What is ip PIM sparse dense mode?
The ‘ip pim sparse-dense mode’ command enables PIM to operate in sparse or dense mode, depending on the multicast group. When you enable sparse-dense mode, the interface is treated as dense mode if the multicast group is in dense mode. If the group is in sparse mode, the interface is treated in sparse mode.
What is PIM dense mode?
Protocol Independent Multicast – Dense Mode (PIM-DM) is a data-driven multicast routing protocol, which builds source-based multicast distribution trees that operate on the Flood- and-Prune principle. It requires unicast-reachability information, but does not depend on a specific unicast routing protocol.
What is the difference between sparse and dense mode?
In Dense mode the packets flooded to entire network and then branches where there are no receivers are eliminated. In Sparse mode packets branches distribution growth as new nodes join the multicast group.
What is IP PIM sparse mode Cisco?
ip pim sparse-mode command enables your interface (SVI) to participate in sparse mode multicast traffic transmission and multicast shared tree. this way clients in that VLAN are able to receive multicast traffic from different multicast groups (sources) although you can controll it by configuring other parameters.
What does PIM do multicast?
Protocol-Independent Multicast (PIM) is a family of multicast routing protocols for Internet Protocol (IP) networks that provide one-to-many and many-to-many distribution of data over a LAN, WAN or the Internet.
What is dense mode multicast?
Dense mode multicast is one mode that multicast can use to construct a tree for sending packets to the multicast subscribers. It is an alternative to sparse mode. The basic assumption behind dense mode is that the multicast packet stream has receivers at most locations. Sparse mode assumes relatively fewer receivers.
What does IP PIM passive do?
PIM Passive allows you to specify that the interface is “passive” in regards to PIM. No PIM control packets are sent or processed (if received), but hosts can still send and receive multicast traffic and IGMP control traffic on the interface.
How does PIM Sparse Mode work?
PIM Sparse Mode (PIM-SM) is a multicast routing protocol designed on the assumption that recipients for any particular multicast group will be sparsely distributed throughout the network. In other words, it is assumed that most subnets in the network will not want any given multicast packet.
What does * g mean in multicast?
In (*,G) notation, the asterisk (*) is a wild card used to denote the state that applies to any source sending to group G. A multicast group can have more than one source. If two hosts are both acting as sources for the group 224.1. 1.2, (*,224.1.
What is the role of the RP in PIM sparse mode?
PIM Sparse Mode uses a special router called a Rendezvous Point (RP) to connect the flow source or multicast tree to the router next to the wannabe receiver. The RP is typically used only temporarily, as we’ll see below. There can be different RP’s for different multicast groups, which is one way to spread the load.
What is IP PIM SSM range?
Generally, you will want to enable PIM-SSM for it’s default group range (232.0. 0.0/8).