Planet WGSW-20160HP User Manual Page 158
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User’s Manual of WGSW-20160HP
IGMP Versions 1 and 2
Multicast groups allow members to join or leave at any time. IGMP provides the method for members and multicast routers to
communicate when joining or leaving a multicast group.
IGMP version 1 is defined in RFC 1112. It has a fixed packet size and no optional data.
The format of an IGMP packet is shown below:
IGMP Message Format
Octets
0 8 16 31
Type Response Time
Checksum
Group Address (all zeros if this is a query)
The IGMP Type codes are shown below:
Type Meaning
0x11
Membership Query (if Group Address is 0.0.0.0)
0x11
Specific Group Membership Query (if Group Address is
Present)
0x16 Membership Report (version 2)
0x17 Leave a Group (version 2)
0x12 Membership Report (version 1)
IGMP packets enable multicast routers to keep track of the membership of multicast groups, on their respective sub networks.
The following outlines what is communicated between a multicast router and a multicast group member using IGMP.
A host sends an IGMP “report” to join a group
A host will never send a report when it wants to leave a group (for version 1).
A host will send a “leave” report when it wants to leave a group (for version 2).
Multicast routers send IGMP queries (to the all-hosts group address: 224.0.0.1) periodically to see whether any group members
exist on their sub networks. If there is no response from a particular group, the router assumes that there are no group members
on the network.
The Time-to-Live (TTL) field of query messages is set to 1 so that the queries will not be forwarded to other sub networks.
IGMP version 2 introduces some enhancements such as a method to elect a multicast queried for each LAN, an explicit leave
158
- TABLE OF CONETNTS 3
- 1. INTRODUTION 21
- 1.3 How to Use This Manual 24
- 1.4 Product Features 25
- 1.5 Product Specification 28
- 2. INSTALLATION 31
- 2.1.2 LED Indications 32
- 2.1.3 Switch Rear Panel 33
- 2.2 Install the Switch 34
- 2.2.2 Rack Mounting 35
- 3. SWITCH MANAGEMENT 39
- 3.3 Administration Console 40
- Direct Access 41
- 3.4 Web Management 42
- 4. WEB CONFIGURATION 45
- 4.1 Main Web Page 48
- 4.2 System 50
- 4.2.1 System Information 51
- 4.2.2 IP Configuration 52
- 4.2.3 IPv6 Configuration 53
- 4.2.4 Users Configuration 54
- Add / Edit User 55
- 4.2.5 Privilege Levels 57
- 4.2.6 NTP Configuration 59
- 4.2.7 UPnP 60
- 4.2.8 DHCP Relay 61
- 4.2.9 DHCP Relay Statistics 63
- 4.2.10 CPU Load 65
- 4.2.11 System Log 66
- 4.2.12 Detailed Log 67
- 4.2.13 Remote Syslog 68
- 4.2.14 SMTP Configuration 69
- 4.2.15 Web Firmware Upgrade 70
- 4.2.16 TFTP Firmware Upgrade 71
- 4.2.17 Configuration Backup 71
- 4.2.18 Configuration Upload 74
- 4.2.19 Image Select 75
- 4.2.20 Factory Default 76
- 4.2.21 System Reboot 77
- 4.3.1 SNMP Overview 78
- 4.3.5 SNMPv3 Configuration 83
- 4.4 Port Management 89
- 4.4.3 Port Statistics Detail 92
- 4.4.4 SFP Information 94
- 1000Base-SX 94
- 1000Base-LX 94
- 100Base-FX 94
- 4.4.5 Port Mirror 95
- Mirror Port Configuration 96
- 4.5 Link Aggregation 98
- 4.5.1 Static Aggregation 100
- 4.5.2 LACP Configuration 102
- 4.5.3 LACP System Status 104
- 4.5.4 LACP Port Status 105
- 4.5.5 LACP Port Statistics 106
- 4.6 VLAN 107
- 4.6.2 IEEE 802.1Q VLAN 108
- 4.6.3 VLAN Basic Information 111
- 4.6.5 VLAN Membership 116
- 4.6.6 VLAN Membership Status 117
- 4.6.7 VLAN Port Status 119
- 4.6.8 Private VLAN 120
- 4.6.9 Port Isolation 122
- 4.6.10 VLAN setting example: 124
- 4.6.10.3 Port Isolate 129
- 4.6.11 MAC-based VLAN 130
- 4.6.12 MAC-based VLAN Status 131
- 4.6.13 IP Subnet-based VLAN 132
- 4.6.14 Protocol-based VLAN 133
- 4.7 Spanning Tree Protocol 136
- 4.7.3 Bridge Status 144
- 4.7.5 MSTI Priorities 148
- 4.7.6 MSTI Configuration 149
- MSTI Port Configuration 151
- MSTx MSTI Port Configuration 152
- 4.7.8 Port Status 153
- 4.7.9 Port Statistics 155
- 4.8 Multicast 156
- Type Response Time 158
- 4.8.5 IGMP Snooping Status 165
- 4.8.6 IGMP Group Information 166
- 4.8.7 IGMPv3 Information 167
- 4.8.11 MLD Snooping Status 173
- 4.8.12 MLD Group Information 174
- 4.8.13 MLDv2 Information 175
- 4.8.15 MVR Status 179
- 4.8.17 MVR SFM Information 181
- 4.9 Quality of Service 183
- 4.9.2 Port Policing 184
- 4.9.3 Port Classification 185
- 4.9.4 Port Scheduler 187
- 4.9.5 Port Shaping 188
- 4.9.6 Port Tag Remarking 190
- 4.9.7 Port DSCP 192
- 4.9.8 DSCP-Based QoS 194
- 4.9.9 DSCP Translation 196
- 4.9.10 DSCP Classification 198
- 4.9.11 QoS Control List 199
- 4.9.12 QCL Status 203
- 4.9.14 QoS Statistics 205
- 4.9.16 Voice VLAN OUI Table 208
- 4.10 Access Control Lists 209
- 4.10.3 ACE Configuration 213
- IP Parameters 217
- IPv4 frame 218
- Ethernet Type Parameters 221
- 4.11 Authentication 225
- System Configuration 231
- Port Configuration 234
- Port State 242
- Port Counters 243
- 4.11.7 RADIUS Overview 252
- 4.11.8 RADIUS Details 254
- 4.12 Security 269
- 4.12.2 Access Management 273
- 4.12.4 HTTPs 275
- 4.12.5 SSH 276
- 4.12.6 Port Security Status 277
- 4.12.7 Port Security Detail 279
- 4.12.8 DHCP Snooping 280
- 4.12.12 ARP Inspection 286
- 4.13 Address Table 289
- 4.14 LLDP 295
- Fast start repeat count 298
- Coordinates Location 299
- Civic Address Location 300
- F RFC 2474) 301
- 4.14.4 LLDP-MED Neighbor 304
- 4.14.5 Neighbor 308
- 4.14.6 Port Statistics 309
- 4.15 Network Diagnostics 311
- 4.15.1 Ping 312
- 4.15.2 IPv6 Ping 313
- 4.15.3 Remote IP Ping Test 314
- 4.15.4 Cable Diagnostics 315
- 4.16 Power over Ethernet 317
- 4.16.2 System Configuration 319
- 4.16.3 Port Configuration 322
- 4.16.4 PoE Status 324
- 4.16.5 PoE Schedule 325
- 4.16.6 LLDP PoE Neighbours 327
- 4.17 Loop Protection 330
- 4.18 RMON 333
- 4.18.2 RMON Alarm Detail 335
- 4.18.3 RMON Alarm Status 336
- 4.18.5 RMON Event Detail 337
- 4.18.6 RMON Event Status 338
- 4.18.8 RMON History Detail 340
- 4.18.9 RMON History Status 341
- 5. COMMAND LINE INTERFACE 348
- Configure IP Address 349
- 5.2 Telnet Login 351
- 6. Command Line Mode 352
- 6.1 System Command 353
- 6.2 IP Command 359
- VLAN Status 383
- 6.7 Security Command 386
- Security AAA Statistics 440
- 6.9 Link Aggregation Command 452
- 6.11 LLDP Command 458
- 6.12 LLDPMED Command 462
- LLDPMED Policy Add 464
- 6.13 PoE Command 467
- QoS QCL Add 487
- 6.15 Mirror Command 490
- Mirror Mode 491
- 6.16 Configuration Command 492
- 6.17 Firmware Command 493
- 6.18 UPnP Command 494
- UPnP Advertising Duration 495
- 6.19 MVR Command 496
- 6.20 Voice VLAN Command 501
- 6.21 Loop Protect Command 506
- 6.22 IPMC Command 509
- IPMC Parameter URI 520
- 6.24 SMTP Command 526
- 7. SWITCH OPERATION 529
- 7.5 Auto-Negotiation 530
- What is PoE? 531
- 9. TROUBLE SHOOTING 533
- 12345678 536
- APPENDEX B : GLOSSARY 537
- EC Declaration of Conformity 555
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