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L2TP-VP: Layer Two Tunneling Protocol - Virtualization Profile draft-fan-l2tp-vp-00

L2TP-VP: Layer Two Tunneling Protocol - Virtualization Profile draft-fan-l2tp-vp-00 . Duoliang Fan, Liang Xia, Zhen Cao, Namgon Kim. November 2013 Vancouver Canada. Motivation.

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L2TP-VP: Layer Two Tunneling Protocol - Virtualization Profile draft-fan-l2tp-vp-00

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  1. L2TP-VP: Layer Two Tunneling Protocol - Virtualization Profile draft-fan-l2tp-vp-00 Duoliang Fan, Liang Xia, Zhen Cao, Namgon Kim November 2013 Vancouver Canada

  2. Motivation • A simple, enhanced IP-based multi-tenant tunneling technology aim for balancing technology evolution and reuse of existed resource, i.e. protocol and devices • Try to focus on changing the network side, i.e. router or switch, to be transparent to client/server and alleviate their complexity • Can support multiple services (e.g., PPP, Ethernet, Frame Relay, etc) over it

  3. Overall consideration • Complicated control signal: Do not need! • Data plane: Comply with NVO3 DP requirements completely • Security: Introducing security mechanism via inheriting L2TPv3[RFC3931] cookie mechanism • Backward compatibility: Need to co-exist with L2TPv3 and OSS well

  4. Frame format 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 Outer Ethernet Header: …………………………………………………………………………………………………………………………... Outer IPv4 Header: …………………………………………………………………………………………………………………………... L2TP-VP Header: +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Reserved#0 |Type (e.g., ATM, Ethernet,IPv4)| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Tenant Network Identifier (TNI) | Reserved#1 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Cookie (optional) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Inner Ethernet Header: …………………………………………………………………………………………………………………………... Original Ethernet Payload: …………………………………………………………………………………………………………………………...

  5. Data plane • Address learning: Through management plane, data plane flooding, or multicast support of underlay network • BUM traffic: Multicast support of underlay network, or ingress replication • QoS: May support CoS mapping between different network layers, and overlay network QoS by using overlay hearer • ECMP: May support underlay and overlay network ECMP

  6. Next Step • Comments and suggestions? • Cooperating with interested person for further work!

  7. Thanks! Liang Xia

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