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Chapter 6 Broadband Table 15 Network Setting > Broadband > Advanced (continued) LABEL DESCRIPTION Bitswap Select Enable to allow the VMG to adapt to line changes when you are using G.dmt. SRA DSL Line Mode State (System will reboot once the config is changed!) DSL Modulation PTM over ADSL: G.Dmt : G.lite : T1.413 : ADSL2 : AnnexL : ADSL2+ : AnnexM : VDSL2 VDSL Profile 8a, 8b, 8c, 8d, 12a, 12b, 17a, 30a, 35b, US0 Bit-swapping is a way of keeping the line more stable by constantly monitoring and redistributing bits between channels. Enable or disable Seamless Rate Adaption (SRA). Select Enable to have the VMG automatically adjust the connection's data rate according to line conditions without interrupting service. DSL bonding allows the VMG to aggregate two DSL lines into a virtual connection. The VMG will have higher bandwidth, and faster transmission speed. Select Auto to have the VMG automatically determine whether to use DSL bonding or a single DSL line on the VMG. Select Single to use a single DSL line on the VMG. Select Bonding to use the DSL bonding and ADSL fallback features. Make sure your ISP supports these functions. Select Enable to use PTM over ADSL. Since PTM has less overhead than ATM, some ISPs use this for better performance. ITU G.992.1 (better known as G.dmt) is an ITU standard for ADSL using discrete multitone modulation. G.dmt full-rate ADSL expands the usable bandwidth of existing copper telephone lines, delivering high-speed data communications at rates up to 8 Mbit/s downstream and 1.3 Mbit/s upstream. ITU G.992.2 (better known as G.lite) is an ITU standard for ADSL using discrete multitone modulation. G.lite does not strictly require the use of DSL filters, but like all variants of ADSL generally functions better with splitters. ANSI T1.413 is a technical standard that defines the requirements for the single asymmetric digital subscriber line (ADSL) for the interface between the telecommunications network and the customer installation in terms of their interaction and electrical characteristics. It optionally extends the capability of basic ADSL in data rates to 12 Mbit/s downstream and, depending on Annex version, up to 3.5 Mbit/s upstream (with a mandatory capability of ADSL2 transceivers of 8 Mbit/s downstream and 800 kbit/s upstream). Annex L is an optional specification in the ITU-T ADSL2 recommendation G.992.3 titled Specific requirements for a Reach Extended ADSL2 (READSL2) system operating in the frequency band above POTS, therefore it is often referred to as Reach Extended ADSL2 or READSL2.The main difference between this specification and commonly deployed Annex A is the maximum distance that can be used. The power of the lower frequencies used for transmitting data is boosted up to increase the reach of this signal up to 7 kilometers (23,000 ft). ADSL2+ extends the capability of basic ADSL by doubling the number of downstream channels. The data rates can be as high as 24 Mbit/s downstream and up to 1.4 Mbit/s upstream depending on the distance from the DSLAM to the customer's premises. Annex M is an optional specification in ITU-T recommendations G.992.3 (ADSL2) and G.992.5 (ADSL2+), also referred to as ADSL2 M and ADSL2+ M. This specification extends the capability of commonly deployed Annex A by more than doubling the number of upstream bits. The data rates can be as high as 12 or 24 Mbit/s downstream and 3 Mbit/s upstream depending on the distance from the DSLAM to the customer's premises. VDSL2 (Very High Speed Digital Subscriber Line 2) is the second generation of the VDSL standard (which is currently denoted VDSL1). VDSL2 allows a frequency band of up to 30MHz and transmission rates of up to 100 Mbps in each direction. VDSL2 is defined in G.993.2. VDSL2 profiles differ in the width of the frequency band used to transmit the broadband signal. Profiles that use a wider frequency band can deliver higher maximum speeds. The G.993.2 VDSL standard defines a wide range of profiles that can be used in different VDSL deployment settings, such as in a central office, a street cabinet or a building. The VMG must comply with at least one profile specified in G.993.2. but compliance with more than one profile is allowed. VMG4927-B50A / VMG9827-B50A User's Guide 83

Section	Page
VMG4927-B50A / VMG9827-B50A	1
Document Conventions	3
Contents Overview	4
Table of Contents	6
User’s Guide	15
VMG Introduction	16
1.1 Overview	16
1.1.1 Internet Access	16
1.1.2 Wireless Access	20
1.1.3 VoIP Features	20
1.2 Ways to Manage the VMG	21
1.3 Good Habits for Managing the VMG	21
1.4 Hardware	21
1.4.1 Front Panels	21
1.4.2 WPS Button	23
1.4.3 LEDs (Lights)	24
1.4.4 Rear Panel	26
1.4.5 RESET Button	27
1.4.6 Wall Mounting	27
The Web Configurator	29
2.1 Overview	29
2.1.1 Access the Web Configurator	29
2.2 Web Configurator Layout	31
2.2.1 Title Bar	31
2.2.2 Navigation Panel	32
Quick Start	36
3.1 Overview	36
3.2 Quick Start Setup	36
Tutorials	39
4.1 Overview	39
4.2 Set Up an ADSL PPPoE Connection	39
4.3 Set Up a Secure WiFi Network	42
4.3.1 Configure the WiFi Network Settings	42
4.3.2 Use WPS	44
4.3.3 Connect to the VMG’s WiFi Network Manually (No WPS)	46
4.3.4 Configure Wireless Security on the VMG	46
4.3.5 Configure Your Laptop	48
4.4 Set Up Multiple Wireless Groups	50
4.5 Configure Static Route for Routing to Another Network	53
4.6 Configure QoS Queue and Class Setup	55
4.7 Access the VMG Using DDNS	59
4.7.1 Register a DDNS Account on www.dyndns.org	59
4.7.2 Configure DDNS on Your VMG	60
4.7.3 Test the DDNS Setting	60
4.8 Configure the MAC Address Filter	60
Technical Reference	62
Network Map and Status Screens	63
5.1 Overview	63
5.2 Network Map	63
5.3 Status	65
Broadband	68
6.1 Overview	68
6.1.1 What You Can Do in this Chapter	68
6.1.2 What You Need to Know	69
6.1.3 Before You Begin	71
6.2 Broadband	72
6.2.1 Add/Edit Internet Connection	73
6.3 Advanced Settings	81
6.4 Ethernet WAN	84
6.5 Technical Reference	84
Wireless	90
7.1 Overview	90
7.1.1 What You Can Do in this Chapter	90
7.1.2 What You Need to Know	90
7.2 WiFi	91
7.2.1 WiFi Edit	91
7.3 Guest WiFi	93
7.3.1 Edit Guest WiFi	93
7.4 WPS	94
7.5 Advanced Settings	95
7.6 Channel Status	98
7.7 MESH	100
7.8 Technical Reference	102
7.8.1 Wireless Network Overview	102
7.8.2 Additional Wireless Terms	104
7.8.3 Wireless Security Overview	104
7.8.4 Signal Problems	106
7.8.5 BSS	106
7.8.6 MBSSID	107
7.8.7 Preamble Type	107
7.8.8 WiFi Protected Setup (WPS)	107
Home Networking	113
8.1 Overview	113
8.1.1 What You Can Do in this Chapter	113
8.1.2 What You Need To Know	114
8.1.3 Before You Begin	115
8.2 LAN Setup	115
8.3 Static DHCP	119
8.4 UPnP	120
8.4.1 Turn On UPnP in Windows 7 Example	121
8.5 Additional Subnet	123
8.6 STB Vendor ID	124
8.7 Wake on LAN	125
8.8 TFTP Server Name	125
8.9 Technical Reference	126
8.9.1 LANs, WANs and the VMG	126
8.9.2 DHCP Setup	127
8.9.3 DNS Server Addresses	127
8.9.4 LAN TCP/IP	127
Routing	129
9.1 Overview	129
9.2 Routing	129
9.2.1 Add/Edit Static Route	130
9.3 DNS Route	131
9.3.1 DNS Route Add	132
9.4 Policy Route	133
9.4.1 Add/Edit Policy Route	134
9.5 RIP Overview	135
9.5.1 RIP	135
Quality of Service (QoS)	137
10.1 Overview	137
10.1.1 What You Can Do in this Chapter	137
10.2 What You Need to Know	138
10.3 Quality of Service General Settings	139
10.4 Queue Setup	140
10.4.1 Adding a QoS Queue	142
10.5 Classification Setup	143
10.5.1 Add/Edit QoS Class	143
10.6 QoS Shaper Setup	147
10.6.1 Add/Edit a QoS Shaper	148
10.7 QoS Policer Setup	148
10.7.1 Add/Edit a QoS Policer	149
10.8 QoS Monitor	150
10.9 Technical Reference	151
Network Address Translation (NAT)	156
11.1 Overview	156
11.1.1 What You Can Do in this Chapter	156
11.1.2 What You Need To Know	156
11.2 Port Forwarding	157
11.2.1 Add/Edit Port Forwarding	159
11.3 Applications Settings	160
11.3.1 Add New Application	161
11.4 Port Triggering	162
11.4.1 Add/Edit Port Triggering Rule	163
11.5 DMZ	164
11.6 ALG	165
11.7 Address Mapping	166
11.7.1 Add/Edit Address Mapping Rule	167
11.8 Sessions	168
11.9 Technical Reference	169
11.9.1 NAT Definitions	169
11.9.2 What NAT Does	169
11.9.3 How NAT Works	170
11.9.4 NAT Application	170
Dynamic DNS Setup	173
12.1 Overview	173
12.1.1 What You Can Do in this Chapter	173
12.1.2 What You Need To Know	173
12.2 DNS Entry	174
12.2.1 Add/Edit DNS Entry	174
12.3 Dynamic DNS	175
IGMP/MLD	177
13.1 Overview	177
13.1.1 What You Need To Know	177
13.2 IGMP/MLD	177
VLAN Group	180
14.1 Overview	180
14.1.1 What You Can Do in this Chapter	180
14.2 VLAN Group	180
14.2.1 Add/Edit a VLAN Group	181
Interface Grouping	182
15.1 Overview	182
15.1.1 What You Can Do in this Chapter	182
15.2 Interface Grouping Overview	182
15.2.1 Interface Grouping Configuration	183
15.2.2 Interface Grouping Criteria	185
Firewall	187
16.1 Overview	187
16.1.1 What You Can Do in this Chapter	187
16.1.2 What You Need to Know	188
16.2 Firewall	188
16.3 Protocol	189
16.3.1 Add/Edit a Service	190
16.4 Access Control	191
16.4.1 Add/Edit an ACL Rule	192
16.5 DoS	193
MAC Filter	195
17.1 Overview	195
17.2 MAC Filter	195
Parental Control	197
18.1 Overview	197
18.2 Parental Control	197
18.2.1 Add/Edit a Parental Control Profile	198
Scheduler Rule	201
19.1 Overview	201
19.2 Scheduler Rule	201
19.2.1 Add/Edit a Schedule	201
Certificates	203
20.1 Overview	203
20.1.1 What You Can Do in this Chapter	203
20.2 What You Need to Know	203
20.3 Local Certificates	203
20.3.1 Create Certificate Request	204
20.3.2 View Certificate Request	205
20.4 Trusted CA	206
20.4.1 View Trusted CA Certificate	207
20.4.2 Import Trusted CA Certificate	208
Voice	210
21.1 Overview	210
21.1.1 What You Can Do in this Chapter	210
21.1.2 What You Need to Know About VoIP	210
21.2 Before You Begin	211
21.3 SIP Account	211
21.3.1 SIP Account Add/Edit	212
21.4 SIP Service Provider	216
21.4.1 SIP Service Provider Add/Edit	217
21.5 Phone Device	221
21.5.1 Phone Device Edit	222
21.6 Region	223
21.7 Call Rule	223
21.8 Technical Reference	224
21.8.1 Quality of Service (QoS)	232
21.8.2 Phone Services Overview	232
Log	237
22.1 Overview	237
22.1.1 What You Can Do in this Chapter	237
22.1.2 What You Need To Know	237
22.2 System Log	238
22.3 Security Log	239
Traffic Status	240
23.1 Overview	240
23.1.1 What You Can Do in this Chapter	240
23.2 WAN Status	240
23.3 LAN Status	241
23.4 NAT Status	242
ARP Table	244
24.1 Overview	244
24.1.1 How ARP Works	244
24.2 ARP Table	244
Routing Table	246
25.1 Overview	246
25.2 Routing Table	246
Multicast Status	248
26.1 Overview	248
26.2 IGMP Status	248
26.3 MLD Status	248
xDSL Statistics	250
27.1 xDSL Statistics	250
System	253
28.1 Overview	253
28.2 System	253
User Account	254
29.1 Overview	254
29.2 User Account	254
29.2.1 User Account Add/Edit	255
Remote Management	256
30.1 Overview	256
30.2 MGMT Services	256
30.3 Trust Domain	257
30.3.1 Add Trust Domain	258
SNMP	259
31.1 Overview	259
31.2 SNMP	259
Time Settings	261
32.1 Overview	261
32.2 Time	261
Email Notification	263
33.1 Overview	263
33.2 Email Notification	263
33.2.1 Email Notification Edit	264
Log Setting	265
34.1 Overview	265
34.2 Log Settings	265
34.2.1 Example Email Log	266
Firmware Upgrade	268
35.1 Overview	268
35.2 Firmware	268
Backup/Restore	270
36.1 Overview	270
36.2 Backup/Restore	270
36.3 Reboot	272
Diagnostic	273
37.1 Overview	273
37.1.1 What You Can Do in this Chapter	273
37.2 What You Need to Know	273
37.3 Ping & TraceRoute & NsLookup	274
37.4 802.1ag	274
37.5 802.3ah	276
37.6 OAM Ping	277
Troubleshooting	279
38.1 Power, Hardware Connections, and LEDs	279
38.2 VMG Access and Login	280
38.3 Internet Access	281
38.4 Wireless Internet Access	283
38.5 UPnP	284
38.6 VoIP Call Quality	284
Appendices	286
Customer Support	287
Wireless LANs	293
IPv6	303
Services	311
Legal Information	315

Match case Limit results 1 per page

Chapter 6 Broadband

VMG4927-B50A / VMG9827-B50A User’s Guide

Bitswap

Select

Enable

to allow the VMG to adapt to line changes when you are using G.dmt.

Bit-swapping is a way of keeping the line more stable by constantly monitoring and redistributing

bits between channels.

SRA

Enable or disable Seamless Rate Adaption (SRA). Select

Enable

to have the VMG automatically

adjust the connection’s data rate according to line conditions without interrupting service.

DSL Line Mode

DSL bonding allows the VMG to aggregate two DSL lines into a virtual connection. The VMG will

have higher bandwidth, and faster transmission speed.

State (System

will reboot once

the config is

changed!)

Select

Auto

to have the VMG automatically determine whether to use DSL bonding or a single

DSL line on the VMG.

Select

Single

to use a single DSL line on the VMG.

Select

Bonding

to use the DSL bonding and ADSL fallback features. Make sure your ISP supports

these functions.

DSL Modulation

PTM over ADSL:

Select

Enable

to use PTM over ADSL. Since PTM has less overhead than ATM, some ISPs use this for

better performance.

G.Dmt :

ITU G.992.1 (better known as G.dmt) is an ITU standard for ADSL using discrete multitone

modulation. G.dmt full-rate ADSL expands the usable bandwidth of existing copper telephone

lines, delivering high-speed data communications at rates up to 8 Mbit/s downstream and 1.3

Mbit/s upstream.

G.lite :

ITU G.992.2 (better known as G.lite) is an ITU standard for ADSL using discrete multitone

modulation. G.lite does not strictly require the use of DSL filters, but like all variants of ADSL

generally functions better with splitters.

T1.413 :

ANSI T1.413 is a technical standard that defines the requirements for the single asymmetric

digital subscriber line (ADSL) for the interface between the telecommunications network and

the customer installation in terms of their interaction and electrical characteristics.

ADSL2 :

It optionally extends the capability of basic ADSL in data rates to 12 Mbit/s downstream and,

depending on Annex version, up to 3.5 Mbit/s upstream (with a mandatory capability of ADSL2

transceivers of 8 Mbit/s downstream and 800 kbit/s upstream).

AnnexL :

Annex L is an optional specification in the ITU-T ADSL2 recommendation G.992.3 titled Specific

requirements for a Reach Extended ADSL2 (READSL2) system operating in the frequency band

above POTS, therefore it is often referred to as Reach Extended ADSL2 or READSL2.The main

difference between this specification and commonly deployed Annex A is the maximum

distance that can be used. The power of the lower frequencies used for transmitting data is

boosted up to increase the reach of this signal up to 7 kilometers (23,000 ft).

ADSL2+ :

ADSL2+ extends the capability of basic ADSL by doubling the number of downstream channels.

The data rates can be as high as 24 Mbit/s downstream and up to 1.4 Mbit/s upstream

depending on the distance from the DSLAM to the customer's premises.

AnnexM :

Annex M is an optional specification in ITU-T recommendations G.992.3 (ADSL2) and G.992.5

(ADSL2+), also referred to as ADSL2 M and ADSL2+ M. This specification extends the capability of

commonly deployed Annex A by more than doubling the number of upstream bits. The data

rates can be as high as 12 or 24 Mbit/s downstream and 3 Mbit/s upstream depending on the

distance from the DSLAM to the customer's premises.

VDSL2

VDSL2 (Very High Speed Digital Subscriber Line 2) is the second generation of the VDSL standard

(which is currently denoted VDSL1). VDSL2 allows a frequency band of up to 30MHz and

transmission rates of up to 100 Mbps in each direction. VDSL2 is defined in G.993.2.

VDSL Profile

VDSL2 profiles differ in the width of the frequency band used to transmit the broadband signal.

Profiles that use a wider frequency band can deliver higher maximum speeds.

8a, 8b, 8c, 8d,

12a, 12b, 17a,

30a, 35b, US0

The G.993.2 VDSL standard defines a wide range of profiles that can be used in different VDSL

deployment settings, such as in a central office, a street cabinet or a building.

The VMG must comply with at least one profile specified in G.993.2. but compliance with more

than one profile is allowed.

Table 15

Network Setting > Broadband > Advanced (continued)

LABEL

DESCRIPTION