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Common Framework for OAM
IEEE 802.1 Meeting San DiegoJuly 16th-20th, 2012
byTissa SenevirathneDonald Eastlake 3rd
Objective
Explore complementary OAM model between IEEE 802.1 and IETF/TRILL
Explore Leveraging Existing OAM Framework for the purpose
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OAM ModelGoal of OAM
◦Complement and coexist rather than re-invent and compete
OAM Framework◦Common OAM frame structure◦Common OAM concepts/semantics/Functional
elements◦Common OAM messaging format◦This allow us to reuse the same framework
Faster Time to Market Uniform user experience
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Scope of TRILL OAM vs 802.1ag (CFM)
MEP
802.1ag
TRILL OAM
TRILL Network
802.1 LAN 802.1 LAN
802.1 Bridge
TRILL Switch
MIP4
Scope TRILL OAM vs 802.1ag (CFM)
Link
Network
802.1ag/802.3ah
TRILL OAM
Transport(end-end)
802.1ag
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Physical
Session
Presentation
Application
Media
Layers
Host La
yers
OS
I Mod
el
Common OAM Frame Structure
Encapsulation Header
Flow Entropy Message Channel
1. Technology Dependent
2. Addresses MEP (end Points)
3. Drives Forwarding decisions
1. Technology Dependent
2. Influence Forwarding decisions
1. Drives OAM Functions
2. SHOULD be common across Technologies (SDO)
• OAM Message structures are similar between many technologies
• Most OAM functions are common across technologies• Yet, there are no established common OAM framework
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Common OAM Concepts/Functional Elements
Common OAM Functional elements◦Maintenance Domains◦Maintenance Associations (MA)◦Maintenance End Points (MEP)◦Maintenance Intermediate Points (MIP)
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Common OAM Message Channel
Utilize 802.1ag Messaging ◦Re-use TLV and opcodes where commonality
exist◦IETF/TRILL specific opcodes for Technology
specific functions.
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Next StepsYour comment/Feedback on the general
direction of having a common OAM framework between IEEE and TRILL/IETF
If we do agree this is the right thing to do◦Then how can we collaborate and workout the
details ?
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ReferencesTRILL OAM Requirements (WG document)
◦draft-ietf-trill-oam-req-00 TRILL OAM Framework (Individual submission)
◦draft-salam-trill-oam-framework-00 Use of 802.1ag for TRILL (Individual submission)
◦draft-tissa-trill-8021ag-00
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