1. Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 1 80th IETF - Prague VPLS PE Model with E-Tree Support Yuanlong Jiang (yljiang@huawei.com)yljiang@huawei.com Lucy Yong (lucyyong@huawei.com)lucyyong@huawei.com Manuel Paul (manuel.paul@telekom.de)manuel.paul@telekom.de Frederic Jounay (frederic.jounay@orange-ftgroup.com)frederic.jounay@orange-ftgroup.com draft-jiang-l2vpn-vpls-etree-pe-03.txt

2. 2 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague Backgrounds E-Tree Requirements in multiple SDOs Service Definition: MEF 6.1, MEF 10.2 Mobile backhaul: MEF 22 Broadband Network Architecture: BBF WT-145 MPLS in Mobile Backhaul: BBF WT-221 MPLS in Carrier Ethernet: BBF WT-224 Lack of E-Tree support in VPLS standard Non-standard mechanism for single root topology Single VSI + extended split horizon mechanism No VPLS support for generic multi-roots topology

3. 3 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague E-Tree Solution in Ethernet IEEE uses a pair of SVLANs - Trunk SVLAN and Branch SVLAN to support generic E-Tree, which is incorporated in the latest IEEE 802.1Q standard UNI Root Leaf Root Leaf Trunk Branch MEN A UNI

4. 4 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague VLAN Based E-Tree Solution in VPLS R R L Bridge Module Root PW CE1 AC PW Leaf Bridge PE1 PE2 Root Leaf L R R Bridge 2 VLANs into a VSI PE3 CE2 CE3 CE4 CE5 Tagged PW with 2 VLANs NSP VPLS MEN L VSI Fwder VSI Fwder VSI Fwder NSP: Native Service Processing PW

5. 5 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague Extension of LDP Protocol A new E-Tree sub-TLV is defined PEs negotiate the support of E-Tree when a PW is set up Root VLAN ID and Leaf VLAN ID carried in the sub-TLV P bit indicates that sender is attached with Pure Leaves V bit indicates senders VLAN mapping capability Algorithm for PW negotiation of E-Tree service Whether VLAN mapping is needed If VLAN mapping is needed, a PE is selected to do the mapping Whether Optimized mode or Compatible mode be enabled

6. 6 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague Benefits Using Dual VLANs – the same flavor of E-Tree solution as Ethernet A converged solution compatible with both Ethernet and VSI forwarding planes and applicable to diverse network scenarios No change to VPLS architecture or PW layer semantics, standard work can be minimized Universality Applicable to all known VPLS PE models and their interworking scenarios Applicable to both LDP VPLS and BGP VPLS Scalability with only a single VSI and a single suite of PWs needed

7. 7 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague Changes in draft-03 Mapping/filtering behaviors in data plane All Root/Leaf interworking scenarios are summarized into 3 typical PW processing modes More details added for VLAN mapping/filtering Negotiation procedure Control plane separated from data plane Auto negotiate and choose a single PE to do VLAN mapping

8. 8 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague Next Step Add BGP signaling for E-Tree Solicit feedbacks on the WG mailing list To be accepted as WG draft?

9. 9 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 80th IETF - Prague Thank You