IP Multicast

IP Multicast Basic Configuration: This chapter describes multicast addresses, applications and functions of multicast protocols, and typical multicast configurations on an IPv4 network.

IGMP Configuration: To manage multicast group members on a local network, configure IGMP on interfaces that connect multicast devices to user network segments.

PIM Configuration: The PIM protocol implements multicast routing and data forwarding in an AS.

MSDP Configuration: The MSDP protocol implements multicast routing and data forwarding between PIM-SM domains and Anycast-RP in a PIM-SM domain.

MBGP Configuration: Multicast BGP (MBGP) transmits routing information between ASs to implement inter-AS multicast services.

IPv4 Multicast Routing Management Configuration: The system synchronously maintains multiple multicast routing protocols, and controls multicast routing and forwarding by exchanging information between the control plane and forwarding plane.

Rosen MVPN Configuration: With wide applications of the VPN technology, the requirements for operating multicast services over the VPN are increasingly stringent. Multicast VPN is mainly used in the Border Gateway Protocol (BGP)/Multiprotocol Label Switching (MPLS) VPN for multicast data transmission.

mLDP In-Band MVPN Configuration: mLDP in-band MVPN uses the Opaque value carried in mLDP P2MP Label Mapping messages to encapsulate the (S, G) information in C-multicast PIM Join messages. In this manner, C-multicast route advertisement and tunnel establishment are integrated.

MLD Configuration: To manage multicast group members on a local IPv6 network, configure MLD on interfaces that connect a multicast device to user network segments.

IPv6 PIM Configuration: IPv6 PIM is used to advertise IPv6 multicast routes and forward data in an AS.

IPv6 Multicast Routing Management Configuration: IPv6 multicast routing management enables a system to maintain multiple IPv6 multicast routing protocols and control multicast routing and forwarding by exchanging messages between the control plane and the forwarding plane.

IPv4 User-Side Multicast Configuration: Configuring IPv4 user-side multicast on a BRAS enables the BRAS to identify users, so that the BRAS can replicate the data flow of a multicast program only for users who are requiring the multicast program. User-side multicast implements user-based multicast service control and management for carriers.

IPv6 User-Side Multicast Configuration: Configuring IPv6 user-side multicast on a BRAS enables the BRAS to identify users and to implement user-based multicast service control and management.

Controllable Multicast Configuration: With the large-scaled deployment of IPTV services, telecommunication operators have to authenticate users. Users have the rights to access multicast programs only after they pay the fee.

Layer 2 Multicast Configuration: This chapter describes how to configure Layer 2 multicast and provides configuration examples. Layer 2 multicast is used to transmit multicast data at the data link layer. It uses Internet Group Management Protocol (IGMP) snooping to listen to IGMP messages exchanged between an upstream device and hosts attached to the device and then use these messages to create a Layer 2 multicast forwarding table, achieving on-demand multicast data transmission at the data link layer. If both Layer 2 multicast and Layer 3 multicast are configured, ensure the consistency between Layer 2 multicast configurations and Layer 3 multicast configurations. If Layer 2 multicast configurations are inconsistent with Layer 3 multicast configurations, Layer 2 multicast will inherit Layer 3 multicast configurations. As a result, the Layer 2 multicast configurations will become unavailable.