Title: Toshiba's Flow Attribute Notification Protocol (FANP) Specification
Author(s): K. Nagami, Y. Katsube, Y. Shobatake, A. Mogi, S. Matsuzawa, T. Jinmei, H. Esaki.
Status: INFORMATIONAL
Date: Apr 1997
Length: 41137
This memo discusses Flow Attribute Notification Protocol (FANP), which is a protocol between neighbor nodes for the management of cut-through packet forwarding functionalities. In cut-through packet forwarding, a router doesn't have to perform conventional IP packet processing for received packets. FANP indicates mapping information between a datalink connection and a packet flow to the neighbor node and helps a pair of nodes manage the mapping information. By using FANP, routers (e.g., CSR; Cell Switch Router) can forward incoming packets based on their datalink-level connection identifiers, bypassing usual IP packet processing. The design policy of the FANP is;
(1) soft-state cut-through path (Dedicated-VC) management
(2) protocol between neighbor nodes instead of end-to-end
(3) applicable to any connection oriented datalink platform
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