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Protocol Independent Multicast - Sparse Mode (PIM-SM or PIM) enables RouterOS to support multicast streaming over the network area. Several configured PIM routers together will make a multicast cloud where client devices can use IGMP to manage stream subscriptions to the streams. PIM should be used when the network topology is complex or stream sources are connected to a multicast cloud. Continuous cloud must have configured a unique rendezvous point for multicast groups and other participants should know how to reach the rendezvous point. In a simple case where on the part of the network only potential clients may reside and there are no stream sources, then IGMP proxy can be used instead to preserve resources.
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Property | Description |
|---|---|
| afi (ipv4 | ipv6; Default: ipv4) | Specifies address family for PIM. |
| bsm-forward-back (yes | no; Default: ) | Currently not implemented. |
| crp-advertise-contained (yes | no; Default: ) | Currently not implemented. |
| name (text; Default: ) | Name of the instance. |
| rp-hash-mask-length (integer: 0..4294967295; Default: 30 (IPv4), or 126 (IPv6)) | The hash mask allows changing how many groups to map to one of the matching RPs. |
| rp-static-override (yes | no; Default: no) | Changes the selection priority for static RP. When disabled, the bootstrap RP set has a higher priority. When enabled, static RP has a higher priority. |
| ssm-range (IPv4 | IPv6; Default: ) | Currently not implemented. |
| switch-to-spt (yes | no; Default: yes) | Whether to switch to Shortest Path Tree (SPT) if multicast data bandwidth threshold is reached. The router will not proceed from protocol phase one (register encapsulation) to native multicast traffic flow if this option is disabled. It is recommended to enable this option. |
| switch-to-spt-bytes (integer: 0..4294967295; Default: 0) | Multicast data bandwidth threshold. Switching to Shortest Path Tree (SPT) happens if this threshold is reached in the specified time interval. If a value of 0 is configured, switching will happen immediately. |
| switch-to-spt-interval (time; Default:) | Time interval in which to account for multicast data bandwidth, used in conjunction with switch-to-spt-bytes to determine if the switching threshold is reached. |
| vrf (name; Default: main) | Name of the VRF. |
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Property | Description |
|---|---|
| hello-delay (time; Default: 5s) | Randomized interval for the initial Hello message on interface startup or detecting new neighbor. |
| hello-period (time; Default: 30s) | Periodic interval for Hello messages. |
| instance (name; Default: ) | Name of the PIM instance this interface template belongs to. |
| interfaces (name; Default: all) | List of interfaces that will participate in PIM. |
| join-prune-period (time; Default: 1m) | |
| join-tracking-support (yes | no; Default: yes) | Sets the value of a Tracking (T) bit in the LAN Prune Delay option in the Hello message. When enabled, a router advertises its willingness to disable Join suppression. it is possible for upstream routers to explicitly track the join membership of individual downstream routers if Join suppression is disabled. Unless all PIM routers on a link negotiate this capability, explicit tracking and the disabling of the Join suppression mechanism are not possible. |
| override-interval (time; Default: 2s500ms) | Sets the maximum time period over which to randomize when scheduling a delayed override Join message on a network that has join suppression enabled. |
| priority (integer: 0..4294967295; Default: 1) | The Designated Router (DR) priority. A single Designated Router is elected on each network. The priority is used only if all neighbors have advertised a priority option. Numerically largest priority is preferred. In case of a tie or if priority is not used - the numerically largest IP address is preferred. |
| propagation-delay (time; Default: 500ms) | Sets the value for a prune pending timer. It is used by upstream routers to figure out how long they should wait for a Join override message before pruning an interface that has join suppression enabled. |
| source-addresses (IPv4 | IPv6; Default: ) |
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Property | Description |
|---|---|
| address (IP%interface) | Shows the neighbor's IP address and local interface the neighbor is detected on. |
| designated-router (yes | no) | Shows whether the neighbor is elected as Designated Router (DR). |
| instance (name) | Name of the PIM instance this neighbor is detected on. |
| join-tracking (yes | no) | Indicates the neighbor's value of a Tracking (T) bit in the LAN Prune Delay option in the Hello message. |
| override-interval (time) | Indicates the neighbor's value of the override interval in the LAN Prune Delay option in the Hello message. |
| priority (integer: 0..4294967295) | Indicates the neighbor's priority value. |
| propagation-delay (time) | Indicates the neighbor's value of the propagation delay in the LAN Prune Delay option in the Hello message. |
| timeout (time) | Shows the reminding time after the neighbor is removed from the list if no new Hello message is received. The hold time equals to neighbor's hello-period * 3.5. |
Static RP
The static-rp menu allows manually defining the multicast group to RP mappings. Such a mechanism is not robust to failures but does at least provide a basic interoperability mechanism.
Sub-menu:/routing pimsm static-rp
Property | Description |
|---|---|
| address (IPv4 | IPv6; Default: ) | The IP address of the static RP. |
| group (IPv4 | IPv6; Default: 224.0.0.0/4) | The multicast group that belongs to a specific RP. |
| instance (name; Default: ) | Name of the PIM instance this static RP belongs to. |
/routing/pimsm/bsr
/routing/pimsm/bsr/candidate
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