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

Page 3

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

Page 5

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

Page 7

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

Page 8

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

Page 9

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

Page 12

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