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Cisco Bug: CSCvs32425 - The "ip igmp static-oif" command can take effect on the PIM DR and non-DR interfaces (SVI)

Last Modified

Nov 04, 2020

Products (2)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9000 Series Switches

Known Affected Releases

7.0(3)I7(7) 9.3(1)

Description (partial)

Symptom:
Duplicated multicast trafic is observed when two Nexus 9000 are PIM neighbors and have  static-oif configured on both side for the same interface Vlan.
Both Nexus 9000 (DR and non-DR interfaces) will have the static OIF for SVI and it causes the duplicate multicast traffic due to two valid OIFs.

Conditions:
Two Nexus 9000 as PIM neighbors (no vPC) connected using L3 link.
Interface Vlan with "ip igmp static-oif x.x.x.x" configured on on both of the Nexus 9000. 
PIM SSM specific to 239.xxx.xxx.xxx multicast group
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