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IP Multicast

Cisco IOS IPv6 Multicast Technologies

DATA SHEET

Companies now require the ability to maximize Network investment. IP Multicast applications enable efficient use of existing network infrastructure.

Cisco IOS® Software is the foundation networking software that allows customers to deliver Cisco IP Network Services on a flexible infrastructure that is scalable, reliable, and secure. It provides industry-leading, standards-based technologies proven in use across the broadest and largest networks in operation today.
IP Multicast technologies enable scalable distribution of data, voice, and video streams efficiently to hundreds, thousands, even millions of users. Cisco IOS Multicast enables corporate communications, financial trading, Hoot & Holler, video conferencing, E-learning, commercial Television and Radio over IP, streaming media applications and Multicast enabled VPN services.

MULTICAST ARCHITECTURES

Multicast deployments require three elements: the application, the network infrastructure, and client devices. Cisco IOS Multicast technologies reside in the network infrastructure within Cisco routers and switches. IP Multicast utilizes a single data stream, which is replicated by routers at branch points throughout the network. This mechanism uses bandwidth much more efficiently and greatly decreases load on content servers, reaching more users at a lower cost per user.

BENEFITS OF IP MULTICAST

Cisco IOS Multicast technologies make it easier for enterprises and service providers to leverage their network resources for massively scalable content distribution applications. Cisco IOS Multicast enables customers to:

• Efficiently deploy and scale distributed group applications across the network

• Create a ubiquitous, enterprise-wide content distribution model

• Solve traffic congestion problems

• Allow service providers to deploy value-added services that leverage their existing infrastructure

• IPv6 brings specific multicast benefits such as scope management

Figure 1

IPv6 Multicast Components

Table 1. Cisco IOS Multicast Features

Feature

Description

Protocol Independent Multicast v2 (PIMv2)

Provides intradomain multicast forwarding for all underlying unicast routing protocols

Independent from any underlying unicast protocol such as Open Shortest Path First (OSPF) or Multiprotocol Border Gateway Protocol (MP-BGP)

Supports explicit join (sparse mode), flood-and-prune (dense mode), or hybrid sparse-dense modes

Sparse Mode: relies upon an explicit joining method before attempting to send multicast data to receivers of a multicast group

Multicast Listener Discovery (MLD) v1 and v2

Protocol used by IPv6 hosts to communicate multicast group membership states to local multicast routers

Version 2 of MLD adds source awareness to the protocol. This allows the inclusion or exclusion of sources. MLDv2 is required for Source Specific Multicast (SSM)

Cisco IOS Software also supports the explicit tracking of MLDv2 receivers

PIM Source Specific Multicast

SSM forwarding uses only source-based forwarding trees. SSM range is defined for inter domain use, and Cisco IOS Software allows other groups to be configured using the SSM forwarding model.

Multiprotocol Border Gateway Protocol

Multiprotocol extensions to the BGP unicast inter-domain protocol that carry multicast specific routing information.

Adds capabilities to BGP to enable multicast routing policy throughout the Internet and connect multicast topologies within and between Border Gateway Protocol (BGP) autonomous systems

Carries IP multicast routes. MP-BGP carries multiple instances of routes, for unicast and for multicast routing

PIM uses routes associated with multicast routing to join Reverse Path Forwarding (RPF) decisions at the inter domain borders

PIM Bi-dir

A variant of the PIM, whereby data flows both up and down the same distribution tree

Bi-directional PIM uses only shared tree forwarding, thereby reducing state creation

Boot Strap Router (BSR)

BSR is a mechanism where a PIM router learns the set of group-to-RP mappings required for PIM SM

BSR flooding

The ability to flood BSR messages without processing them

Embedded Rendezvous Point

Utilizes unicast based prefix addressing to include within the group address (the Rendezvous Point address)

Static Rendezvous Point

Allows the manual configuration of the IPv6 PIM SM RP address

Routable Address Option

In IPv6 a router may have multiple addresses on a link. PIM assumes that the neighbor address and the next hop address for Joins or other messages are the same. This feature allows the PIM message to include all the addresses on the interface on which the PIM hello message is advertised

IPv6 multicast over IPv4 tunnels

An aid to IPv6 Multicast deployment

This feature allows IPv6 multicast to be forwarded through IPv4 tunnel

IPv6 multicast over IPv6 tunnels

An aid to IPv6 Multicast deployment

This feature allows IPv6 multicast to be forwarded through a non multicast supportive IPv6 infrastructure

ADDITIONAL INFORMATION

For more information about Cisco IOS Multicast, contact your Cisco account manager or global service manager or visit:
Text Box:  Corporate HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:   408 526-4000    800 553-NETS (6387)Fax: 408 526-4100    European HeadquartersCisco Systems International BVHaarlerbergparkHaarlerbergweg 13-191101 CH AmsterdamThe Netherlandswww-europe.cisco.comTel:  31 0 20 357 1000Fax:    31 0 20 357 1100    Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:    408 526-7660Fax:    408 527-0883    Asia Pacific HeadquartersCisco Systems, Inc.168 Robinson Road#28-01 Capital Tower Singapore 068912www.cisco.comTel: +65 6317 7777Fax: +65 6317 7799Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed on the Cisco Web site at www.cisco.com/go/offices.Argentina · Australia · Austria · Belgium · Brazil · Bulgaria · Canada · Chile · China PRC · Colombia · Costa Rica · Croatia · Cyprus  Czech Republic · Denmark · Dubai, UAE · Finland · France · Germany · Greece · Hong Kong SAR · Hungary · India · Indonesia · Ireland Israel · Italy · Japan · Korea · Luxembourg · Malaysia · Mexico · The Netherlands · New Zealand · Norway · Peru · Philippines · Poland Portugal · Puerto Rico · Romania · Russia · Saudi Arabia · Scotland · Singapore · Slovakia · Slovenia · South Africa · Spain · Sweden Switzerland · Taiwan · Thailand · Turkey · Ukraine · United Kingdom · United States · Venezuela · Vietnam · Zimbabwe                      Copyright  2004 Cisco Systems, Inc. All rights reserved. Cisco, Cisco IOS, Cisco Systems, and the Cisco Systems logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0402R)    204025_ETMG_AE_08.04Printed in the USA Text Box:  Corporate HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:    408 526-4000    800 553-NETS (6387)Fax: 408 526-4100    European HeadquartersCisco Systems International BVHaarlerbergparkHaarlerbergweg 13-191101 CH AmsterdamThe Netherlandswww-europe.cisco.comTel:  31 0 20 357 1000Fax:    31 0 20 357 1100    Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAwww.cisco.comTel:    408 526-7660Fax:    408 527-0883    Asia Pacific HeadquartersCisco Systems, Inc.168 Robinson Road#28-01 Capital Tower Singapore 068912www.cisco.comTel: +65 6317 7777Fax: +65 6317 7799Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed on the Cisco Web site at www.cisco.com/go/offices.Argentina · Australia · Austria · Belgium · Brazil · Bulgaria · Canada · Chile · China PRC · Colombia · Costa Rica · Croatia · Cyprus  Czech Republic · Denmark · Dubai, UAE · Finland · France · Germany · Greece · Hong Kong SAR · Hungary · India · Indonesia · Ireland Israel · Italy · Japan · Korea · Luxembourg · Malaysia · Mexico · The Netherlands · New Zealand · Norway · Peru · Philippines · Poland Portugal · Puerto Rico · Romania · Russia · Saudi Arabia · Scotland · Singapore · Slovakia · Slovenia · South Africa · Spain · Sweden Switzerland · Taiwan · Thailand · Turkey · Ukraine · United Kingdom · United States · Venezuela · Vietnam · Zimbabwe                      Copyright  2004 Cisco Systems, Inc. All rights reserved. Cisco, Cisco IOS, Cisco Systems, and the Cisco Systems logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0402R)    204025_ETMG_AE_08.04Printed in the USA