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AT-FS970M Series Version 2.3.1.0 Web Interface User’s Guide
161
Figure 60. IGMP Snooping Querier with One Querier
Table 3 lists the switch settings that are illustrated in Figure 60.
Assigning
Multiple Queriers
IGMP snooping querier supports multiple queriers. A total of three queriers
are supported, one active querier and up to two standby queriers. The
active querier is the querier with the lowest IP address. The standby
querier has the second lowest IP address, and the switch with the highest
IP address is the second standby querier.
The difference between the active and standby queriers is that only the
active querier registers IGMP reports. A standby querier does not update
its MAC tables, so IGMP reports are not registered on the switch.
When you assign multiple queriers to a LAN, the software must decide
which is the active querier and which is the standby querier. This task falls
to a switch in the network that has IGMP snooping enabled, but IGMP
snooping querier disabled. Consequently, a LAN with multiple queriers
requires this extra switch.
For example, to assign two queriers to a network, you need three
switches. First, enable IGMP snooping on all three switches. Then enable
IGMP snooping querier on two switches, for this example, switches 1 and
3. Switch 2 determines which of the querier-enabled switches has the
lowest IP address and deems that switch the active querier. The switch
Table 3. IGMP Snooping Querier with One Querier
Switch
Routing
Address
IGMP
Snooping
IGMP
Snooping
Querier
Querier
Status
1 149.123.48.2 Enabled Enabled Active
Multicast source:
IP address:
149.123.48.1
Switch 1:
VLAN: Default_VLAN
Routing interface:
149.123.48.2
Host nodes:
IP addresses:
149.123.48.3 to 149.123.48.24
- AT-FS970M Series 1
- Copyright 2
- Contents 10
- Document Conventions 16
- Contacting Allied Telesis 18
- Browser Interface 19
- Management Sessions 20
- Web Manager Accounts 21
- Starting a Management Session 23
- Figure 1. Login Page 26
- Logging onto the Switch 27
- What to Configure First 30
- Setting System 31
- When You Do 32
- Not Know the IP 32
- Address of the 32
- Baud rate: 9600 33
- Data bits: 8 33
- Parity: None 33
- Stop bits: 1 33
- Flow control: None 33
- Enabling HTTP 35
- Service in the 35
- Saving your 36
- Changes in the 36
- Saving Your Changes 37
- 8 on page 37 38
- Basic Switch Parameters 39
- Configuring an 40
- SNTP or NTP 40
- Time Manually 43
- Managing Local User Accounts 52
- Changing a User 53
- Password 53
- Changing the 54
- User Privilege 54
- Deleting a User 55
- 5. Click Delete User 56
- Rebooting a Switch 57
- Upgrading the Software 58
- Displaying System Information 61
- Setting Port Parameters 63
- Port Numbers on the Switch 64
- Changing the Port Settings 67
- Setting Port Statistics 75
- Displaying Port Statistics 76
- Receive Statistics 77
- Transmit 79
- Statistics 79
- Interface 80
- Clearing Port Statistics 82
- Reloading Statistics 83
- Port Mirroring 85
- Assigning a Destination Port 88
- Specifying Direction Type 89
- 6. Click Apply 90
- 7. Click SAVE 90
- Chapter 6: Port Mirroring 92
- Chapter 7 93
- Setting the MAC Address 101
- Chapter 9 111
- Overview 112
- Displaying LACP Trunks 113
- Adding an LACP Trunk 115
- Modifying an LACP Trunk 117
- Deleting an LACP Trunk 119
- Setting Static Port Trunks 121
- Adding Static Trunks 125
- Deleting Static Trunks 129
- Chapter 11 131
- Tagged and 133
- Untagged Ports 133
- Displaying VLANs 134
- Adding a VLAN 135
- Modifying VLANs 137
- Assigning a Native VLAN 139
- Deleting VLANs 142
- Chapter 12 143
- (IGMP) Snooping 149
- Disabling IGMP Snooping 154
- Displaying the Routers List 155
- Clearing the Routers List 156
- Displaying the Hosts List 157
- IGMP Snooping Querier 159
- Assigning 161
- Multiple Queriers 161
- .2 Enabled Enabled Active 163
- .3 Enabled Disabled None 163
- .4 Enabled Enabled Standby 163
- Guidelines 164
- VLAN— VLAN ID 165
- Power Over Ethernet (PoE) 169
- Prioritization 171
- Displaying PoE Port Settings 172
- Chapter 16 179
- Interface— Port ID 182
- RADIUS and TACACS+ Clients 187
- Server 1 190
- Configuring 191
- Remote Manager 191
- Authentication 191
- Using RADIUS 191
- Adding a 193
- RADIUS Server 193
- Using TACACS+ 195
- Chapter 18 201
- Authenticator Role: 203
- Single host mode 203
- Multiple host mode 204
- Multiple supplicant mode 204
- Dynamic VLAN 205
- Assignments 205
- Chapter 19 215
- IP Management 217
- Displaying IPv4 Interfaces 218
- Adding an IPv4 Address 219
- Changing an IPv4 Address 220
- Deleting an IPv4 Address 222
- Displaying the IPv6 Interface 223
- Adding an IPv6 Address 225
- Changing IPv6 Addresses 227
- 5. Click Apply 228
- 6. Click SAVE 228
- Deleting IPv6 Addresses 229
- Access Control Lists (ACL) 231
- Creating an ACL 235
- Assigning an ACL to Ports 239
- Displaying a List of ACLs 241
- Setting Static Routes 243
- Displaying Static Routes 244
- Adding a Static Route 245
- 8. Click Apply 246
- 9. Click SAVE 246
- Deleting a Static Route 247
- Displaying the Routing Table 248
- Quality of Service (QoS) 251
- Creating a QoS Policy 255
- Chapter 23 263
- Changing the RIP Settings 270
- Displaying RIP Statistics 272
- Reloading RIP Statistics 274
- Managing the ARP Table 275
- Displaying the ARP Table 277
- Adding a Static ARP Entry 278
- Deleting ARP Entries 280
- LLDP and LLDP-MED 281
- Optional LLDP-MED TLVs: 283
- Chapter 25: LLDP and LLDP-MED 284
- Disabling LLDP on the Switch 287
- Configuring LLDP on a Port 288
- Selecting LLDP TLVs on a Port 290
- Figure 127. LLDP TLV Page 291
- 5. Click Edit 291
- Creating a Civic 294
- Location Entry 294
- Figure 129. Locations Tab 295
- 5. Click Add 296
- Creating a 298
- Coordinate 298
- Location 298
- Displaying LLDP Statistics 309
- Displaying Location Entries 311
- Displaying 312
- Locations 312
- Displaying ELIN 313
- Displaying the 314
- Basic LLDP 314
- Configuration 314
- Displaying LLDP 315
- Port Assignments 315
- Displaying Port 316
- LLDP-MED TLV 318
- - Model Name 319
- - Asset ID 319
- Chapter 26 321
- Specifying an sFlow Collector 324
- Chapter 26: sFlow 326
- Configuring sFlow on a Port 327
- Enabling sFlow on the Switch 329
- Displaying the sFlow Settings 330
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