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What is ip PIM sparse dense mode?
PIM can operate in dense mode or sparse mode. The router can also handle both sparse groups and dense groups at the same time (sparse-dense mode). The mode determines how the router populates its multicast routing table and how the router forwards multicast packets it receives from its directly connected LANs.
What is Cisco ip PIM Sparse Mode?
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 is a characteristic of PIM dense mode?
Feature Overview PIM dense mode builds source-based multicast distribution trees that operate on a flood and prune principle. Multicast packets from a source are flooded to all areas of a PIM dense mode network.
What is IP PIM used for?
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.
How does PIM Sparse Mode work?
A Protocol Independent Multicast (PIM) sparse-mode domain uses reverse-path forwarding (RPF) to create a path from a data source to the receiver requesting the data. When a receiver issues an explicit join request, an RPF check is triggered.
What is IP PIM SSM range?
The software allows SSM configuration for an arbitrary subset of the IP multicast address range from 224.0. 0.0 through 239.255. 255.255.
How does PIM dense mode work?
PIM Dense Mode (PIM-DM) uses dense multicast routing. It implicitly builds shortest-path trees by flooding multicast traffic domain wide, and then pruning back branches of the tree where no receivers are present. PIM-DM is straightforward to implement but generally has poor scaling properties.
How does multicast IP work?
Using multicast, a source can send a single copy of data to a single multicast address, which is then distributed to an entire group of recipients. A source host sends data to a multicast group by simply setting the destination IP address of the datagram to be the multicast group address.
How does PIM Sparse-Mode work?
Does SSM need Rp?
That is, SSM does not require an RP, so there is no need for an RP mechanism such as Auto-RP, MSDP, or bootstrap router (BSR). For groups within the SSM range, (S, G) channel subscriptions are accepted through IGMPv3 INCLUDE mode membership reports.
What does Sparse Mode do on IP Pim?
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.
Which is the third mode of Pim dense mode?
PIM dense mode: this is a “push” model where we flood multicast traffic everywhere and then prune it when it’s not needed. The third one is PIM sparse-dense mode where we can use sparse or dense mode for each multicast group.
What’s the difference between dense and Sparse Mode?
Although, I know its not considered as efficient, multicast traffic should still be forwarded through normal dense mode operation. Sparse-dense mode, as the name implies, allows the interface to operate on a per-group basis in either sparse or dense mode. A group specified as dense is not mapped to an RP.
How is an interface treated in Sparse Mode?
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. You must have a rendezvous point (RP) if the interface is in sparse-dense mode and you want to treat the group as a sparse group.