Cisco pim sparse mode configuration example

1. What is Cisco IP PIM sparse mode?
2. How to configure a Cisco PIM?
3. How does PIM sparse mode work?
4. What is the difference between PIM-SM and SSM?
5. What is the difference between Cisco PIM sparse and dense?
6. What is the difference between PIM sparse mode and dense mode?
7. How to configure pim multicast?
8. What is configuration mode in Cisco?
9. What is the difference between PIM and IGMP proxy?
10. What is PIM SSM?
11. What is IP PIM dense mode?
12. What are the three modes on Cisco?
13. What is PIM passive mode?
14. What does IP PIM passive do?
15. Does PIM use IGMP?
16. What is PIM command?

What is Cisco IP PIM sparse 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.

How to configure a Cisco PIM?

Prerequisites for Configuring PIM

Before configuring PIM stub routing, you must have IP multicast routing configured on both the stub router and the central router. You must also have PIM mode (dense-mode, sparse-mode, or sparse-dense-mode) configured on the uplink interface of the stub router.

How does PIM sparse mode work?

PIM-SM (PIM Sparse Mode) assumes that most hosts do not want to receive multicast traffic. It uses a nonflooding multicast model to direct traffic from the source to the interface when there are multicast receivers in the group. As a result, this model sends traffic only to the routers that specifically request it.

What is the difference between PIM-SM and SSM?

In SSM, receivers can receive traffic only from (S, G) channels to which they are subscribed, whereas in PIM-SM, receivers need not know the IP addresses of sources from which they receive their traffic. In PIM-SSM, the term subscribe message refers to a join message.

What is the difference between Cisco PIM sparse and dense?

Multicast PIM has three modes: PIM sparse mode: this is a “pull” model where we only forward multicast traffic when requested. PIM dense mode: this is a “push” model where we flood multicast traffic everywhere and then prune it when it's not needed.

What is the difference between PIM sparse mode and dense mode?

One of the primary difference between Dense and Sparse mode is the multicast technique used. In Dense mode packets are flooded to the 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.

How to configure pim multicast?

When configuring multicast, First step is enable multicast routing (ip multicast-routing [distributed]) CLI command. “distributed” keyword is required only on switch platforms (3750,3560,etc). Next step is to enable PIM (ip pim sparse-mode) on required layer 3 interfaces.

What is configuration mode in Cisco?

The Line Configuration Mode is used to manage the terminal line characteristics for output formatting. Command Modes. Exec > Global Configuration > Line Configuration.

What is the difference between PIM and IGMP proxy?

IGMP snooping allows a device to only forward multicast streams to the links on which they have been requested. PIM Sparse mode requires specific designated routers to receive notification of all streams destined to specific ranges of multicast addresses.

What is PIM SSM?

The ASM model includes PIM-DM and PIM-SM. The SSM model can be implemented by leveraging part of the PIM-SM technique. It is also called "PIM-SSM." The SSM model provides a solution for source-specific multicast. It maintains the relationship between hosts and routers through IGMPv3.

What is IP 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 are the three modes on Cisco?

There are five command modes: global configuration mode, interface configuration mode, subinterface configuration mode, router configuration mode, and line configuration mode.

What is PIM passive mode?

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.

What does IP PIM passive do?

If the ip pim passive command is configured on an interface enabled for IP multicast, the device will operate this interface in PIM passive mode, which means that the device will not send PIM messages on the interface nor will it accept PIM messages from other devices across this interface.

Does PIM use IGMP?

PIM is sub-divided into two well known modes: PIM Sparse-Mode and Dense-Mode. IGMP is only used by Hosts, and PIM is then used to pass Multicast message traffic. IGMPv2 introduced the “Leave” message to IGMPv1, and is currently the default IGMP mode.

What is PIM command?

PIM is a multicast routing architecture that allows the addition of IP multicast routing on existing IP networks. Multicast IP routing protocols are used to distribute data to multiple recipients.