mofrr-asm-starg (Multicast-Only Fast Reroute in a PIM Domain)
Syntax
mofrr-asm-starg;
Hierarchy Level
[edit logical-systems logical-system-name routing-instances routing-instance-name routing-options multicast stream-protection], [edit logical-systems logical-system-name routing-options multicast stream-protection], [edit routing-instances routing-instance-name routing-options multicast stream-protection], [edit routing-options multicast stream-protection]
Description
Enable mofrr-asm-starg to include any-source multicast
(ASM) for (*,G) joins in the Multicast-only fast reroute (MoFRR).
mofrr-asm-starg applies to IP-PIM only. When
enabled for group G, *,G will undergo MoFRR as long as there is no
S#,G for Group G. In other words, *,G MoFRR will cease and any old
states will be torn down when S#,G is created. Note too, that mofrr-asm-starg is not supported for mLDP (since mLDP itself
does not support *,G).
In a PIM domain with MoFRR enabled, the default for stream-protection is S,G routes only.
Context: Multicast-only fast reroute (MoFRR) can be used to reduce traffic loss in a multicast distribution tree in the event of link down. To employ MoFRR, a downstream router is configured with an alternative path back towards the source, over which it receives a backup live stream of the same multicast traffic. That router propagates the same (S,G) join toward both upstream neighbors in order to create duplicate multicast trees. If a failure is detected on the primary tree, the router switches to the backup tree to prevent packet loss.
Required Privilege Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
Release Information
Statement introduced in Junos OS Release 14.1.