# Configuring IPv4 Multicast

IPv4 multicast enables a device to send packets to a group of hosts rather than to a list of individual hosts. This chapter describes how to configure IP multicast on the E Series router; it contains the following sections:

- IPv4 Multicast Overview
- Platform Considerations
- References
- Before You Begin
- Configuring the Switch Fabric Bandwidth
- Enabling IP Multicast
- Defining Static Routes for Reverse-Path Forwarding
- Displaying Available Routes for Reverse-Path Forwarding
- Enabling and Disabling RPF Checks
- Using Unicast Routes for RPF
- Defining Permanent IP Multicast Forwarding Entries
- Defining a Multicast Bandwidth Map
- Configuring Multicast QoS Adjustment
- Activating Multicast QoS Adjustment Functions
- Configuring Hardware Multicast Packet Replication
- Blocking and Limiting Multicast Traffic
- Deleting Multicast Forwarding Entries
- Monitoring IP Multicast Settings
- BGP Multicasting
- Investigating Multicast Routes