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A Framework for E-VPN Performance Monitoring

A Framework for E-VPN Performance Monitoring. draft-zheng-l2vpn-evpn-pm-framework-00. Vero Zheng (vero.zheng@huawei.com) Robin Li (lizhenbin@huawei.com) L2VPN WG, IETF 87, Berlin, 29 July 2013. Background.

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A Framework for E-VPN Performance Monitoring

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  1. A Framework for E-VPN Performance Monitoring draft-zheng-l2vpn-evpn-pm-framework-00 Vero Zheng (vero.zheng@huawei.com) Robin Li (lizhenbin@huawei.com) L2VPN WG, IETF 87, Berlin, 29 July 2013

  2. Background • Virtual Private LAN Service (VPLS) is a proven and widely deployed Ethernet L2VPN solution with limitations. Also, new applications are driving several new requirements for other L2VPN services • Ethernet VPN (E-VPN) solution has been proposed to meet the requirements • Performance Monitoring (PM) in E-VPN is desired • Challenges for performance monitoring in E-VPN • Identifying the source EVI of received packets • This document introduces the framework for E-VPN PM

  3. Challenge for E-VPN Performance Monitoring • Network Model: Multipoint-to-Point or Multipoint-to-Multipoint • Existing mechanisms for MPLS networks are for P2P or P2MP. CE1 EVI 1 PE1 D-MAC EVI 1 D-MAC Label：3000 CE4 PE3 CE2 D-MAC Label：3000 Label：3000 PE2 Label：3000 CE3 ？？ Label：3000 EVI 1 Data to D-MAC D-MAC Label：3000 Same Consideration for E-VPN

  4. New Concept for E-VPN PM • EVI-to-EVI Tunnel (ET) • Point-to-point connection between two EVIs in a E-VPN • ET is used by the egress PE to identify the ingress EVI CE2 PE2 CE1 PE1 PE3 CE3 PE4 CE4

  5. Control Plane Mechanisms • Step1: VPN membership auto-discovery • Could be achieved by the Ethernet A-D route per EVI defined in draft-ietf-l2vpn-evpn • Step2: EVI-to-EVI Tunnel Label Allocation – ET Label • For each local EVI, the egress PE SHOULD allocate different ET labels for each remote EVI in PEs belonging to the same E-VPN CE2 PE2 CE1 PE1 PE3 Lable1 Lable2 Lable3 CE3 PE4 CE4

  6. Packet Encapsulation with ET label • Approach 1: additional ET label for Ingress EVI identification • Approach 2: replace MAC label with ET label It’s Simple, its Backward Compatible and its Secure

  7. E-VPN Performance Monitoring • PM mechanisms in RFC 6374 can be used for E-VPN • Loss & Delay measurement • Address format for E-VPN: • Source addresses for E-VPN: (RD + PE address) of source EVI • Destination addresses for E-VPN: (RD + PE address) of destination EVI

  8. Next Steps • Solicit comments & feedbacks • Revise the draft

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