Configuring Igmp (Nsm Procedure) - Juniper NETWORK AND SECURITY MANAGER 2010.4 - CONFIGURING SCREENOS DEVICES GUIDE REV 01 Manual

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Configuring IGMP (NSM Procedure)

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A mechanism between hosts and routers to communicate group membership
information. Security devices support the Internet Group Management Protocol (IGMP)
versions 1, 2, and 3.
A multicast routing protocol to populate the multicast route table and forward multicast
traffic to hosts throughout the network. Security devices support the Protocol
Independent Multicast-Sparse Mode (PIM-SM) protocol. Alternatively, you can use
IGMP proxy to transmit multicast information between routers without the CPU
overhead of a multicast routing protocol
NOTE: Multicast routing is only supported in ScreenOS 5.1 and later.
This topic describes the basic steps to configure the following multicast protocols:
Configuring IGMP (NSM Procedure) on page 338
Configuring IGMP Proxy (NSM Procedure) on page 339
Configuring PIM Sparse Mode (NSM Procedure) on page 341
NOTE: The NSM UI displays the multicast parameters and multicast static
routes that you configure. It does not display dynamic information about
multicast protocols at the device level. (For example, whether or not an
interface is a querier in IGMP.) For this information, you must issue the
appropriate CLI get commands from the device.
RIP Overview on page 321
BGP Overview on page 327
On security devices, you must explicitly enable IGMP in Router mode on the interfaces
that are connected to hosts. Security devices support the following Internet Group
Management Protocol (IGMP) versions:
IGMPv1, as defined in RFC 1112, Host Extensions for IP Multicasting, defines the basic
operations for multicast group memberships.
IGMPv2, as defined in RFC 2236, Internet Group Management Protocol, Version 2,
expands on the functionality of IGMPv1.
IGMPv3, as defined in RFC 3376, Internet Group Management Protocol, Version 3, adds
support for source filtering. Hosts running IGMPv3 indicate which multicast groups
they want to join and the sources from which they expect to receive multicast traffic.
IGMPv3 is required when you run Protocol Independent Multicast in source-specific
multicast (PIM-SSM) mode.
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