OAM Domain configuration using GARP (Generic OAM registration protocol - GORP) David Elie-Dit-Cosaque, Kamakshi Sridhar, Maarten Vissers, Tony Van Kerckhove

Why automatic configuration of OAM domain? Large number of flow points to configure prone to human errors Dynamic conditions MP’s may be added or deleted Spanning tree changes Bridge Spanning tree branch LP MP Upper level LP Need for Dynamic Configuration of the OAM domain. We propose GARP OAM Registration protocol (GORP)

GORP(GARP OAM Registration Protocol) Basics GARP application Similar to GVRP New attributes = OAM levels Just like in GVRP: GORP requires manual placement of at least two MPs to define an OAM domain Enables Dynamic placement and Level assignment of all other LP’s GVRP pruning can be translated to GORP pruning-> Increased security GORP brings plug and play and security to OAM domain configuration

Level determination of LP’s using GORP GORP: Each level is configured one at a time. GORP: The order in which levels are configured does not matter. Local decision: Every activated LP must pick minimum{level#1, … level # k} Customer Level MP1 MP2 20 LP1 LP2 20 Provider Level MP3 MP4 11 LP3 LP4 LP5 LP6 11 11 Lower Level attribute registration triggers changes of level Operator Level MP5 MP6 9 LP7 LP8 9 Physical Level ports P1 P2 P3 P4 P5 P6 P7 P8

GORP mechanism (placement of LP’s and setting their levels) OAM1 Manually configured MP OAM1 R OAM1 D 1 2 4 3 B3 OAM1 D OAM1 D 1 2 4 3 OAM1 D OAM1 D B2 1 2 4 3 OAM1 R OAM1 D OAM1 R OAM1 D B5 OAM1 D OAM1 D OAM1 D OAM1 D OAM1 R 1 2 4 3 1 2 4 3 OAM1 D B1 OAM1 R B4 1 2 4 3 OAM1 R OAM1 D 1 2 4 3 OAM1 D OAM1 D OAM1 D OAM1 D B7 B6 OAM1 D OAM1 D R: registered D: declared OAM1 D OAM1 D

GORP mechanism (placement of LP’s and setting their levels) OAM1 RD Port with auto- configured LP Port with manually configured MP OAM1 RD OAM1 RD OAM1 R OAM1 D OAM1 D 1 2 4 3 OAM1 RD D Manually configured MP B3 1 2 4 3 OAM1 D OAM1 D OAM1 D OAM1 DR OAM1 DR OAM1 D OAM1 D OAM1 DR OAM1 D OAM1 DR B2 1 2 4 3 OAM1 RD OAM1 R OAM1 RD OAM1 D OAM1 D OAM1 RD OAM1 RD OAM1 R OAM1 D OAM1 D D B5 OAM1 D OAM1 D OAM1 D OAM1 DR OAM1 DR OAM1 D OAM1 DR OAM1 D 1 2 4 3 1 2 4 3 OAM1 D OAM1 R B1 OAM1 R OAM1 D B4 1 2 4 3 1 2 4 3 OAM1 R OAM1 D OAM1 D OAM1 D OAM1 D OAM1 D B7 B6 OAM1 D OAM1 D R: registered D: declared OAM1 D OAM1 D

GORP pruning Just like GVRP pruning, can do GORP pruning. GORP pruning results in: Automatic placement of MP’s wherever required Benefits: Automatic MP’s will plug in holes in the OAM domain. Thus, Missing MP’s will not result in security leaks

GORP pruning Missing MP MP Dynamically created MPs MP5 Manually created MPs MP MP1 MP3 MPa MPb Provider Level MP2 LP MP4 MP6 Customer Level GORP dynamic placement of MPs prevents OAM frames from leaking outside the OAM domain

New manual (or repaired) MPs New MP MP Dynamically created MPs MP5 Manually created MPs MP MP1 MP3 MPa MPb Provider Level MP2 MP4 MP6 Customer Level New manual MP’s installed: existing MP’s will be removed.

GORP pruning (placement of boundary MP’s) OAM1 RD DD Port with auto- configured LP Port with manually configured MP OAM1 RD OAM1 RD OAM1 R OAM1 D OAM1 D OAM1 D 1 2 4 3 OAM1 RD D Manually configured MP B3 1 2 4 3 OAM1 D OAM1 D OAM1 D OAM1 DR OAM1 D OAM1 DR OAM1 D OAM1 D OAM1 D OAM1 DR OAM1 DR OAM1 D B2 1 2 4 3 OAM1 R OAM1 RD OAM1 RD OAM1 D OAM1 D OAM1 D OAM1 R OAM1 RD OAM1 RD OAM1 D OAM1 D OAM1 D D B5 OAM1 D OAM1 D OAM1 D OAM1 DR OAM1 DR OAM1 D OAM1 D OAM1 DR OAM1 D OAM1 R 1 2 4 3 1 2 4 3 OAM1 D B1 B4 OAM1 R OAM1 D 1 2 4 3 1 2 4 3 OAM1 R OAM1 D OAM1 D OAM1 D OAM1 D OAM1 D B7 B6 OAM1 D OAM1 D R: registered D: declared OAM1 D OAM1 D

Attribute Value is the OAM domain Level GARP frame format Attribute Value is the OAM domain Level No modifications to the GARP frame format

Summary GORP is a new GARP application similar to GVRP (same frame format, new attribute) GORP allows OAM domain pruning to prevent leaks GORP automatically configures/reconfigures OAM domain

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