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Cisco Bug: CSCtc09940 - A few mcast packets dropped when (S,G) entry is created

Last Modified

Feb 12, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)


Some multicasts packets dropped during a few milliseconds.


- CRS-1 running PIM Sparse-Mode 
- CRS-1 is already forwarding multicast packets through the shared tree (*,G) entry.
- Downstream router joins the source tree.
- A few packets may be dropped by the CRS-1 when it installs the (S,G) entry and starts forwarding through it.
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