CAN/CSA-ISO/IEC 14165-122:06 (R2021)
Information Technology - Fibre Channel - Part 122: Arbitrated Loop-2 (FC-AL-2) (Adopted ISO/IEC 14165-122:2005, first edition, 2005-06)
Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).
At the time of publication, ISO/IEC 14165-122:2005 is available from ISO and IEC in English only. CSA will publish the French version when it becomes available from ISO and IEC.
This International Standard was reviewed by the CSA TCIT under the jurisdiction of the Strategic Steering Committee on Information Technology and deemed acceptable for use in Canada. (A committee membership list is available on request from the CSA Project Manager.) From time to time, ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approval and publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update or contact a CSA Sales representative. This Standard has been formally approved, without modification, by the Technical Committee and has been approved as a National Standard of Canada by the Standards Council of Canada.
This part of ISO/IEC 14165 specifies signaling interface enhancements for FC-PH, to allow L_Ports to operate with an Arbitrated Loop topology. This standard defines L_Ports that retain the functionality of Ports as specified in FC-PH. The Arbitrated loop topology attaches multiple communicating points in a loop without requiring switches.
The Arbitrated Loop topology is a distributed topology where each L_Port includes the minimum necessary function to establish a Loop circuit. A single FL_Port connected to an Arbitrated Loop allows multiple NL_Ports to attach to a Fabric.
When an L_Port is operating on a Loop with at least one other L_Port, the L_Port uses the protocol extensions to FC-PH that are specified in this standard.
When an L_Port is connected with an N_Port or an F_Port, the L_Port communicates using the protocol defined in FC-PH.
Each L_Port may use a self-discovering procedure to find the correct operating mode without the need for external controls.
Amendment 1:2009 to CAN/CSA-ISO/IEC 14165-122:06, Information Technology - Fibre Channel - Part 122: Arbitrated Loop-2 (FC-AL-2) (Adopted Amendment 1:2008 to ISO/IEC 14165-122:2005)