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v1.0, May 2008
Chapter 22
IGMP Querier
When the switch is used in network applications where video services such as IPTV, video
streaming, and gaming are deployed, the video traffic would normally be flooded to all connected
ports because such traffic packets usually have multicast Ethernet addresses. IGMP snooping can
be enabled to create a multicast group to direct that traffic only to those users that require it.
However, the IGMP snooping operation usually requires an extra network device—normally a
router—that can generate an IGMP membership query and solicit interested nodes to respond.
With the build-in IGMP Querier feature inside the switch, such an external device is no longer
needed.
Since the IGMP querier is designed to work with IGMP snooping, it is necessary to enable IGMP
snooping when using it.
The examples in this chapter show how to setup the switch to generate the IGMP query.
Figure 22-1 shows a network application for video streaming service using the IGMP querier
feature.
Figure 22-1
- NETGEAR 7000 Series 1
- Managed Switch 1
- Administration Guide 1
- Version 7.2 1
- Declaration Of Conformity 2
- 7000 Series Managed Switch 3
- Contents 5
- About This Manual 15
- How to Use This Manual 16
- How to Print this Manual 16
- Revision History 17
- Chapter 1 19
- Introduction 19
- Audience 20
- CLI Documentation 21
- Related Documentation 21
- 1-4 Introduction 22
- Chapter 2 23
- Getting Started 23
- 2-6 Getting Started 24
- Getting Started 2-7 25
- Starting the Switch 26
- Initial Configuration 26
- Getting Started 2-9 27
- Software Installation 28
- Chapter 3 33
- Changing the Password 34
- Saving the Configuration 35
- Chapter 4 37
- Using the Web Interface 37
- Starting the Web Interface 38
- Using the Web Interface 4-3 39
- Figure 4-1 39
- Figure 4-2 39
- 4-4 Using the Web Interface 40
- Figure 4-3 40
- Using the Web Interface 4-5 41
- 4-6 Using the Web Interface 42
- Chapter 5 43
- Virtual LANs 43
- VLAN Configuration Example 44
- Virtual LANs 5-3 45
- Graphical User Interface 46
- Chapter 6 Link Aggregation 47
- Example #1: Create two LAGS 48
- Example #3: Enable both LAGs 49
- 6-4 Link Aggregation 50
- Chapter 7 51
- IP Routing Services 51
- Port Routing Configuration 52
- VLAN Routing 54
- VLAN Routing Configuration 55
- 7-6 IP Routing Services 56
- IP Routing Services 7-7 57
- IP Routing Services 7-9 59
- 7-10 IP Routing Services 60
- IP Routing Services 7-11 61
- Routing Information Protocol 62
- 7-14 IP Routing Services 64
- IP Routing Services 7-15 65
- IP Routing Services 7-17 67
- Figure 7-5 67
- 7-18 IP Routing Services 68
- IP Routing Services 7-19 69
- Figure 7-6 69
- 7-20 IP Routing Services 70
- Overview 71
- Chapter 8 73
- Chapter 9 77
- Access Control Lists (ACLs) 77
- Configuring IP ACLs 78
- IP ACL Examples 79
- Figure 9-2 80
- Figure 9-3 84
- Figure 9-4 85
- Figure 9-5 86
- Figure 9-6 87
- Figure 9-7 87
- Figure 9-8 88
- Figure 9-9 89
- Figure 9-10 89
- Figure 9-11 90
- Figure 9-12 90
- Figure 9-13 91
- Figure 9-14 92
- Figure 9-15 93
- Figure 9-16 94
- Figure 9-17 95
- Figure 9-18 96
- Figure 9-19 97
- Figure 9-20 98
- Using ACLs 99
- CLI Commands 100
- Figure 9-23 102
- Figure 9-24 103
- Figure 9-25 104
- Figure 9-27 105
- Figure 9-26 105
- Figure 9-28 106
- Figure 9-29 106
- Figure 9-30 107
- Figure 9-31 107
- Figure 9-32 108
- Figure 9-33 109
- Figure 9-34 110
- Figure 9-35 110
- Figure 9-36 111
- Figure 9-37 112
- Figure 9-38 113
- MAC ACL CLI Examples 114
- Example #2: permit any 115
- Example #4 permit 117
- Chapter 10 119
- CoS Queue Configuration 120
- CLI Examples 121
- Scheduler Mode 123
- Traffic Shaping 124
- Example #1 traffic-shape 125
- Chapter 11 127
- Differentiated Services 127
- CLI Example 128
- Differentiated Services 11-3 129
- 11-4 Differentiated Services 130
- Differentiated Services 11-5 131
- Figure 11-2 131
- 11-6 Differentiated Services 132
- Chapter 12 133
- IGMP Snooping 133
- Example #2: show igmpsnooping 134
- Chapter 13 135
- Port Security 135
- Operation 136
- 13-4 Port Security 138
- Chapter 14 139
- Traceroute 139
- Chapter 15 141
- Configuration Scripting 141
- Example #1: script 142
- Configuration Scripting 15-3 143
- 15-4 Configuration Scripting 144
- Chapter 16 145
- Outbound Telnet 145
- Example #1: show network 146
- Example #2: show telnet 146
- Outbound Telnet 16-3 147
- 16-4 Outbound Telnet 148
- Chapter 17 Port Mirroring 149
- Example #2: show port all 150
- Port Mirroring 17-3 151
- 17-4 Port Mirroring 152
- Chapter 18 153
- Example #2: show sntp client 154
- Example #3: show sntp server 154
- Example #4: Configure SNTP 154
- Example #5: Setting Time Zone 156
- Chapter 19 157
- Example #1: show logging 159
- 19-4 Syslog 160
- Syslog 19-5 161
- 19-6 Syslog 162
- Chapter 20 163
- Managing Switch Stacks 163
- Understanding Switch Stacks 164
- Switch Stack Membership 165
- 20-4 Managing Switch Stacks 166
- Figure 20-1 166
- Figure 20-2 166
- Stack Member Numbers 167
- Stack Member Priority Values 168
- Managing Switch Stacks 20-7 169
- 20-8 Managing Switch Stacks 170
- Managing Switch Stacks 20-9 171
- 20-10 Managing Switch Stacks 172
- Stacking Recommendations 173
- 20-12 Managing Switch Stacks 174
- Managing Switch Stacks 20-13 175
- Renumbering Stack Members 176
- Preconfiguration 177
- Upgrading Firmware 177
- 20-16 Managing Switch Stacks 178
- Code Mismatch 179
- 20-18 Managing Switch Stacks 180
- Pre-Login Banner 181
- Chapter 21 181
- 21-2 Pre-Login Banner 182
- Chapter 22 183
- IGMP Querier 183
- Chapter 23 185
- 23-2 DNS 186
- Figure 23-1 186
- DNS 23-3 187
- Figure 23-2 187
- 3. Click Add 188
- Chapter 24 189
- DHCP Server 189
- 24-2 DHCP Server 190
- Figure 24-1 190
- DHCP Server 24-3 191
- Figure 24-2 191
- 24-4 DHCP Server 192
- DHCP Server 24-5 193
- Figure 24-3 193
- 24-6 DHCP Server 194
- Figure 24-4 194
- Chapter 25 195
- Protected Ports 195
- Protected Ports 25-3 197
- 25-4 Protected Ports 198
- Figure 25-2 198
- Protected Ports 25-5 199
- Figure 25-3 199
- 25-6 Protected Ports 200
- Figure 25-4 200
- Protected Ports 25-7 201
- Figure 0-1 201
- Figure 25-5 201
- 25-8 Protected Ports 202
- Figure 25-6 202
- Chapter 26 203
- 802.1x Port Security 203
- 802.1x Port Security 26-3 205
- Figure 26-2 205
- 26-4 802.1x Port Security 206
- 802.1x Port Security 26-5 207
- Figure 26-3 207
- Figure 26-4 207
- 26-6 802.1x Port Security 208
- Figure 26-5 208
- Figure 26-6 208
- 802.1x Port Security 26-7 209
- 26-8 802.1x Port Security 210
- Chapter 27 211
- Double VLANs 211
- Double VLANs 27-3 213
- Figure 27-2 213
- 27-4 Double VLANs 214
- Figure 27-3 214
- Double VLANs 27-5 215
- Figure 27-4 215
- 27-6 Double VLANs 216
- Figure 27-5 216
- Numerics 217
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