Specifications

Revision: 2006-04-27
ix
Table of Contents
1 Related Documents ............................................................................................................................................................1-1
2 Overview ..............................................................................................................................................................................2-1
2.1 Introduction...............................................................................................................................................................2-1
2.2 Applications ..............................................................................................................................................................2-1
2.3 Modem Types...........................................................................................................................................................2-3
2.4 Accessories ..............................................................................................................................................................2-3
2.4.1 Accessories for plugin ..................................................................................................................................2-3
2.4.2 Accessories for tabletop...............................................................................................................................2-4
3 Modem Features .................................................................................................................................................................3-5
3.1 DSL...........................................................................................................................................................................3-5
3.1.1 Linerates and DSL sync rates ......................................................................................................................3-5
3.1.2 Multipair operation........................................................................................................................................3-6
3.1.3 Power Backoff ..............................................................................................................................................3-7
3.1.4 Symmetric and Asymmetric PSDs ...............................................................................................................3-7
3.1.5 DSL Performance.........................................................................................................................................3-7
3.1.6 Wetting Current............................................................................................................................................3-8
3.1.7 Master / Slave ..............................................................................................................................................3-9
3.1.8 DSL Clocking ...............................................................................................................................................3-9
3.2 Ethernet (plugin modem) ........................................................................................................................................3-10
3.2.1 Ethernet over DSL......................................................................................................................................3-10
3.2.2 Ethernet Bridging .......................................................................................................................................3-10
3.2.3 VLANs........................................................................................................................................................3-11
3.2.4 Individual and shared forwarding databases..............................................................................................3-13
3.2.5 VLAN Examples .........................................................................................................................................3-12
3.2.6 Stacked VLANs ..........................................................................................................................................3-13
3.2.7 Class of Service (CoS)...............................................................................................................................3-15
3.3 Ethernet (tabletop modem).....................................................................................................................................3-17
3.3.1 Ethernet over DSL......................................................................................................................................3-17
3.3.2 VLAN transparency....................................................................................................................................3-17
3.3.3 Mixed mode operation................................................................................................................................3-18
3.3.4 Cisco HDLC ...............................................................................................................................................3-18
3.4 Firmware update.....................................................................................................................................................3-19
3.4.1 Plugin .........................................................................................................................................................3-19
3.4.2 Tabletop .....................................................................................................................................................3-19
3.5 Management...........................................................................................................................................................3-19
3.5.1 Management interfaces..............................................................................................................................3-19
3.5.2 Chain Management through the DSL EOC................................................................................................3-21
3.5.3 Management IP Address Configuration .....................................................................................................3-22
3.5.4 Management VLAN configuration ..............................................................................................................3-22
3.5.5 VLAN configuration with transparent bridging............................................................................................3-23
3.6 G.826 Performance Monitoring ..............................................................................................................................3-23
3.7 Test loops ...............................................................................................................................................................3-24
3.8 Password protection ...............................................................................................................................................3-24