TRILL anycast Layer 3 Gateway

Document Type Expired Internet-Draft (individual)
Last updated 2014-08-17 (latest revision 2014-02-13)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This draft mainly describes centralized anycast layer 3 gateway solution in TRILL campus. Comparing to traditional VRRP based active-standby layer 3 gateway solution, this solution can achieve better load balancing and scalability. Anycast nickname, anycast gateway IP and MAC are introduced. It can ensure inter-subnet traffic forwarding in flow-based load balancing mode among all physical layer 3 gateways. To avoid sending duplicated ARP reply message to the end system, ARP master gateway election mechanism is introduced. The election algorithm is described in this draft.


Hao Weiguo (
Li Yizhou (
Donald Eastlake (
Radia Perlman (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)