This MIB module defines management objects for the
Multicast Switching features on Cisco Layer 2/3 
devices.

Definition of some of the terms used in this MIB:

    Multicast Replication - The mechanism by which a 
    system creates one or more copies of a multicast 
    packet for forwarding.

    Ingress Multicast Replication - A type of multicast
    replication where the replication engine on the 
    ingress module always performs the whole replication.

    Egress Multicast Replication - A type of multicast
    replication where the replication engines on both
    the ingress and egress modules perform the replication. 

    VPN  -  Virtual private network.
    A secure IP-based network that shares resources 
    with one or more physical networks.

    VRF  - VPN Routing and Forwarding instance
    Consists of an IP routing table, a derived 
    forwarding table, a set of interfaces that use
    the forwarding table, and a set of rules and 
    routing protocols that determine what goes into 
    the forwarding table. 

    MVPN - Multicast VPN

    MVRF - Multicast VRF
    A VRF which has multicast routing enabled.

    VRF-lite -  A feature that enables a service 
    provider to support two or more VPNs, where IP 
    addresses can be overlapped among the VPNs.

    LTL - Local Target Logic
    A hardware resource table to aid in switching.

    OIF - Outgoing Interface
    The interface through which packets are 
    forwarded out.

    DF - Designated Forwarder.