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Ran Chen Yubao Wang Liang Guo

LDP Extensions for Optimized MAC Address Withdrawal in VPLS model 3 supporting Qualified learning draft-chen-l2vpn-vpls-mac-opt-qualified-01. Ran Chen Yubao Wang Liang Guo. Introduction.

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Ran Chen Yubao Wang Liang Guo

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  1. LDP Extensions for Optimized MAC Address Withdrawal in VPLS model 3supporting Qualified learningdraft-chen-l2vpn-vpls-mac-opt-qualified-01 Ran Chen YubaoWang LiangGuo IETF80, Prague

  2. Introduction • This draft describes a problem and a solution to optimize the MAC flush procedure in VPLS model 3 ([RFC4664] )supporting qualified learning ([RFC4762]). IETF80, Prague

  3. Problem statement（I） • There are two MAC address withdraw mechanisms in IETF. • RFC4762 • Draft-ietf-l2vpn-vpls-ldp-mac-opt • Comparison of the existing MAC address withdraw mechanism IETF80, Prague

  4. Problem statement（II） • As per the processing rules defined in both RFC4762 and Draft-ietf-l2vpn-vpls-ldp-mac-opt ,PEs flush the MAC address belonging to the unaffected MAC address in qualified learning model. Figure1: MAC address withdraw mechanism defines in existing drafts IETF80, Prague

  5. Solutions(I) • Use of optional MAC Address Space TLV in LDP Address Withdraw Message. • MAC Address Space TLV IETF80, Prague

  6. Solutions（II） • As per the processing rules defined in this draft. Only MAC addresses belonging to VLAN1 and learned over the PW that terminates at PE1 be removed. Figure2: MAC address withdraw mechanism defines in this draft IETF80, Prague

  7. Benefits • Quick convergence • Narrows the scope of MAC address flush. • When PEs receive the message with MAC Address Space TLV , they flush only the MAC addresses belonging to the MAC address space affected by topology change. IETF80, Prague

  8. Next Step • The authors would like to request more WG feedbacks Thank you IETF80, Prague

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