Introducing CFM in PBB
Maarten Vissers
CFM in PBB/ 2006-11-10
Page 2
CFM in Provider Backbone Bridge
� Draft 3.01 of 802.1ah does not specify CFM details
� Provider backbone networks expected to provide CFM
� Proposal to enhance 802.1ah with CFM specification
� STEP 1: Identification of CFM entities in Peering and Hierarchical PBB Networks
� STEP 2: Identification of CFM MEP and MIP locations
� STEP 3: Locating MEP and MIP functions in PBB’s I- and B-Components
� STEP 4: Decompose PIP and CBP to prepare for CFM addition
� STEP 5: Extending the CIP, PIP, CBP and PBP interface stacks with CFM shims
� STEP 6: Reduced CFM in internal PIP/CBP in IB-BEB
� Proposal based on
� ah-vissers-802.1-pb-pbb-models-1006-02
� ah-vissers-802.1-impact-of-cfm-on-pbb-1106-01
CFM in PBB/ 2006-11-10
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B-VLAN
B-VLAN
Figure 26-1/802.1ah – Peer PBBNS-VLAN, I-Service, B-VLAN and LAN Instances
Operator A Operator B
I-TAG LAN Bbone LAN I-TAG LAN
B-VLAN
B-VLAN I-TAG LAN
A-LAN
S-VLAN Instance I-Service
InstanceB-VLAN Instance LAN
Instance
EACH INSTANCE IS A CFM ENTITY
AB C D
CFM in PBB/ 2006-11-10
Page 4
Figure 26-1/802.1ah – Peer PBBNApplying 802.1ag MEPs and MIPs
I-ServiceInstance
Operator A Operator B
7
B-VLANInstance
LANInstance
MD level is 7 if “Admit Only VLAN-Tagged Frames” applies
MD level is 7; “Admit Only I-Tagged Frames” applies
MD level is 7; “Admit Only I-Tagged Frames” applies
2
7 7
2
7 7 7
Network Operator
Customer
7 77
7 7I-TAG LAN 7 7Bbone LAN 7 7I-TAG LAN
4 Service Provider
7 7
4 4 4 4
7 Bbone LAN
7
2
AB C D
CFM in PBB/ 2006-11-10
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B-VLAN
B-VLAN
Figure 26-1/802.1ah – Hierachical PBBNS-VLAN, I-Service, B-VLAN and LAN Instances
Operator A Operator B
I-TAG LAN
Bbone LANs
I-TAG LAN
I-TAG LAN
A-LAN
S-VLAN Instance
I-Service Instance
B-VLAN Instance
LAN Instance
EACH INSTANCE IS A CFM ENTITY
I-Service Instance
B-VLAN Instance
AB
E
F G
A B E F G
CFM in PBB/ 2006-11-10
Page 6
Figure 26-1/802.1ah – Hierarchical PBBNApplying 802.1ag MEPs and MIPs
I-Service Instance
Operator A Operator B
7
B-VLAN Instance
LAN Instance
7
7 7
4
7 7 7
Customer
7 77
7 7I-TAG LAN 7 7
Bbone LANs
7 7I-TAG LAN
4 Service Provider
7 7
7 7
7 7
7 7 7 7
7 Bbone LAN
I-Service Instance
7 7
B-VLAN Instance
MD level is 7 if “Admit Only VLAN-Tagged Frames” applies
MD level is 7; “Admit Only I-Tagged Frames” applies
Operator A
Service Provider
AB
E
F G
A B E F G
CFM in PBB/ 2006-11-10
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MEPs & MIPs in I-Comp & B-Comp bridge ports(Nodes A and B)
7 7 7
7
7
B-Comp
2
7
4
77
77
77
4 4
2 2
7
7
77
77
77EISS Multiplex
Entity (6.12/.1ag)
(B)(A)EISS
ISS
EISS Instances
ISS
CFM in PBB/ 2006-11-10
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6.7, 9.5(b)
MAC RelayLLC
6.1/.1D
6.x
MS6.1/.1D
6.x
MS6.1/.1D
6.x
Decompose shim 6.8/802.1ah
802.n
6.5
8.5
ISS
ISS
6.7, 9.5(c), AOITF
AOITF: Admit Only I-Tagged Frames
6.7, 9.5(b) 6.7, 9.5(b) 6.7, 9.5(b)
ISS
EISS EISSEISS
ISS ISSISS
MS
MS EISS
6.5ISS
802.nISS
8.5ISS
LLCMS
6.7, 9.5(b)
MAC RelayLLC
802.n
6.5
8.5
ISS
ISS
6.8, 9.5(b)ISS
EISS EISSEISSMS EISS
6.5ISS
802.nISS
8.5ISS
LLCMS
I-Component
Current specification in802.1ah D3.01
shim 6.8 decomposed into:- Nx shim 6.7, 9.5(b)- Nx new shim 6.x “ISS�MS”- Nx shim 6.1/.1D- shim 6.7, 9.5(c) AOITF
ISS ISSISS
note: ISSs may be supported by 6.10 shim (ISS within a system) or by 6.11 shim (ISS by additional technologies)
EISS Instances
ISS Instances = EISS
CFM in PBB/ 2006-11-10
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MAC Relay
6.7, 9.5(b)
MAC Relay LLC
Decompose shim 6.9/802.1ah
802.n
6.5
8.5
ISS
ISS
6.7, 9.5(c), AOITF
AOITF: Admit Only I-Tagged Frames
6.7, 9.5(c)AOITF
6.7, 9.5(c)AOITF
6.7, 9.5(c)AOITF
ISS
EISS EISSEISS
ISS ISSISS MSEISS
6.5ISS
802.nISS
8.5ISS
LLCMS
6.7, 9.5(b)
MAC Relay LLC
802.n
6.5
8.5
ISS
ISS
6.9, 9.5(b)ISS
EISS MSEISS
6.5ISS
802.nISS
8.5ISS
LLCMS
B-Component
Current specification in802.1ah D3.01
shim 6.9 decomposed into:- Nx shim 6.7, 9.5(c) AOITF- MAC relay “EISS � EISS Instances”- shim 6.7, 9.5(c) AOITFEISS
note: ISSs may be supported by 6.10 shim (ISS within a system) or by 6.11 shim (ISS by additional technologies)
EISS Instances
ISS Instances = EISS
CFM in PBB/ 2006-11-10
Page 10
CFM interface stacksfor CIP and PBP
6.7, 9.5(b)
6.9
802.1ad:
6.7, 9.5(b)
6.9
802.1ad:
CIP & PBPCIP & PBP
CFM in PBB/ 2006-11-10
Page 11
Linktrace O.Mux 19.5MAC RelayLLC
6.1/.1D
6.x
MS6.1/.1D
6.x
MS6.1/.1D
6.x
CFM locations and interface stack forProvider Instance Port (PIP)
802.n or internal
6.5 or 6.10
8.5
ISS
ISS
6.7, 9.5(c), AOITF
AOITF: Admit Only I-Tagged Frames
6.7, 9.5(b) 6.7, 9.5(b) 6.7, 9.5(b)
ISS
EISS EISSEISS
ISS ISSISS
MS
MS
I-Component
ISS ISSISS
S-VLAN Instances
I-Service Instance
LAN Instance
Provider Instance Port (PIP)
Down MEPISS
ISS
Queuing 8.6.5/6/7/8
Linktrace O.Mux 19.5
Down MEPs
Port filtering 8.6.1/2/4
UP MP’s 19.2/3
Down MP’s 19.2/3
ISS ISS
EISS
EISS
EISS
EISS
EISS
EISS
ISS
EISS
EISSEISS
EISSEISS
EISSEISS
EISSEISSnote: typically restricted to MIP function
EISS EISSEISS
CFM in PBB/ 2006-11-10
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MAC Relay
CFM locations and interface stack forCustomer Backbone Port (CBP)
AOITF: Admit Only I-Tagged Frames
MAC Relay
LLC
802.n or internal
6.5 or 6.10
8.5
ISS
ISS
6.7, 9.5(c), AOITF
6.7, 9.5(c)AOITF
6.7, 9.5(c)AOITF
6.7, 9.5(c)AOITF
ISS
EISS EISSEISS
ISS ISSISS MS
EISS
B-Component
B-VLAN Instance
LAN Instance
Customer Backbone Port (CBP)
I-Service Instances
Down MEPISS
ISS
Queuing 8.6.5/6/7/8
Linktrace O.Mux 19.5
Up MEPs
Port filtering 8.6.1/2/4
Up MP’s 19.2/3
Down MP’s 19.2/3
ISS ISS
ISS
ISS
EISS
EISS
ISS
EISS
ISSISS
ISSISS
note: not required in IB-BEB when
using a 6.10 shim (Support of the ISS within a system)
EISS
EISS
CFM in PBB/ 2006-11-10
Page 13
MAC Relay
MAC Relay
MAC Relay
6.1/.1D
6.x
MS6.1/.1D
6.x
MS6.1/.1D
6.x
CFM reduction in internal PIP/CBP in IB-BEB
AOITF: Admit Only I-Tagged Frames
6.7, 9.5(b) 6.7, 9.5(b) 6.7, 9.5(b) EISS EISSEISS
ISS ISSISS
MS
I-Component
ISS ISSISS
6.7, 9.5(c)AOITF
6.7, 9.5(c)AOITF
6.7, 9.5(c)AOITF
EISS EISSEISS
ISS ISSISS
B-Component
S-VLAN Instances
I-Service Instance
B-VLAN Instance
InternalPIP&CBP
Up MEPs
Port filtering 8.6.1/2/4ISS ISS
ISS
ISS
ISS
ISSISS
ISSISS
Linktrace O.Mux 19.5
Linktrace O.Mux 19.5
Down MEPs
Port filtering 8.6.1/2/4
UP MP’s 19.2/3
Down MP’s 19.2/3
ISS ISS
EISS
EISS
EISS
EISS
ISS
ISS
ISS
EISSEISS
EISSEISS
EISSEISS
EISSEISS
EISS EISSEISS
ISS ISS
ISS ISS
EISS
EISS
PBP
CIP
S-VLAN Instance MP’s - Typically restricted to MIP function
I-Service Instance MEPs
B-VLAN Instance MEPs