Fabric Initialization Process

When a switch joins a fabric several Class F frames are used to exchange various parameters:
1)  ELP (Exchange Link Parameters)
             
              - Contains sender information

              - R_A_TOV / E_D_TOV

              - PWWN / Switch Name

              - Flow control used
2)  ESC (Exchange Switch Capabilities)

               - Vendor specific info

               - Virtual Fabric support

3)   EFP (Exchange Fabric Parameters)

               - Principal switch selection

               - Principal switch priority

               - Switch name

               - Domain ID list

               - Vendor specific info

               - Virtual Fabric support

               - Zoning database