 802.1Q tunneling
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
What is it trying to do?What is it trying to do?What is it trying to do?What is it trying to do?
• Private Ethernet connectivity over a shared Bridged LAN
• Private Ethernet connectivity over a shared Bridged LAN
Lancast CorpLancast Corp
Pacific NetPacific Net SE TelcoSE Telco
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
What is the scope?What is the scope?What is the scope?What is the scope?
• Functionality wise…– Transparency
– Traffic segregation
– Service identification
– Customer interfacing
– Priority selection
– Access protection
• Demarcation wise…– from UNI to UNI
• Functionality wise…– Transparency
– Traffic segregation
– Service identification
– Customer interfacing
– Priority selection
– Access protection
• Demarcation wise…– from UNI to UNI
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
The equipmentsThe equipmentsThe equipmentsThe equipments
Provider Bridged Network
S-VLANBridge
S-VLANBridge
S-VLANBridge
S-VLANBridge
S-VLANBridge
ProviderEdge
Bridge
ProviderEdge
Bridge
ProviderEdge
Bridge
Lancast Corp.Equipment
orLAN
Lancast Corp.Equipment
orLAN
Lancast Corp.Equipment
orLAN
Pacific NetEquipment
orLAN
Pacific NetEquipment
orLAN
SE TelcoEquipment
orLAN
SE TelcoEquipment
orLAN
SE TelcoEquipment
orLAN
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
The customer’s viewThe customer’s viewThe customer’s viewThe customer’s view
Lancast CorpLancast Corp
Pacific NetPacific Net SE TelcoSE Telco
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
The provider’s viewThe provider’s viewThe provider’s viewThe provider’s view
S-VLANBridge
S-VLANBridge
ProviderEdge
Bridge
ProviderEdge
Bridge
ProviderEdge
Bridge
S-VLANBridge
S-VLANBridge
S-VLANBridge
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
How does it work?How does it work?How does it work?How does it work?
SMAC = PC
DMAC = RTR1
SIP = PC
DIP = Server
SMAC = PC
DMAC = RTR1
SIP = PC
DIP = Server
SMAC = RTR1
DMAC = RTR2
SIP = PC
DIP = Server
VID = 100
SMAC = RTR1
DMAC = RTR2
SIP = PC
DIP = Server
VID = 100
SMAC = RTR2
DMAC = Server
SIP = PC
DIP = Server
Server
PC
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
How does the PBN do that?How does the PBN do that?How does the PBN do that?How does the PBN do that?
S-VLANBridge
S-VLANBridge
ProviderEdge
Bridge
ProviderEdge
Bridge
ProviderEdge
Bridge
S-VLANBridge
S-VLANBridge
S-VLANBridge
SMAC = RTR1
DMAC = RTR2
SIP = PC
DIP = Server
VID = 100
SMAC = RTR1
DMAC = RTR2
SIP = PC
DIP = Server
VID = 100
SVID = 1000
FCS
SMAC = RTR1
DMAC = RTR2
SIP = PC
DIP = Server
VID = 100
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Inside the PBN…Inside the PBN…Inside the PBN…Inside the PBN…
S-VLANBridge
SMAC = RTR1
DMAC = RTR2
SIP = PC
DIP = Server
VID = 100
Port 2Port 2Port 2Port 2
Port 1Port 1Port 1Port 1
Port 3Port 3Port 3Port 3
FID Destination MAC SVID Port
111 00 AC F1 DE 28 C1
1
112 2
:
:
:
:
:
:
999 00 2A 1C 9D A0 EE
3
RTR2
Filtering DatabaseFiltering DatabaseFiltering DatabaseFiltering Database
S-VLANBridge Port 2Port 2Port 2Port 2
Port 1Port 1Port 1Port 1
Port 3Port 3Port 3Port 3
FID Destination MAC SVID Port
111 00 FE A1 22 31 D2
2000 2
112 1000 2
:
:
:
:
:
:
999 00 E1 FA E8 41 C2
1000 3
RTR2
Filtering DatabaseFiltering DatabaseFiltering DatabaseFiltering Database
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Noteworthy detailsNoteworthy detailsNoteworthy detailsNoteworthy details
•New Ethertype
•Reserved MAC address for PBN Spanning Tree
•PCP and Drop Eligible
•Frame expansion needed (802.3as)
•New Ethertype
•Reserved MAC address for PBN Spanning Tree
•PCP and Drop Eligible
•Frame expansion needed (802.3as)
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Port-based Service InterfacePort-based Service InterfacePort-based Service InterfacePort-based Service Interface
S-VLAN Bridge
Untagged
C-VLAN 10C-VLAN 20
Untagged
C-VLAN 50
C-VLAN 60
Untagged
C-VLAN 50
C-VLAN 60
Provider BridgedNetwork
Service Instance determinedby physical port
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
C-tagged Service InterfaceC-tagged Service InterfaceC-tagged Service InterfaceC-tagged Service Interface
Provider Edge Bridge
Untagged
C-VLAN 10C-VLAN 20
Provider BridgedNetwork
Service Instance determinedby C-VLAN ID
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
S-tagged Service InterfaceS-tagged Service InterfaceS-tagged Service InterfaceS-tagged Service Interface
S-VLAN Bridge
Untagged
S-VLAN 1000S-VLAN 2000
Provider BridgedNetwork
Service Instance determinedby S-VLAN ID
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Deployment scenariosDeployment scenariosDeployment scenariosDeployment scenarios
Provider BridgedNetwork
4094 Service Instances4094 Service Instances4094 Service Instances4094 Service Instances
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Deployment scenariosDeployment scenariosDeployment scenariosDeployment scenarios
Provider BridgedNetwork
Provider BridgedNetwork
4094 Service Instances4094 Service Instances4094 Service Instances4094 Service Instances
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Deployment scenariosDeployment scenariosDeployment scenariosDeployment scenarios
Provider BridgedNetwork
Provider BridgedNetwork
Provider BackboneNetwork
(IEEE P802.1ah)
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Deployment scenariosDeployment scenariosDeployment scenariosDeployment scenarios
Provider BridgedNetwork
Provider BridgedNetwork
IETF L2VPN
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Pros and ConsPros and ConsPros and ConsPros and Cons
•Pros– A true Bridged LAN service (as opposed to
emulated LAN)
– Based on well standardized and well deployed technologies (namely, .1Q)
•Cons– 4094 service instances are not enough
– Managing 4094 service instances
•Pros– A true Bridged LAN service (as opposed to
emulated LAN)
– Based on well standardized and well deployed technologies (namely, .1Q)
•Cons– 4094 service instances are not enough
– Managing 4094 service instances
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
SummarySummarySummarySummary
•It is a Bridged LAN (not emulated)
•Based on simple and well established technologies (.1Q)
•Inherits Bridging characteristics
•IEEE Std. 802.1ad
•Limited to 4094 service instances
•Not an encapsulation protocol
•It is a Bridged LAN (not emulated)
•Based on simple and well established technologies (.1Q)
•Inherits Bridging characteristics
•IEEE Std. 802.1ad
•Limited to 4094 service instances
•Not an encapsulation protocol
UNIVERSITY of NEW HAMPSHIRE
INTEROPERABILITY LABORATORY
Carrier Ethernet Summit – San Diego, CA
Q&AQ&AQ&AQ&A