Ethernet OAM Tutorial

163 Pages·2007·4.14 MB·English

Ethernet OAM Tutorial
Srinath Beldona [email protected]
Technical Marketing Engineering, Edge Routing Business Unit
Yogesh Jiandani [email protected]
Consulting Systems Engineer, India and SAARC Region
1
Presentation_ID ©2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential
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Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 2
Agenda
(cid:131) Review of Metro Ethernet technologies & Ethernet OAM
(cid:131) Manageability to the Customer Premises
(cid:131) Ethernet OAM Overview
(cid:131) Ethernet OAM Deployment Overview
(cid:131) 802.1ag Connectivity Fault Management for Services
Management
(cid:131) 802.3ah for Ethernet in the First Mile for Connectivity
Verification
(cid:131) Metro Ethernet Forum MEF-16 E-LMI for Rapid Service
Deployment
(cid:131) Ethernet OAM Interworking
(cid:131) Summary
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 3
Metro Ethernet – Deployment scenarios
IInntteeggrraatteedd SSyysstteemm
Full Service Efficient Large Scale Intelligent Multi-service Intelligent Efficient Full Service
Customer Access Aggregation Edge Core Edge Access Customer
Equipment Equipment
SSii
User Facing Provider Edge (U-PE)
Metro C
Metro A U-PE
PE-AGG
Hub & 10/100/
10/100/ GE Ring SSii Spoke 1000 Mbps
1000 Mbps
P P U-PE
N-PE
MMPPLLSS//IIPP//TTDDMM
10/100/
Metro B
1000 Mbps
N-PE
P P SONET/SDH
1
DCWDWDMM/ Ring 1000 0/100/
M
b
p
s
N-PE
U-PE U-PE Metro D
Internet
Network Facing Provider Edge (N-PE)
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 4
Metro Ethernet—Service Descriptions
CC
EEtthheerrnneett WWiirree SSeerrvviiccee——EEWWSS
SP
((LLiikkee aa LLeeaasseedd LLiinnee)) AA
Network
BB
CC
EEtthheerrnneett RReellaayy SSeerrvviiccee——EERRSS
SP
((LLiikkee FFrraammee RReellaayy)) AA Network
BB
EEtthheerrnneett MMuullttiippooiinntt SSeerrvviiccee——EEMMSS
SP
((EEnnhhaanncceedd wwiitthh VVPPLLSS,, PPoorrtt MMaappppiinngg)) Network
EEtthheerrnneett RReellaayy MMuullttiippooiinntt SSeerrvviiccee——EERRMMSS
SP
((NNeeww sseerrvviiccee wwhheerree tthhee SSPP cclloouudd aaccttss lliikkee Network
aa LLAANN,, VVLLAANN MMaappppiinngg))
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 5
IETF Terminology for Metro Ethernet
CCCooorrreee DDDeeevvviiiccceee (((PPP)))
FFrraammee FFoorrwwaarrddiinngg,, CCoonnggeessttiioonn MMaannaaggeemmeenntt
P
Emulated
VC EEEmmmuuulllaaattteeeddd VVVCCC EEEnnndddpppoooiiinnnttt (((NNNeeetttwwwooorrrkkk PPPEEE,,, NNN---PPPEEE))) *** specific for
(Pseudowire) MMPPLLSS//LL22TTPPvv33 ppsseeuuddoowwiirree eennccaappssuullaattiioonn,, LL22 IInntteerrwwoorrkkiinngg,, Ethernet:
IIPP SSeerrvviiccee IInntteeggrraattiioonn,, CCoonnggeessttiioonn MMaannaaggeemmeenntt,, LL33VVPPNN VPLS
N-PE
IInntteerrccoonnnneeccttiioonn ((ffoorr PPEEss ssuuppppoorrttiinngg tthhaatt ffuunnccttiioonn)) Bridging
RReeppllaacceess PPEE--PPOOPP
AAAggggggrrreeegggaaatttiiiooonnn DDDeeevvviiiccceee (((PPPEEE---AAAGGGGGG)))
Extension
VC PE-AGG TTrraaffffiicc AAggggrreeggaattiioonn aanndd CCoonnggeessttiioonn MMaannaaggeemmeenntt
((NNoottee:: PPEE--AAGGGGss aanndd EExxtteennssiioonn VVCC’’ss aarree ffoorrmmaallllyy iiddeennttiiffiieedd iinn SSwwiittcchheedd EEtthheerrnneett
AAcccceessss DDoommaaiinnss,, aalltthhoouugghh tthhee ffuunnccttiioonnss eexxiisstt iinn FFRR aanndd AATTMM nneettwwoorrkkss aass wweellll..))
U-PE AAAttttttaaaccchhhmmmeeennnttt VVVCCC UUUNNNIII EEEnnndddpppoooiiinnnttt (((UUUssseeerrr PPPEEE,,, UUU---PPPEEE))) ***
AAddmmiissssiioonn CCoonnttrrooll,, PPoolliiccyy EEnnffoorrcceemmeenntt,, CCllaassssiiffiiccaattiioonn,, specific for
Attachment
PPoolliicciinngg && MMaarrkkiinngg,, CCoonnggeessttiioonn mmaannaaggeemmeenntt,, SSLLAA Ethernet:
VC
mmoonniittoorriinngg aanndd rreeppoorrttiinngg,, VVCC MMaappppiinngg ttoo LL11 CChhaannnneell,, Bridging
CE VVCC--IIDD ttrraannssllaattiioonn,, RReeppllaacceess UU--PPEE
Note: These different roles can be collapsed within a single box
**
For More Information refer to http://www.ietf.org/internet-drafts/draft-ietf-ppvpn-l2-framework-03.txt
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 6
Review of OAM
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 7
OAM &P: The Concept
(cid:131)
Operations, Administration, Maintenance & Provisioning:
− fault indication − performance monitoring
− security management − diagnostic functions
− configuration & service provisioning
(cid:131) OAM covers both N(cid:197)(cid:198) S and W(cid:197)(cid:198)E interfaces
Management Plane
N
(NMS / EMS)

(cid:197)
(cid:198)
S
Network Plane
(NEs)
W (cid:197)(cid:198) E
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 8
OAM &P: The Concept
(cid:131) Operations, Administration, Maintenance & Provisioning:
− fault indication − performance monitoring
− security management − diagnostic functions
− configuration & service provisioning
(cid:131) OAM covers both N(cid:197)(cid:198) S and W(cid:197)(cid:198)E interfaces
Management Plane
N
(NMS / EMS)

(cid:197)
Primary Focus of Ethernet OAM protocols is on W (cid:197)(cid:198) E in(cid:198)teractions
S
(across NEs)
Network Plane
(NEs)
W (cid:197)(cid:198) E
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 9
OAM Layering
Operator A Operator B
E A A E
d d
T T
g g
M M
e e
C B s s B R R R B B S S R C
u r w w r o o o r r w w o u
Bridstom idge itch itch idge uter uter uter idge idge itch itch uter Bridstom
geer geer
Ethernet Ethernet 10G ATM
over SONET over MPLS Ethernet RFC1483
Service Layer
Service OAM
Network Layer
Network Network
OAM OAM
Ethernet
Transport Layer
SONET MPLS Link ATM
OAM OAM OAM OAM
(cid:131) Model is iterative (layer stacking) & relative (service layer for
Operator is transport layer for SP)
(cid:131) Each Layer supports its own OAM mechanisms
(cid:131) Inter-working across and within OAM layers is possible
Ethernet OAM Tutorial ©2006 Cisco Systems, Inc. All rights reserved. 10