5.9 Authenticator options............................................................................................................. 14 5.10 MKA requirements ................................................................................................................ 15 5.11 MKA options ......................................................................................................................... 15 5.12 Virtual port requirements....................................................................................................... 16 5.13 Virtual port options................................................................................................................ 16 5.14 Announcement transmission requirements............................................................................ 16 5.15 Announcement transmission options ..................................................................................... 17 5.16 Announcement reception requirements ................................................................................. 17 5.17 Announcement reception options .......................................................................................... 17 5.18 Requirements for SNMP access to the PAE MIB ................................................................. 17 5.19 Options for SNMP access to the PAE MIB........................................................................... 17 5.20 PAC requirements.................................................................................................................. 17 5.21 System recommendations ...................................................................................................... 18 5.22 Prohibitions............................................................................................................................ 18 6. Principles of port-based network access control operation ............................................................... 19 6.1 Port-ba