<draft-lee-ce-based-vpl-00.txt> 54 th IETF PPVPN WG - PowerPoint PPT Presentation

<draft-lee-ce-based-vpl-00.txt> 54 th IETF PPVPN WG Cheng-Yin.Lee@alcatel.com Mitsuru.Higashiyama@yy.anritsu.co.jp <draft-lee-ce-based-vpl-00.txt>

Martini RFC2547 PE-based Kompella VPLS VR CE-based site-to-site CE-based VPL IPsec VPNs L2-VPN L3-VPN (modified diagram courtesy of Jeremy DeClercq) <draft-lee-ce-based-vpl-00.txt>

CE-based VPL PE2 CE2 CE1 PE1 P Eth Eth Ethernet/IP/MPLS Cloud CE3 PE3 PE4 CE5 P P Eth Eth CE4 Eth CEs forming a virtual bridge (a broadcast domain or VPL) <draft-lee-ce-based-vpl-00.txt>

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1)Simplify VPL config over multiple MAN CE2 CE1 Ethernet/IP Cloud CE3 CE5 MAN MAN CE4 VPL •Reduces provisioning required - No need to resort to stacking VLAN tags, or setting up an LSP per VPL between MANs to stitch multiple MANs together Note: CEs are IP reachable and edge to edge MPLS is not mandatory for VPL connectivity <draft-lee-ce-based-vpl-00.txt>

2) Agnostic to access technology CE2 CE1 IP/MPLS Cloud eMAN CE3 ADSL CE5 FR/ATM CE4 Access ? VPL • A CE at one end may access the provider’s network using Ethernet, the other end may be via ADSL Note: different access networks are connected to an IP network, CEs are reachable using one common addressing (i.e. IP), <draft-lee-ce-based-vpl-00.txt>

What does CE-based VPL enable? (cont) 3) If a provider runs out of VLAN IDs to support more VPLs, this solution can be used to increase the number of VPLs supported 4) new VPLs can be offered over an existing VLAN network. VPLS will likely require a separate network infrastructure <draft-lee-ce-based-vpl-00.txt>

What does CE-based VPL enable? (cont) 5) leverages connectivity (between CEs) infrastructure provided by Ethernet (802.1d)/IP/MPLS, no need to signal specifically for VPL connectivity in the network cf the use of LDP in MPLS VPLS or GVRP in VLAN 802.1q → auto-provisioning/setup of VPL connectivity at CEs only 6) Easier troubleshooting of VPL service - if service is not terminated by CE managed by provider and a provider has no access to a customer owned CE, a provider can’t easily determine whether the VPL service is working or not, and a customer may have to debug VPL service problem <draft-lee-ce-based-vpl-00.txt>

- Higher frame header overhead cf VLAN 802.1q & MPLS VPLS, similar tradeoff in PWE’s Ethernet over L2TP <draft-lee-ce-based-vpl-00.txt>

• evaluate suitability of other tunneling technologies and compare header overhead (Ethernet directly over L2TP or over PPP, GRE, IP) • select a small number of suitable CE auto-provisioning methods (see draft-lee-ppvpn-ce-auto-config-01.txt) <draft-lee-ce-based-vpl-00.txt>