Cisco Systems CL-28826-01 Configuring Multicast Policies on Firewall Devices

CHAP TER

53-1

User Guide for Cisco Security Manager 4.4

OL-28826-01

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, page53-2

•Configuring Multicast Routes, page 53-8

•Configuring Multicast Boundary Filters, page 53-9

•Configuring PIM, page 53-11

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, page53-11 for more information.