# Configuring PIM for IPv4 Multicast

The Protocol Independent Multicast (PIM) protocol is a collection of multicast routing protocols that enables multicast routers to identify other multicast routers to receive packets.

This chapter describes how to configure PIM for IPv4 on E Series routers; it contains the following sections:

- Overview
- Platform Considerations
- References
- Before You Begin
- Enabling PIM on a VR
- Disabling PIM on a VR
- Enabling PIM on an Interface
- Setting a Priority to Determine the Designated Router
- Configuring the PIM Join/Prune Message Interval
- Configuring an RP Router for PIM Sparse Mode and PIM Sparse-Dense Mode
- Configuring BSR and RP Candidates for PIM Sparse Mode
- Migrating to BSR from Auto-RP
- Switching to an SPT for PIM Sparse Mode
- Creating Multicast VPNs
- Using PIM Sparse Mode Join Filters
- Configuring PIM SSM
- Configuring the BFD Protocol for PIM
- Removing PIM
- Resetting PIM Counters and Mappings
- Monitoring PIM