-iv-
5.7 Introduction to Basic BAS Concepts ........................................................................................... 5-26
5.7.1 Multiple Contexts ............................................................................................................. 5-26
5.7.2 Interfaces........................................................................................................................... 5-28
5.7.3 Subscribers........................................................................................................................ 5-28
5.7.4 Ports and Circuits.............................................................................................................. 5-28
5.7.5 Bindings............................................................................................................................ 5-29
6 Interfaces and Communication ............................................................................................................. 6-1
6.1 Interfaces ....................................................................................................................................... 6-1
6.1.1 Ethernet Interface................................................................................................................ 6-1
6.1.2 User Interface...................................................................................................................... 6-4
6.2 Introduction to Protocols ............................................................................................................... 6-6
6.2.1 RFC1483 Protocol .............................................................................................................. 6-6
6.2.2 RFC1483 Bridging Protocol ............................................................................................... 6-7
6.2.3 PPP...................................................................................................................................... 6-7
6.2.4 PPPoE Protocol................................................................................................................. 6-11
6.2.5 VLAN Protocol................................................................................................................. 6-14
6.2.6 STP ................................................................................................................................... 6-17
6.2.7 RADIUS Protocol............................................................................................................. 6-17
6.2.8 802.1X Protocol................................................................................................................ 6-20
6.2.9 Multicast ........................................................................................................................... 6-25
6.2.10 VBAS Protocol ............................................................................................................... 6-29
7 Service Functions.................................................................................................................................... 7-1
7.1 Overview ....................................................................................................................................... 7-1
7.2 Introduction to Services Functions ................................................................................................ 7-1
7.2.1 Basic Service Functions...................................................................................................... 7-1
7.2.2 Broadband O&M Functions................................................................................................ 7-4
