1. Scalable VPWS Network draft-yudong-pwe3-control-protocol-ext-00.txt Chi Yudong, Kong Yong, Du Ke, Wang Mingyi ZTE Corporation Jiang Lintao CATR of MII

2. Scaling Problem: Full mesh LDP signal connect & PSN Tunnel N(N-1)/2 Targeted LDP sessions; N(N-1)/2 PSN tunnels

3. PE2 send PW mapping to reflector: SPE LSRID = PE2 TPE LSRID = PE1 AGI, SAII, TAII, Label = L1 reflector relay PW mapping to PE1: SPE LSRID = PE2 TPE LSRID = PE1 AGI, SAII, TAII, Label = L1

4. Reflector: How to select a intermediate hop for relay of PW messages To relay message to PE1, I can get it by the way of R1 PE and reflector send PW mapping to peer only if: 1) the peer is the target of PW mapping; 2) the peer is the eBGP NEXT_HOP to the target of PW mapping. 3) the peer is the is the IGP next hop for the target of PW mapping. 4) the peer resides in the closest AS in the best path towards the target of PW mapping. 5) the peer is configured as the static next-hop peer for the target of PW mapping. and, otherwise, the PW mapping should be sent to reflector-neighbor.

5. Reflector: Stitching point of PWs PE2 send PW mapping to reflector: SPE LSRID = PE2 TPE LSRID = PE1 AGI, SAII, TAII, Label = L1 reflector relay PW mapping to PE1: SPE LSRID = PE2 TPE LSRID = PE1 AGI, SAII, TAII, Label = L2 Nexthop = reflector

6. Auto Negotiation of Capability to Support Reflector CN Message I ’ m a reflector (With LRC TLV) I ’ m a PE supporting reflector (with RC TLV) No CN Message received from PE1, so PE1 doesn ’ t support the extention