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Cisco Bug: CSCul44174 - ffm memory increase during rapid mroute flapping or sparse mode w/o RP

Last Modified

Apr 22, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

15.1(2)SG3.0.19 15.1(2.1)SG

Description (partial)

The symptom is that 'ffm' progressively takes up more memory & the free memory depletes by roughly the same amount.

Issue is triggered by one of the following:
- a consistent rapid flapping of mroute(s)
- constant traffic toward a group on a vlan where the SVI has PIM sparse mode configured, but an RP is not permitted for the group
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