Manual
Table Of Contents
- 1. INTRODUTION
- 2. INSTALLATION
- 3. SWITCH MANAGEMENT
- 4. WEB CONFIGURATION
- 4.1 Main WEB PAGE
- 4.2 System
- 4.3 Simple Network Management Protocol
- 4.4 Port Management
- 4.5 Link Aggregation
- 4.6 VLAN
- 4.7 Rapid Spanning Tree Protocol
- 4.8 Quality of Service
- 4.9 Multicast
- 4.10 IEEE 802.1X Network Access Control
- 4.10.1 Understanding IEEE 802.1X Port-Based Authentication
- 4.10.2 802.1X System Configuration
- 4.10.3 802.1X and MAC-Based Authentication Port Configuration
- 4.10.4 802.1X Port Status
- 4.10.5 802.1X and MAC-Based Authentication Statistics
- 4.10.6 Windows Platform RADIUS Server Configuration
- 4.10.7 802.1X Client Configuration
- 4.11 Access Control Lists
- 4.12 Address Table
- 4.13 Port Security (To be Continued)
- 4.14 LLDP
- 4.15 Network Diagnastics
- 4.16 Stacking – SGSW-24040 / SGSW-24040R
- 4.17 Power over Ethernet (SGSW-24040P / SGSW-24040P4)
- 5. COMMAND LINE INTERFACE
- 6. Command Line Mode
- 6.1 System Command
- 6.2 Port Management Command
- 6.3 Link Aggregation Command
- 6.4 VLAN Configuration Command
- 6.5 Spanning Tree Protocol Command
- 6.6 Multicast Configuration Command
- 6.7 Quality of Service Command
- 6.8 802.1x Port Access Control Command
- 6.9 Access Control List Command
- 6.10 MAC Address Table Command
- 6.11 LLDP Command
- 6.12 Stack Management Command
- 6.13 Power over Ethernet Command
- 7. SWITCH OPERATION
- 8. POWER OVER ETHERNET OVERVIEW
- 9. TROUBLE SHOOTING
- APPENDEX A
- APPENDEX B : GLOSSARY
User’s Manual of WGSW-24040 Series
SGSW-24040/24240 Series
138
message, and query messages that are specific to a given group.
The states a computer will go through to join or to leave a multicast group are shown below:
Non-Member
Delaying Member Idle Member
Leave Group
Leave Group
(Stop Timer)
Join Group
(Send Report,
Start Timer)
Query Received
(Start Timer)
Report Received
(Stop Timer)
Timer Expried
(Send report)
Figure 4-9-4 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, along with a multicast routing protocol such as
DVMRP or PIM, to support IP multicasting across the Internet.