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CHAPTER
53-1
User Guide for Cisco Security Manager 4.4
OL-28826-01
53
Configuring Multicast Policies on Firewall
Devices
The Multicast section contains pages for defining IP multicast routing on security devices. Multicast
routing is supported in single-context, routed mode only.
Enabling multicast routing enables IGMP and PIM on all interfaces by default. Internet Group
Management Protocol (IGMP) is used to learn whether members of a group are present on directly
attached subnets. Hosts join multicast groups by sending IGMP report messages. Protocol Independent
Multicast (PIM) is used to maintain forwarding tables for multicast datagrams.
Note Only the UDP transport layer is supported for multicast routing.
This chapter contains the following topics:
• Enabling PIM and IGMP, page 53-1
• Configuring IGMP, page 53-2
• Configuring Multicast Routes, page 53-8
• Configuring Multicast Boundary Filters, page 53-9
• Configuring PIM, page 53-11
Enabling PIM and IGMP
The Enable PIM and IGMP page lets you enable or disable Internet Group Management Protocol
(IGMP) and Protocol Independent Multicast (PIM) on all interfaces on the security appliance. IGMP is
used to learn whether members of a group are present on directly attached subnets. Hosts join multicast
groups by sending IGMP report messages. PIM is used to maintain forwarding tables to forward
multicast datagrams.
When Enable PIM and IGMP is checked on this page, PIM and IGMP are enabled on all interfaces on
the security appliance. Deselect the option to disable PIM and IGMP on all interfaces.
Note You can disable PIM and IGMP on a per-interface basis; see IGMP Page - Protocol Tab, page 53-3 and
PIM Page - Protocol Tab, page 53-11 for more information.