Specifications

ExtremeWare XOS 11.0 Concepts Guide 303
18 IP Multicast Routing
This chapter covers the following topics:
• Overview on page 303
• Configuring IP Multicasting Routing on page 306
• Configuration Examples on page 306
For more information on IP multicasting, refer to the following publications:
• RFC 1112—Host Extension for IP Multicasting
• RFC 2236—Internet Group Management Protocol, Version 2
• PIM-DM Version 2—draft_ietf_pim_v2_dm_03
• RFC 2362—Protocol-Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification
The following URL points to the website for the IEFT PIM Working Group:
http://www.ietf.org/html.charters/pim-charter.html
Overview
IP multicast routing is a function that allows a single IP host to send a packet to a group of IP hosts.
This group of hosts can include devices that reside on or outside the local network and within or across
a routing domain.
IP multicast routing consists of the following functions:
• A router that can forward IP multicast packets
• A router-to-router multicast routing protocol (for example, Protocol Independent Multicast (PIM))
• A method for the IP host to communicate its multicast group membership to a router (for example,
Internet Group Management Protocol (IGMP))
NOTE
You should configure IP unicast routing before you configure IP multicast routing.