User's Manual
Table Of Contents
- 1. INTRODUCTION
- 2. INSTALLATION
- 3. SWITCH MANAGEMENT
- 4. WEB CONFIGURATION
- 4.1 Main Web Page
- 4.2 System
- 4.2.1 Management
- 4.2.1.1 System Information
- 4.2.1.2 IP Configuration
- 4.2.1.3 IP Status
- 4.2.1.4 ARP
- 4.2.1.5 Users Configuration
- 4.2.1.6 Privilege Levels
- 4.2.1.7 NTP Configuration
- 4.2.1.8 Time Configuration
- 4.2.1.9 Time Configuration
- 4.2.1.10 UPnP
- 4.2.1.11 CPU Load
- 4.2.1.12 System Log
- 4.2.1.13 Detailed Log
- 4.2.1.14 Remote Syslog
- 4.2.1.15 SMTP Configuration
- 4.2.2 SNMP
- 4.2.3 RMON
- 4.2.4 DHCP Relay
- 4.2.5 DHCP server
- 4.2.6 Remote Management
- 4.2.1 Management
- 4.3 Switching
- 4.3.1 Port Management
- 4.3.2 Link Aggregation
- 4.3.3 VLANs
- 4.3.4 VLAN Translation
- 4.3.5 VLAN Translation Mappings
- 4.3.6 Private VLANs
- 4.3.7 VCL
- 4.3.8 GVRP
- 4.3.9 MRP
- 4.3.10 Spanning Tree
- 4.3.11 IGMP Snooping
- 4.3.12 MLD Snooping
- 4.3.13 MVR (Multicast VLAN Registration)
- 4.3.14 LLDP
- 4.3.15 MAC Address Table
- 4.3.16 Loop Protection
- 4.3.17 UDLD
- 4.3.18 Link OAM
- 4.3.19 CFM
- 4.3.20 sFlow
- 4.4 Routing
- 4.5 QoS
- 4.6 Security
- 4.7 POE
- 4.8 Ring
- 4.9 ONVIF
- 4.10 Maintenance
- 5. SWITCH OPERATION
- 6. TROUBLESHOOTING
- APPENDIX A: Networking Connection
- APPENDIX B : GLOSSARY
User’s Manual of GS-6320 and MGS-6320 Managed Switches
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IGMP State Transitions
IGMP Querier
A router, or multicast-enabled switch, can periodically ask their hosts if they want to receive multicast traffic. If there is more
than one router/switch on the LAN performing IP multicasting, one of these devices is elected “querier” and assumes the
role of querying the LAN for group members. It then propagates the service requests on to any upstream multicast
switch/router to ensure that it will continue to receive the multicast service.
Multicast routers use this information, al
ong with a multicast routing protocol such as
DVMRP or PIM, to support IP multicasting across the Internet.