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NetAtlas EPON Manager User’s Guide
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Multicast Configuration
This chapter shows you how to configure multicast settings and MVR (Multicast
VLAN Registration) groups.
15.1 Overview
Traditionally, IP packets are transmitted in one of either two 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 Multicast Protocol) is a session-layer protocol used to
establish membership in a multicast group - it is not used to carry user data. Refer
to RFC 1112 and RFC 2236 for information on IGMP versions 1 and 2 respectively.
15.1.1 IP Multicast Addresses
In IPv4, a multicast address allows a device to send packets to a specific group of
hosts (multicast group) in a different subnetwork. A multicast IP address
represents a traffic receiving group, not individual receiving devices. IP addresses
in the Class D range (224.0.0.0 to 239.255.255.255) are used for IP multicasting.
Certain IP multicast numbers are reserved by IANA for special purposes (see the
IANA web site for more information).
15.1.2 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. IGMP snooping generates no additional network
Содержание NetAtlas
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Страница 8: ...Contents Overview NetAtlas EPON Manager User s Guide 8 ...
Страница 16: ...Table of Contents NetAtlas EPON Manager User s Guide 16 ...
Страница 17: ...17 PART I Introduction Introducing the EMS 19 Main Screen 23 ...
Страница 18: ...18 ...
Страница 42: ...Chapter 2 Main Screen NetAtlas EPON Manager User s Guide 42 ...
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Страница 88: ...Chapter 6 Template NetAtlas EPON Manager User s Guide 88 ...
Страница 98: ...Chapter 7 Provisioning NetAtlas EPON Manager User s Guide 98 ...
Страница 114: ...Chapter 8 Performance NetAtlas EPON Manager User s Guide 114 ...
Страница 148: ...Chapter 11 Tools NetAtlas EPON Manager User s Guide 148 ...
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Страница 152: ...Chapter 12 OLT Configuration Overview NetAtlas EPON Manager User s Guide 152 ...
Страница 198: ...Chapter 14 Switch Configuration NetAtlas EPON Manager User s Guide 198 ...
Страница 216: ...Chapter 15 Multicast Configuration NetAtlas EPON Manager User s Guide 216 ...
Страница 238: ...Chapter 17 RMON Configuration NetAtlas EPON Manager User s Guide 238 ...
Страница 248: ...Chapter 18 EPON Configuration NetAtlas EPON Manager User s Guide 248 ...
Страница 290: ...Chapter 19 EPON Profile Configuration NetAtlas EPON Manager User s Guide 290 ...
Страница 313: ...313 PART IV Appendices and Index Alarm Types and Causes 315 SOAP Schema 317 Legal Information 335 Index 337 ...
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Страница 316: ...Appendix A Alarm Types and Causes NetAtlas EPON Manager User s Guide 316 ...
Страница 334: ...Appendix B SOAP Schema NetAtlas EPON Manager User s Guide 334 ...