What is PIM SSM range?

What is PIM SSM range?

PIM SSM uses the PIM sparse-mode functionality to create an SPT between the receiver and the source, but builds the SPT without the help of an RP. By default, the SSM group multicast address is limited to the IP address range from 232.0. 0.0 through 232.255. 255.255.

What is the difference between IGMP and PIM?

Important is the Note: To use PIM snooping, you must enable IGMP snooping on the switch. IGMP snooping restricts multicast traffic that exits through the LAN ports to which hosts are connected. IGMP snooping does not restrict traffic that exits through the LAN ports to which one or more multicast routers are connected.

What is a PIM message?

Protocol Independent Multicast (PIM) is a collection of multicast routing protocols, each optimized for a different environment. PIM control messages are sent as raw IP datagrams (protocol number 103), either multicast to the link-local ALL PIM ROUTERS multicast group, or unicast to a specific destination.

What is difference between ASM and SSM?

In ASM, receivers express interest only in a given multicast group address. In contrast, with Source-Specific Multicast (SSM) the specific source(s) that may send traffic to the group are known in advance. In SSM, receivers express interest both in a given multicast address and specific associated source address(es).

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 SSM mode?

Source-specific multicast (SSM) is a method of delivering multicast packets in which the only packets that are delivered to a receiver are those originating from a specific source address requested by the receiver. By so limiting the source, SSM reduces demands on the network and improves security.

Why is PIM-SM more efficient?

PIM-SM uses shared trees by default and implements source-based trees for efficiency; it assumes that no hosts want the multicast traffic unless they specifically ask for it. It creates a shared distribution tree centered on a defined rendezvous point (RP).

Is video conferencing an example of IP multicast?

Multicast is often employed in Internet Protocol (IP) applications of streaming media, such as IPTV and multipoint videoconferencing.

What is a PIM domain?

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 do you set up PIM?

To configure PIM join suppression on a non-RP downstream router in the multicast LAN:

1. Configure PIM sparse mode on the interfaces.
2. Enable the join suppression timer.
3. Configure the prune override interval value.
4. Configure the propagation delay of the link.
5. (Optional) Configure PIM tracing operations.

What is ASM in multicast?

Any-source multicast (ASM) is the older and more usual form of multicast where multiple senders can be on the same group/channel, as opposed to source-specific multicast where a single particular source is specified.

What is an ASM Cisco?

Any-Source-Multicast (popularly known as ASM) is where receiver does not know the sender beforehand. Receiver uses IGMP to subscribe to all the traffic that is being sent to a multicast group address. Routers between source and receiver use multicast routing protocol like PIM-SM to create multicast forwarding tree.

How does PIM source-specific multicast ( SSM ) work?

PIM source-specific multicast (SSM) uses a subset of PIM sparse mode and IGMP version 3 (IGMPv3) to allow a client to receive multicast traffic directly from the source. PIM SSM uses the PIM sparse-mode functionality to create an SPT between the receiver and the source, but builds the SPT without the help of an RP.

Can a PIM Sparse Mode be used for SSM?

SSM can be implemented using a subset of Protocol Independent Multicast (PIM) derived from PIM sparse mode (PIM-SM), dubbed PIM-SSM. Once you have PIM-SM running, PIM-SSM is trivial to enable. This is done by specifying a range of addresses for which PIM-SSM will be used.

When to enable or disable Pim-SSM in packetlife?

Once you have PIM-SM running, PIM-SSM is trivial to enable. This is done by specifying a range of addresses for which PIM-SSM will be used. Generally, you will want to enable PIM-SSM for it’s default group range (232.0.0.0/8).

Which is the source address of a SSM channel?

An SSM group, called a channel, is identified as (S,G) where S is the source address and G is the group address. This is in contrast to the definition of an ASM multicast route written as (*,G). IANA has reserved for SSM the IPv4 address range 232.0.0.0/8 and the IPv6 range FF3x::/32.