ZyXEL XGS1210-12 User Guide - Page 49

Chapter 13 IGMP Snooping

XGS1210-12 User’s Guide

50

C

HAPTER

13

IGMP Snooping

13.1

Overview

This chapter shows you how to configure the various multicast features.

Traditionally, IP packets are transmitted in one of either 2 ways - Unicast (1 sender to 1 recipient) or

Broadcast (1 sender to everybody on the network). Multicast delivers IP packets to just a group of hosts

on the network.

IGMP (Internet Group Management Protocol) is a network-layer protocol used to establish membership

in a multicast group - it is not used to carry user data. Refer to RFC 1112, RFC 2236 and RFC 3376 for

information on IGMP versions 1, 2, and 3 respectively.

Note: You must enable IGMP snooping to use the IPTV service.

IGMP snooping is enabled, and the

IGMP Static Router Port

is set to

Auto

by default. The

port can be used as an IGMP router port.

IGMP Snooping

The Switch can passively snoop on IGMP packets transferred between IP multicast routers/switches and

IP multicast hosts to learn the IP multicast group membership. It checks the 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. IGMP

snooping generates no additional network traffic, allowing you to significantly reduce multicast traffic

passing through your Switch.

13.2

IGMP Snooping Settings

Click

IGMP Snooping

in the navigation panel to display the screen as shown next.

Section	Page
XGS1210-12	1
Document Conventions	3
Contents Overview	4
Table of Contents	5
User’s Guide	8
Getting to Know Your Switch	9
1.1 Introduction	9
1.2 Applications	9
1.2.1 Multi-Gigabit	9
1.2.2 Backbone Application	10
1.2.3 Bridging Application	11
1.2.4 VLAN Application Example	11
1.3 Way to Manage the Switch	12
1.4 Good Habits for Managing the Switch	12
Hardware Installation	13
2.1 Installation Scenarios	13
2.1.1 Desktop Installation Procedure	13
2.1.2 Wall Mounting	13
Hardware Panels	15
3.1 Front Panel	15
3.2 Rear Panel	15
3.2.1 Power Connector	15
3.3 LEDs	16
Web Configurator	17
4.1 Overview	17
4.2 System Login	17
4.3 Web Configurator Layout	18
4.3.1 Change Your Password	20
4.4 Switch Lockout/Resetting the Switch	21
4.5 Logging Out of the Web Configurator	22
Initial Setup Example	23
5.1 Overview	23
5.1.1 Change the IP Address	23
5.1.2 Changing the Password	25
Tutorials	27
6.1 Overview	27
6.2 Creating a VLAN	27
6.3 Setting Port VID	29
Technical Reference	31
System	32
7.1 Overview	32
7.2 System Settings	32
Port	35
8.1 Overview	35
8.1.1 What You Need to Know	35
8.2 Port Settings	36
VLAN	38
9.1 Overview	38
9.1.1 What You Need to Know	38
9.2 VLAN Settings	39
Link Aggregation	41
10.1 Overview	41
10.2 Link Aggregation	41
Mirroring	43
11.1 Overview	43
11.2 Mirroring Settings	43
QoS	45
12.1 Overview	45
12.2 What You Need to Know	45
12.2.1 Port-Based QoS	45
12.2.2 IEEE 802.1p QoS	45
12.2.3 Weighted Round Robin Scheduling (WRR)	46
12.3 Port-Based QoS	46
12.4 IEEE 802.1p QoS	47
IGMP Snooping	49
13.1 Overview	49
13.2 IGMP Snooping Settings	49
Management	51
14.1.1 What You Need to Know	51
14.2.1 Firmware Upgrade	53
Troubleshooting	55
15.1 Power, Hardware Connections, and LEDs	55
15.2 Switch Access and Login	56
15.3 Switch Configuration	57
Customer Support	58
Legal Information	64

ZyXEL XGS1210-12 User Guide - Page 49

IGMP Snooping, 13.1 Overview, 13.2 IGMP Snooping Settings

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