GS-4012F User’s Guide
74
Chapter 7 Basic Setting
7.5 IGMP Snooping
A switch can passively snoop on IGMP Query, Report and Leave (IGMP version 2) packets
transferred between IP multicast routers/switches and IP multicast hosts to learn the IP
multicast group membership. It checks IGMP packets passing through it, picks out the group
registration information, and configures multicasting accordingly. IGMP snooping allows the
switch to learn multicast groups without you having to manually configure them.
The switch forwards multicast traffic destined for multicast groups (that it has learned from
IGMP snooping or that you have manually configured) to ports that are members of that
group. The switch discards multicast traffic destined for multicast groups that it does not
know. IGMP snooping generates no additional network traffic, allowing you to significantly
reduce multicast traffic passing through your switch.
7.6 Switch Setup Screen
Click
Basic Setting
and then
Switch Setup
in the navigation panel to display the screen as
shown. The VLAN setup screens change depending on whether you choose
802.1Q
or
Port
Based
in the
VLAN Type
field in this screen. Refer to the chapter on VLAN.
Figure 27
Switch Setup
The following table describes the labels in this screen
Summary of Contents for GS-4012F
Page 1: ...GS 4012F Ethernet Switch User s Guide Version 3 60 4 2005...
Page 19: ...GS 4012F User s Guide 18 Table of Contents...
Page 25: ...GS 4012F User s Guide 24 List of Figures...
Page 29: ...GS 4012F User s Guide 28 List of Tables...
Page 39: ...GS 4012F User s Guide 38 Chapter 1 Getting to Know Your Switch...
Page 43: ...GS 4012F User s Guide 42 Chapter 2 Hardware Installation and Connection...
Page 49: ...GS 4012F User s Guide 48 Chapter 3 Hardware Overview...
Page 63: ...GS 4012F User s Guide 62 Chapter 5 Initial Setup Example...
Page 69: ...GS 4012F User s Guide 68 Chapter 6 System Status and Port Statistics...
Page 101: ...GS 4012F User s Guide 100 Chapter 11 Spanning Tree Protocol...
Page 113: ...GS 4012F User s Guide 112 Chapter 15 Link Aggregation...
Page 117: ...GS 4012F User s Guide 116 Chapter 16 Port Authentication...
Page 125: ...GS 4012F User s Guide 124 Chapter 18 Classifier Figure 53 Classifier Example...
Page 131: ...GS 4012F User s Guide 130 Chapter 19 Policy Rule Figure 56 Policy Example...
Page 135: ...GS 4012F User s Guide 134 Chapter 20 Queuing Method...
Page 141: ...GS 4012F User s Guide 140 Chapter 21 VLAN Stacking...
Page 183: ...GS 4012F User s Guide 182 Chapter 30 VRRP...
Page 203: ...GS 4012F User s Guide 202 Chapter 32 Access Control...
Page 205: ...GS 4012F User s Guide 204 Chapter 33 Diagnostic...
Page 219: ...GS 4012F User s Guide 218 Chapter 38 Routing Table...
Page 267: ...GS 4012F User s Guide 266 Chapter 40 Command Examples...
Page 277: ...GS 4012F User s Guide 276 Chapter 41 IEEE 802 1Q Tagged VLAN Commands...
Page 287: ...GS 4012F User s Guide 286 Chapter 42 Troubleshooting...
Page 291: ...GS 4012F User s Guide 290 Product Specifications...