December 2005 © Foundry Networks, Inc. 19 - 1
Chapter 19
Configuring IP Multicast Protocols
This chapter describes how to configure Foundry Layer 3 Switches for Protocol Independent Multicast (PIM) and
Distance Vector Multicast Routing Protocol (DVMRP). Foundry Layer 3 Switches support the following IP
multicast versions:
• Internet Group Management Protocol (IGMP) V1 and V2
• PIM Dense mode (PIM DM) V1 (draft-ietf-pim-dm-05) and V2 (draft-ietf-pim-v2-dm-03)
• PIM Sparse mode (PIM SM) V2 (RFC 2362)
• DVMRP V2 (RFC 1075)
NOTE: Each of the multicast protocols uses IGMP. IGMP is automatically enabled on an interface when you
configure PIM or DVMRP on an interface and is disabled on the interface if you disable PIM or DVMRP on the
interface.
NOTE: This chapter applies only to IP multicast routing. To configure Layer 2 IP multicast features, see
“Configuring IP Multicast Traffic Reduction” on page 18-1.