What is PIM networking?
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 PIM Cisco?
Protocol Independent Multicast or PIM is a group of multicast routing protocols designed for specific network environments. To forward our IP multicast traffic, we need to use a multicast routing protocol. PIM Multicast is the only multicast routing protocol that Cisco IOS devices fully support.
What is the difference between PIM and IGMP?
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.
How does a PIM protocol work?
PIM (Protocol Independent Multicast) is a multicast routing protocol, that is used to send traffic from a single source to multiple destinations across a network. PIM is a collection of three protocols – PIM Sparse Mode, PIM Dense Mode and PIM Bi-directional .
What is the difference between PIM sparse and dense mode?
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 protocols use multicast?
Multicast protocols such as UDP/IP and RTP/IP are used to broadcast data to any number of receiving devices. Unlike unicast TCP data, if a packet is not received, there is no mechanism or attempt to verify that and resend the packet. Multicast is widely used for video and audio data.
Does AWS support multicast?
In 2019, AWS announced multicast support for AWS Transit Gateway. AWS was the first Public Cloud Provider to offer this capability and, in doing so, has helped customers to build multicast applications in the cloud.
Is video conferencing example of IP multicast?
Multicast is often employed in Internet Protocol (IP) applications of streaming media, such as IPTV and multipoint videoconferencing.
How do I enable multicast on my router?
To enable multicast routing, from Policy Manager:
- Select Network > Multicast. The Multicast Setup dialog box appears.
- Select the Enable Multicast Routing check box. This enables the PIM-SM multicast routing protocol globally. You must continue to Step 3 and add multicast interfaces for multicast routing to work.
How does a device join a multicast group?
A device can join a group by sending an IGMP “membership report” message to the group IP address. This packet is received by a multicast router on the segment, and the router does whatever is necessary to start forwarding the data stream to this device.
What is OSPF and BGP?
Both OSPF (Open Shortest Path First) and BGP (Border Gateway Protocol) are routing protocols that make routing decisions across the Internet. They represent a set of rules or algorithms that instruct network routers on how to communicate with each other, so they can redirect traffic to the best path.